DolpHin Series Models PH10 and ORP10 Electrochemical Sensors and Accessories for pH and ORP Measurements

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DolpHin Series Models PH10 and ORP10 Electrochemical Sensors and Accessories for pH and ORP Measurements
Product Specifications                                                                          PSS 6-1C3 A
DolpHin™ Series
Models PH10 and ORP10 Electrochemical Sensors and
Accessories for pH and ORP Measurements

The DolpHin Series are precision electrochemical sensors used in conjunction with a widely accepted set of
mounting accessories to measure pH and ORP. They are rugged, easy-to-use devices that are particularly well
suited for use in high temperature installations.

INTRODUCTION
The DolpHin Series are a family of high performance      high temperature electrolyte, reference electrode with
pH and ORP sensors with extensive features and           Nafion ion barrier, ultra fast automatic temperature
accessories.                                             compensation, and a single rugged body that fits the
Breakthrough performance in stability, accuracy, and     widest variety of mounting accessories. The elegant
long life makes DolpHin the premier pH and ORP           DolpHin design delivers an easy-to-use sensor with
sensor for on-line process applications.                 unmatched pH and ORP measurement performance.

Laboratory testing and extensive field trials have       FEATURE HIGHLIGHTS
proven DolpHin’s superior performance. It outlasts         • Unique pH glass - exceptionally stable, remains
other sensors in high temperature and temperature            fast and accurate after severe temperature
cycling applications up to 121°C (250°F). It remains         cycling (121°C/250°F)
fast and accurate, while conventional pH sensors lose
                                                           • Proven high stability, high accuracy, and long life
sensitivity and are slow to respond to pH changes.
Foxboro engineers have formulated a unique pH              • Easy-to-use body design simplifies installation,
glass (patent pending) which makes DolpHin                   calibration, maintenance, and replacement
exceptionally stable, accurate, and long lasting, even     • More reliable measurements permit tighter
in the harshest process applications.                        process control
Each component in the DolpHin sensor has been              • Longer life plus easy mounting reduces
designed to maximize ease-of-use, long life, and             maintenance costs
accuracy, including: the precision reference junction,
DolpHin Series Models PH10 and ORP10 Electrochemical Sensors and Accessories for pH and ORP Measurements
PSS 6-1C3 A
Page 2

GENERAL DESCRIPTION                                                     SENSOR BODY
The DolpHin Series consists of Model PH10 for pH                        The sensor is offered in a PVDF(1) body material.
measurements and Model ORP10 for ORP                                    PVDF is an ideal material because of its excellent
measurements. These models share many of the                            pressure, temperature, and mechanical properties. It
same characteristics, such as body type, internal                       is virtually immune to attack from most chemical
reference electrode, temperature elements, cables,                      solutions.
options, and accessories.                                               The sensor body has a single, sealed probe design,
The difference between the two models is in the                         with no replaceable parts, making it a low
measuring electrode. Model PH10 offers four pH                          maintenance sensor.
electrode choices, and Model ORP10 offers two ORP                       The glass electrode pH models contain no process
electrode choices. Each of these electrode types is                     wetted metal.
discussed in the Model Code Selection Guide
section.                                                                The body has two integral 3/4 NPT mounting threads;
                                                                        one at the cable end for submersion or ball valve
The commonality of body type allows users to                            insertion mounting, the other near the sensing end for
standardize on DolpHin pH and ORP sensors while                         in-line mounting.
enjoying the flexibility to install them in any way
appropriate for the application. Every DolpHin sensor                   In the upper body of the sensor, there are two
fits with any of the ball valve insertion assemblies,                   grooves, used to adapt to the Universal mounting
bushings, tees, and other accessories shown in this                     adapters shown in the Accessories section. The
document.                                                               Universal Adapter set provides an easy means for
                                                                        installing, removing, and replacing the sensor.
DolpHin sensors are easy to use; specifically, easy to
install, replace, calibrate, and maintain. The                          TYPICAL pH AND ATC RESPONSE
“disposable” design means low cost of maintenance,                      The following test data is typical of DolpHin
and elimination of internal spare parts inventories.                    performance and relative to premium process pH
The sensor is mechanically rugged, chemically and                       sensors supplied by other manufacturers.
thermally resistant, and can withstand extended
                                                                        Slope % is a measure of the accuracy and sensitivity
exposure to high temperature applications, thereby
                                                                        of a pH sensor. Slope % is the difference, in mV, of a
making it ideally suited for the harshest industrial
                                                                        sensor’s output in two different pH buffers as
applications.
                                                                        compared to the expected or ideal mV difference
TRANSMITTER/ANALYZER COMPATIBILITY                                      between the same two buffers. Sensors are typically
DolpHin sensors are fully compatible with Foxboro                       100% of expected value when new, and the slope %
Model 870ITPH Intelligent Transmitters and Model                        deteriorates as the sensor ages; 80% is frequently
875PH Intelligent Analyzers.                                            used as the low limit acceptable for a process
                                                                        application. High temperature and temperature cycles
When used with the Foxboro Intelligent devices,                         cause pH sensitive glass to lose sensitivity more
DolpHin supports sensor diagnostics, including:                         rapidly. The two significant effects that a pH user sees
   •   Broken glass electrode                                           is loss of Slope % and slowing of the response to pH.
   •   Coating of sensing surface                                       The superiority of the DolpHin high temperature
   •   Aging (slope degradation)                                        electrode is clearly demonstrated in Figures 1, 2,
   •   Liquid leakage into sensor body                                  and 3.
   •   Preamp failure
   •   ATC, temperature element failure.                                Accurate pH measurement is also affected by the
                                                                        sensor’s ability to provide fast, accurate temperature
The coating and aging diagnostics are useful in                         measurement for temperature compensation. The
scheduling preventive maintenance. And all the                          DolpHin sensor includes a temperature element that
diagnostics are useful in ensuring a reliable pH or                     has been optimized for speed of response, and it is in
ORP measurement. DolpHin sensors are also                               close thermal contact with the process liquid, as well
compatible with older models 873PH and 873DPX                           as the pH and reference electrodes. DolpHin
analyzers, although with a restriction on temperature                   superiority for both the standard temperature element
elements (see Model Code Selection Guide).                              and the ultra fast enhanced element is shown in
Analyzer 873APH is compatible with DolpHin Model                        Figure 4.
PH10 with glass electrodes and 100 Ω temperature
elements only.

(1) PVDF is polyvinylidene fluoride, commercially available as Kynar.
DolpHin Series Models PH10 and ORP10 Electrochemical Sensors and Accessories for pH and ORP Measurements
PSS 6-1C3 A
                                                                                                Page 3

                                        % SLOPE DEGRADATION OVER TIME WHILE
                                      SUBJECTED TO TEMPERATURE CYCLES OF 100˚C
                100

                 90
     % SLOPE

                 80
                            = DolpHin
                 70         = SUPPLIER "A"
                            = SUPPLIER "B"
                 60

                 50
                      0          5      6          10    12       15 16          20   22   25
                                                 NUMBER OF DAYS AT 100˚C

                                        Figure 1. pH Response, Aging, 100°C

                                               pH RESPONSE TIME
                                 AFTER EXPOSURE TO TEMPERATURE CYCLES OF 100˚C
                360

                320

                280       = DolpHin
TIME, SECONDS

                          = SUPPLIER "A"
                240
                          = SUPPLIER "B"
                200

                160

                120

                 80

                 40

                  0
                      0           5     6          10    12       15 16          20   22   25
                                                 NUMBER OF DAYS AT 100˚C

                                        Figure 2. pH Response Time, 100°C
DolpHin Series Models PH10 and ORP10 Electrochemical Sensors and Accessories for pH and ORP Measurements
PSS 6-1C3 A
Page 4

                                     ELECTROMETRIC SPEED OF                                                  ATC - TEMPERATURE RESPONSE TIME
                                 RESPONSE AFTER 120 HOURS AT 121˚C                                                      25˚C TO 100˚C
                      +500                                                             100

                      +400                                                                    90

                                        X                                                     80
                      +300
                                                                                                                                                      X
                                                                                              70
  MEASUREMENT IN mV

                                       X

                                                                            TEMPERATURE, ˚C
                                            X                                                                                                X
                      +200                       X                      X

                                                                                              60                                     X
                                                                                                                                X
                      +100
                                                                                              50
                                                                                                                          X
                      0.00                                                                    40
                                                      = DolpHin                                                                = DolpHin - Standard
                             X     X                  = SUPPLIER "A"                                                           = DolpHin - Enhanced
                      -100                                                                    30                                           Speed
                                                      = SUPPLIER "B"
                                                     X = SUPPLIER "C"                                                          = SUPPLIER "A"
                                                                                              20
                                                                                                                               = SUPPLIER "B"
                      -200
                                                                                                                              X = SUPPLIER "C"
                                                                                              10
                      -300
                                    0       1    2    3    4      5     6                     0
                                                TIME, MINUTES                                      -2   -1      0    1     2    3        4       5    6
                                                                                                                     TIME, MINUTES
                         Figure 3. pH Response Time, 121°C                  Figure 4. Temperature Response Time, 25° to 100°C
DolpHin Series Models PH10 and ORP10 Electrochemical Sensors and Accessories for pH and ORP Measurements
PSS 6-1C3 A
                                                                                                              Page 5

AUTOMATIC TEMPERATURE COMPENSATION                              minimizing poisoning of the electrode and preventing
ATC, utilizing a resistance temperature detector                silver ion from migrating to the external junction and
(RTD), is a built-in feature in all DolpHin Sensors.            causing clogging.
Either 2- or 3-wire, 100 or 1000 Ω platinum RTDs, or
                                                                EASE OF USE
a Balco 2-wire, 3 kΩ RTD may be selected. These
RTDs are available with an enhanced response                    Experienced pH users know that sensor maintenance
speed. Refer to Model Code Selection Guide section.             can be time-consuming and costly. DolpHin Series
                                                                sensors provide extended service life, thus reducing
INTERNAL PREAMPLIFIER                                           the number of maintenance calls. However, the
The sensor is offered with or without an internal               sensor occasionally requires removal from process
preamplifier. The preamplifier converts the high                for calibration, possibly cleaning, and eventually
impedance pH signal to a low impedance signal,                  replacement.
which is less prone to interference. With the internal          DolpHin features and accessories are set up to make
preamplifier, the 15.2 m (50 ft) transmission distance          sensor maintenance quick and easy. The Variopin
can be extended to 152 m (500 ft) as shown in the               quick cable connector allows the sensor to be easily
“PHYSICAL SPECIFICATIONS” section. Refer also to                disconnected from the cable.
Model Code Selection Guide section.                             The sensor may be mounted in many different ways.
PRECISION DOUBLE JUNCTION REFERENCE                             Typical mounting configurations are listed below and
ELECTRODE                                                       shown in Figure 5:
The external, process wetted reference junction is                •   In situ with 3/4 NPT Mounting
ceramic material with ultra fine porosity and small               •   With a Universal Bushing Assembly
surface area. This style junction provides minimum                •   Universal Tri-Clamp Connection Assembly
variability of junction potential which contributes to            •   In Sample Line via a Flow Chamber
noise and drift problems typically seen in junctions              •   In Sample Line via a Tee Kit and Bushings
with large surface area.                                          •   In line via a Variable Insertion Assembly
                                                                  •   In line via a Ball Valve Assembly with Purge Ports
Internal electrolyte is a high temperature gel that
resists poisoning.                                              The sensors’ process connections are also backward
                                                                compatible with most existing Foxboro and other
The reference electrode is a silver/silver chloride half
                                                                sensors presently in the field.
cell. The reference electrode is encased in a Nafion
ion barrier which allows charge transfer while

       BASIC       UNIVERSAL      UNIVERSAL        IN SAMPLE          IN SAMPLE      IN LINE VIA     IN LINE VIA
      SENSOR        BUSHING,      TRI-CLAMP          LINE VIA          LINE VIA      A VARIABLE     A BALL VALVE
      3/4 NPT     ADJUSTABLE     CONNECTION          A FLOW            A TEE KIT     INSERTION     ASSEMBLY WITH
                     1 NPT        ASSEMBLY          CHAMBER                           ASSEMBLY      PURGE PORTS
                                 Figure 5. Typical Sensor Mounting Configurations
DolpHin Series Models PH10 and ORP10 Electrochemical Sensors and Accessories for pH and ORP Measurements
PSS 6-1C3 A
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                                                           MODEL CODES

 Model Code – pH Sensor
 Description                                                                                                                  Model
 DolpHin pH Sensor                                                                                                            PH10

 pH Electrode Type
 Domed, High Temperature, Glass Bulb with Protective Guard                                                                       -1
 Domed, High Temperature, Glass Bulb without Protective Guard                                                                    -2
 Flat Ruggedized Glass                                                                                                           -3
 Antimony                                                                                                                        -4

 Preamplifier
 None                                                                                                                            N
 Internal Preamplifier (a)(b)                                                                                                    P

 Temperature Compensation
 2-Wire, 100 Ω Platinum RTD                                                                                                      1
 3-Wire, 1000 Ω Platinum RTD (b)                                                                                                 2
 2-Wire, 100 Ω Platinum RTD, Enhanced Response Speed                                                                             3
 3-Wire, 1000 Ω Platinum RTD, Enhanced Response Speed (b)                                                                        4
 2-Wire, 3 kΩ Balco RTD (f)                                                                                                      5

 Sensor Termination
 10 ft (3.05 m) Integral Cable Terminated with Crimped-on Straight Pin Lugs                                                      A
 10 ft (3.05 m) Integral Cable Terminated with Variopin Quick Connector (b)(c)                                                   B
 Variopin Quick Connector Integral to Sensor (b)(c)                                                                              Q

 Optional Selections
 EPDM(1) O-Rings (d)                                                                                                             -E
 Chemraz(2) O-Rings (d)                                                                                                          -C
 Integral Std. Temp Sensor Cable, 20 ft (6.1 m) long (e)                                                                         -2
 Integral Std. Temp Sensor Cable, 30 ft (9.1 m) long (e)                                                                         -3
 Integral Std. Temp Sensor Cable, 40 ft (12.2 m) long (e)                                                                        -4
 Integral Std. Temp Sensor Cable, 50 ft (15.2 m) long (e)                                                                        -5
 Integral High Temp Sensor Cable, 10 ft (3.05 m) long (a)(e)                                                                    -1H
 Integral High Temp Sensor Cable, 20 ft (6.1 m) long (a)(e)                                                                     -2H
 Integral High Temp Sensor Cable, 30 ft (9.1 m) long (a)(e)                                                                     -3H
 Integral High Temp Sensor Cable, 40 ft (12.2 m) long (a)(e)                                                                    -4H
 Integral High Temp Sensor Cable, 50 ft (15.2 m) long (a)(e)                                                                    -5H

 Examples: PH10-1N3B-E2H
 (a) High Temperature cable not available with Preamplifier Code “P”.
 (b) Selection of Preamp (“P”), with 3-wire RTD (“2” or “4”) and with Variopin Quick Connector (“B” or “Q”) may not be made at the
     same time. Any two are allowed together, but not all three.
 (c) Requires mating patch cord with integral Variopin Quick Connector, if not customer supplied.
 (d) Standard O-ring material is Viton.
 (e) Cable options applicable to Sensor Termination Codes “A” and “B” only.
 (f) Contact Foxboro for availability.

(1) EPDM is Ethylene-Propylene Terpolymer, also known as EPR (Ethylene-Propylene Rubber).
(2) Chemraz is a Perfluoroelastomer.
DolpHin Series Models PH10 and ORP10 Electrochemical Sensors and Accessories for pH and ORP Measurements
PSS 6-1C3 A
                                                                                                                             Page 7

Model Code – ORP Sensor
Description                                                                                                                Model
DolpHin ORP Sensor                                                                                                        ORP10

ORP Electrode Type
Platinum                                                                                                                      -1
Gold                                                                                                                          -2

Preamplifier
None                                                                                                                          N
Internal Preamplifier (a)(b)                                                                                                  P

Temperature Compensation
2-Wire, 100 Ω Platinum RTD                                                                                                    1
3-Wire, 1000 Ω Platinum RTD (b)                                                                                               2
2-Wire, 100 Ω Platinum RTD, Enhanced Response Speed                                                                           3
3-Wire, 1000 Ω Platinum RTD, Enhanced Response Speed (b)                                                                      4
2-Wire, 3 kΩ Balco RTD (f)                                                                                                    5

Sensor Termination
10 ft (3.05 m) Integral Cable Terminated with Crimped-on Straight Pin Lugs                                                    A
10 ft (3.05 m) Integral Cable Terminated with Variopin Quick Connector (b)(c)                                                 B
Variopin Quick Connector Integral to Sensor (b)(c)                                                                            Q

Optional Selections
EPDM O-Rings (d)                                                                                                              -E
Chemraz O-Rings (d)                                                                                                           -C
Integral Std. Temp Sensor Cable, 20 ft (6.1 m) long (e)                                                                       -2
Integral Std. Temp Sensor Cable, 30 ft (9.1 m) long (e)                                                                       -3
Integral Std. Temp Sensor Cable, 40 ft (12.2 m) long (e)                                                                      -4
Integral Std. Temp Sensor Cable, 50 ft (15.2 m) long (e)                                                                      -5
Integral High Temp Sensor Cable, 10 ft (3.05 m) long (a)(e)                                                                  -1H
Integral High Temp Sensor Cable, 20 ft (6.1 m) long (a)(e)                                                                   -2H
Integral High Temp Sensor Cable, 30 ft (9.1 m) long (a)(e)                                                                   -3H
Integral High Temp Sensor Cable, 40 ft (12.2 m) long (a)(e)                                                                  -4H
Integral High Temp Sensor Cable, 50 ft (15.2 m) long (a)(e)                                                                  -5H

Examples: ORP10-1P4A-C5
(a) High Temperature cable not available with Preamplifier Code “P”.
(b) Selection of Preamp (“P”), with 3-wire RTD (“2” or “4”) and with Variopin Quick Connector (“B” or “Q”) may not be made at the
    same time. Any two are allowed together, but not all three.
(c) Requires mating patch cord with integral Variopin Quick Connector, if not customer supplied.
(d) Standard O-ring material is Viton.
(e) Cable options applicable to Sensor Termination Codes “A” and “B” only.
(f) Contact Foxboro for availability.
DolpHin Series Models PH10 and ORP10 Electrochemical Sensors and Accessories for pH and ORP Measurements
PSS 6-1C3 A
Page 8

                                      MODEL CODE SELECTION GUIDE

PH10 ELECTRODE TYPE SELECTIONS                           PH10-3 Electrode – Flat Ruggedized Glass
PH10-1 Electrode – Domed Glass Bulb with                 Completely flat, smooth sensing surface. This glass
Protective Guard                                         electrode is designed for overall ruggedness and is
 Unique pH glass formulation provides full 0 to14 pH     especially well suited for applications with solids that
 range and high temperature operation up to              coat or wear on the electrode. The smooth sensing
 121°C/250°F. Fast and accurate pH response              surface tends to be self-cleaning by the action of the
 suitable for severe temperature and harsh chemical      process flow. This design is also well suited to
 applications. Low sodium ion error. Suitable for low    minimize breakage due to handling. This electrode
 conductivity water down to 10 µS/cm. Built-in pvdf      selection is best suited for applications in the
 guard protects bulb from breakage while in service      2 to 12 pH range with temperatures less than 85°C
 and while handling during installation and              (185°F). See Figure 8.
 maintenance. See Figure 6.

                                                          Figure 8. PH10-3 Electrode, Flat Ruggedized Glass
      Figure 6. PH10-1 Electrode, Domed Bulb             PH10-4 Electrode – Antimony
                with Protective Guard                    Metallic antimony electrode is available for
PH10-2 Electrode – Domed Glass Bulb without              applications containing hydrofluoric acid (HF). The
Protective Guard                                         pH range for an application is best when kept within
                                                         the 1 to 10 pH range. Antimony should not be used in
This selection provides the same glass bulb and pH
                                                         food and beverage, potable water, acid copper
performance as selection “1” above, but without the
                                                         solutions, strong oxidizers/ reducers such as
protective pvdf guard. This selection should be made
                                                         chromates, chlorine, hypochlorites, or sulfides.
when the application requires full pH range or high
temperature operation and the process stream
contains a high level of solid material that might
otherwise get caught on the protective guard. The
user must exercise greater caution while handling this
electrode type during installation and maintenance.
See Figure 7.

      Figure 7. PH10-2 Electrode, Domed Bulb
              without Protective Guard
DolpHin Series Models PH10 and ORP10 Electrochemical Sensors and Accessories for pH and ORP Measurements
PSS 6-1C3 A
                                                                                                        Page 9

ORP10 ELECTRODE TYPE SELECTIONS                           Preamplifier Selection “P”
                                                           This selection provides an integral preamplifier
ORPI0-1 Electrode – Platinum Electrode
                                                           located in the upper body of the DolpHin sensor. The
 Platinum is the default selection for most ORP
                                                           preamp is highly recommended when any one of the
 applications. Large surface area, high purity
                                                           glass pH electrodes is selected. The preamp
 platinum provides full mV ORP range, and high
                                                           provides unity gain and conversion to low
 temperature up to 121°C (250°F). See Figure 9.
                                                           impedance of the high impedance mV signal of the
                                                           glass pH electrode. The preamp provides signal
                                                           integrity in electrically noisy environments, in
                                                           installations where the sensor cable may be moving,
                                                           and through sensor cable connections to an
                                                           extension cable. A preamp is required when the
                                                           distance from the sensor to the transmitter exceeds
                                                           15.2 m (50 ft).

                                                           The preamp should not be selected when the upper
                                                           half of the sensor body is submerged in process
                                                           solutions above 85°C (185°F). The preamp,
                                                           however, may be selected (and is recommended) in
                                                           all applications where the sensor is mounted such
                                                           that only the sensing end or lower half of the sensor
        Figure 9. ORP10 Platinum Electrode                 is exposed to process temperature; for example, in
                                                           the universal bushing accessory.
ORPI0-2 Electrode – Gold Electrode
 The gold ORP electrode is similar in size, shape,                                NOTE
 and purity as the platinum ORP electrode. Gold               Optional selections “-1H” to “-5H” for high
 provides an alternative electrode choice for those           temperature cable are not available when the
 rare applications where platinum is not well suited;         preamp is selected.
 for example, cyanide reduction systems.
                                                          TEMPERATURE COMPENSATION SELECTIONS
PREAMPLIFIER SELECTIONS                                    DolpHin pH and ORP sensors include a precision
                                                           temperature measuring element. Foxboro analyzers
Preamplifier Selection “N”
                                                           and transmitters use this temperature measurement
 This option allows for no integral preamplifier in the
                                                           to provide automatic temperature compensation of
 sensor. Select “N” in applications where the entire
                                                           pH measurements. ORP measurements do not
 sensor body is exposed to process temperatures
                                                           require compensation. The temperature measure-
 above 85°C (185°F), up to 121°C (250°F), such as
                                                           ment element is included in ORP10 models for
 submersion tank installation or hot tap/ball valve
                                                           process temperature indication, and in PH10 models
 installations. The temperature limit of the preamp is
                                                           for both process temperature indication and ATC.
 85°C (185°F) and it resides inside the upper portion
 of the sensor.                                            DolpHin sensor design provides superior
                       NOTE                                temperature compensation. The precision RTD is
    It is recommended that the optional high               located in the tip of the sensor in close thermal
    temperature cable be specified in high                 contact with the pH electrode, the reference
    temperature submersion applications.                   electrode, and the process liquid. Highly effective
                                                           temperature compensation is achieved because the
 Also select “N” when planning to use the DolpHin          actual temperature of the electrodes is measured.
 sensor with a non Foxboro made transmitter or
 analyzer. Power and wiring of the preamplifier is one    Temp. Comp. Selection “1” – 2-Wire 100 Ω
 area where sensor and transmitters may be                Platinum RTD
 incompatible when mixing equipment from different         This selection is the most widely applicable. Many
 manufacturers.                                            non Foxboro analyzers and all Foxboro
                                                           analyzers/transmitters accept this RTD. Foxboro
                                                           analyzers in the 873 family require this selection or
                                                           the “3” selection below. The platinum 100 Ω, 2-wire
                                                           RTD is suitable for most routine process
                                                           applications.
DolpHin Series Models PH10 and ORP10 Electrochemical Sensors and Accessories for pH and ORP Measurements
PSS 6-1C3 A
Page 10

                                   MODEL CODE SELECTION GUIDE (Cont.)

Temp. Comp. Selection “2” – 3-Wire 1000 Ω                                          NOTE
Platinum RTD                                                  This selection is not available when a
 This selection should be made when high pH                   preamplifier and a Variopin quick connector
 accuracy is required. A 3-wire RTD compensates for           are both selected in the same sensor model
 the error due to cable length and junction box               code.
 connections, thus providing more accurate
 temperature compensation.                                SENSOR TERMINATION SELECTIONS

                         NOTE                             Sensor Termination Selection “A” – 3.05 m (10 ft)
    This selection is not available when a                Integral Cable with Pin Lugs
    preamplifier and a Variopin quick connector             The sensor cable is an integral part of the sensor.
    are both selected in the same sensor model              This selection is best suited for installations such as
    code.                                                   submersion, hot tap ball valve insertion, or in-line
                                                            with universal bushing mount.
Temp. Comp. Selection “3” – 2-Wire 100 Ω
Platinum RTD, Enhanced Response Speed                     Sensor Termination Selection “B” – 3.05 m (10 ft)
 Make this selection in critical pH applications or       Integral Cable with Variopin Quick Connector
 when process temperature changes rapidly and               This selection is best suited for a submersion type
 when using an 873PH Analyzer. Also make this               installation where integral cable is desired and a
 selection when fast temperature response is                long patch cord is also required. The Variopin quick
 required along with Variopin quick connector and           connector provides IP67 rating with easy
 preamplifier are all required.                             disconnect/reconnect capability. Requires mating
                                                            patch cable of appropriate length for application. The
 This RTD housing protrudes slightly (0.17 in) from         mating patch cable does not need replacement
 the sensing tip of DolpHin, providing greater thermal      when the sensor is replaced. Also, the transmitter or
 contact with the process. This selection is similar to     analyzer remains closed and does not need rewiring
 selection “1”, but with ultra fast temperature             during sensor replacement. This selection is not
 response. Refer to Figures 4 and 10.                       suitable for use in hot tap or ball valve type insertion
                           RTD                              assembly installations.
                         HOUSING
                                                          Sensor Termination Selection “Q” – Variopin
                                                          Quick Connector Integral to Sensor
                                                           Similar to selection “B” but without cable integral to
                                                           the sensor. This selection provides easy sensor
                                                           replacement without running new cable and rewiring
                                                           transmitter/analyzer. Prevents cable wind-up
                                                           problem. Requires mating patch cable of appropriate
         Figure 10. Platinum RTD Housing –
                                                           length. Variopin quick connector cuts maintenance
            Enhanced Response Speed
                                                           costs, reduces time required for sensor replacement.
Temp. Comp. Selection “4” – 3-Wire 1000 Ω                  This selection is suitable for all sensor mounting
Platinum RTD, Enhanced Response Speed                      styles, including DolpHin Series ball valve/insertion
 This selection provides the optimum accuracy and          assemblies. See Figure 11.
 speed of response for temperature indication and pH
 temperature compensation. Make this selection for
 the most critical pH application when using 870ITPH
 Transmitter or 875PH Analyzer. This selection is
 similar to selection “2” for RTD accuracy and similar
 to selection “3” for temperature speed of response.

 Temperature Compensation Selection “4” may also                   Figure 11. Variopin Quick Connector
 be used for applications requiring the flat glass                          Integral to Sensor
 electrode, but consideration should be made for the
 slight protrusion of the RTD housing on the flat
 surface.
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                                                                                                                              Page 11

OPTIONAL SELECTIONS                                                     Optional Selections “-1H”, “-2H”, “-3H”, “-4H”,
                                                                        “-5H” – High Temperature Sensor Cable
Optional Selections “-E” and “-C”
                                                                          High temperature cable is rated to 125°C (257°F).
 Viton O-rings are standard. EPDM (“-E”) or Chemraz
                                                                          This cable is used in applications where the entire
 (“-C”) O-ring materials are available as options.
                                                                          sensor body and some portion of the sensor cable
 O-rings are process wetted and should be selected
                                                                          are exposed to process temperatures above the
 based on chemical compatibility with process
                                                                          standard cable specification of 85°C (185°F).
 materials and temperatures.
                                                                          Installations such as ball valve insertion assembly, or
Optional Selections “-2”, “-3”, “-4”, “-5” –
                                                                          submersion mounting, expose the cable to process
Extended Length Integral Cable
                                                                          temperature. In these cases, optional high
 Extended length integral cable is available in 3.05 m
                                                                          temperature cables should be considered. It is
 (10 ft) increments up to 15.2 m (50 ft) maximum. For
                                                                          appropriate for cost purposes to use high
 applications that require the transmitter and sensor
                                                                          temperature cable from the sensor running out of the
 to be separated by greater than 15.2 m (50 ft), use of
                                                                          hot zone to a cooler area where a junction box or
 the standard length cable with junction box is
                                                                          Variopin connection is made to a lower cost,
 recommended, and an extension cable up to a
                                                                          standard temperature extension cable. This
 maximum of 152 m (500 ft) between sensor and
                                                                          approach is especially cost effective if the
 transmitter. Also, for lengths greater than 15.2 m
                                                                          application demands frequent sensor replacement.
 (50 ft), the preamp selection “P” must be made. See
 Figures 12 and 13.

                           OPERATING, STORAGE, AND TRANSPORTATION CONDITIONS
                         Reference Operating               Normal Operating Condition                Storage and Transportation
    Influence                Conditions                             Limits                                     Limits
Process Temp.               25 ±3°C (77 ±5°F)                      See Table 1           -5 and +65°C (-23 and +149°F)
Process Press.            0 kPa gauge (0 psig)            0 and 700 kPa (0 and 100 psig)         Not Applicable
Mounting                        Vertical;                        Vertical up to ±90°;                         Not Applicable
Position               with Electrode End Down             with Electrode End Downward

                                             Table 1. Process Temperature Ratings
                                                                                        With Internal Preamp
     Measuring                                                    Ball Valve or Submersion                          In-Line
   Electrode Type            Without Internal Preamp.                     Installation                          Installation (a)
 Domed Glass - pH             0 to 121°C (32 to 250°F)               0 to 85°C    (32 to 185°F)           0 to 121°C (32 to 250°F)
 Flat Glass - pH               0 to 85°C (32 to 185°F)               0 to 85°C    (32 to 185°F)           0 to 85°C (32 to 185°F)
 Antimony - pH                0 to 121°C (32 to 250°F)               0 to 85°C    (32 to 185°F)           0 to 121°C (32 to 250°F)
 Platinum - ORP               0 to 121°C (32 to 250°F)               0 to 85°C    (32 to 185°F)           0 to 121°C (32 to 250°F)
 Gold - ORP                   0 to 121°C (32 to 250°F)               0 to 85°C    (32 to 185°F)           0 to 121°C (32 to 250°F)
(a) For in-line installations of a DolpHin sensor with internal preamp, the upper body must be in ambient temperatures of 54°C (130°F)
    or less.

                            PROCESS PRESSURE AND TEMPERATURE SPECIFICATIONS
                                                       NOTE
     The process temperature ratings of the sensor assembly are given in Table 1. In the table, in-line
     installation means that only the sensing end, not the sensor body, is immersed in the solution.
     Submersion installation is when the entire sensor assembly (sensing end and body) is completely
     submersed. In addition to the normal operating pressure and temperature limits of the sensor as shown
     above, the DolpHin mounting accessories also have pressure and temperature limits. The specifications
     for the mounting accessories, shown in the Accessories section further in this document, may be
     greater or less than the sensor specifications. Always use the lesser of the two specification limits when
     designing the installation of a DolpHin sensor with accessories.
PSS 6-1C3 A
Page 12

                                           PERFORMANCE SPECIFICATIONS
                             (Under Reference Operating Conditions unless otherwise specified)

pH Measurement                                                       Accuracy - Temperature Measurement
 Performance specifications are for the domed, high                   100 Ω AND 1000 Ω PLATINUM RTD
 temperature glass electrode (pH electrode type                        ± [0.30°C + (0.005)T]
 PH10-1..., and PH10-2...). Other electrode choices                    where T = measured temperature in °C.
 include flat ruggedized glass pH, antimony pH,
 platinum ORP, and gold ORP. Selection of these                      Temperature Measurements Speed of Response
 electrodes is based on application considerations.                  (see Note below)
 Refer to Model Code Selection Guide section.                          100 Ω PLATINUM RTD
PSS 6-1C3 A
                                                                                                      Page 13

                                        FUNCTIONAL SPECIFICATIONS

Measuring Electrode                                        Automatic Temperature Compensation (ATC)
 pH MEASUREMENT                                             Integral temperature element provides temperature
  Domed glass bulb, flat glass, or antimony                 measurement for pH compensation over the full
 ORP MEASUREMENT                                            rated temperature range of the pH sensor (0 to
  Platinum or Gold                                          121°C, 32 to 250°F).

Reference Electrode                                        Solution Temperature Measurement
 The reference electrode is Ag/AgCl (silver/silver          Solution temperature measurement is based on the
 chloride) and is isolated from the internal salt-bridge    RTD. The Resistance-Temperature response is per
 by a Nafion ion barrier.                                   DIN 43760, or IEC 751-1983, and is as follows:

Measurement Range                                              Solution      Corresponding Resistance in
 pH MEASUREMENT RANGE                                        Temperature           ohms using the:
  Domed Glass                                                               100 ohm    1000 ohm      Balco
    0 to 14 pH                                                °C      °F      RTD        RTD         RTD
  Flat Glass
    2 to 12 pH                                                 0      32     100.00      1000.0       2663
  Antimony                                                    10      50     103.90      1039.0       2798
    1 to 11 pH                                                20      68     107.79      1077.9       2933
 ORP MEASUREMENT RANGE
                                                              25      77     109.73      1097.3       3000
  Platinum and Gold
    +2000 to -2000 mV                                         30      86     111.67      1116.7       3067
                                                              40     104     115.54      1155.4       3202
Electromagnetic Compatibility
                                                              50     122     119.40      1194.0       3337
 When properly installed per the applicable
 installation instructions with Foxboro Models                60     140     123.24      1232.4       3472
 870ITPH Transmitters, 875PH Analyzers, applicable            70     158     127.07      1270.7       3607
 Models 873, or other compliant transmitters or               80     176     130.89      1308.9       3742
 analyzers, the DolpHin pH and ORP sensors comply
                                                              90     194     134.70      1347.0       3877
 with the electromagnetic compatibility requirements
 of European EMC Directive 89/336/EEC by                      100    212     138.50      1385.0       4013
 conforming to the following CENELEC and IEC                  110    230     142.28      1422.8       4148
 Standards: EN-61326, and IEC 61000-4-2 through               120    248     146.06      1460.6       4283
 61000-4-6.
PSS 6-1C3 A
Page 14

                                           PHYSICAL SPECIFICATIONS

Process Wetted Parts Materials                              Sensor Connections and Cable Lengths
 BODY                                                        The sensor is offered with electrical terminations, as
   Non-conductive, Kynar, black, FDA compliant,              follows:
   mineral filled                                             • Integral Sensor Cable 10 ft (3.05 m) long;
 CHEMICAL COMPATIBILITY                                          terminated with crimped-on straight pin lugs.
   Kynar, known by polyvinylidene fluoride, or PVDF,             Optional cable lengths of 20, 30, 40, or 50 ft
   is chemically resistant to virtually all acids, bases,        (6.1, 9.1, 12.2, or 15.2 m) are offered.
   and salts within the 0 to 14 pH range. It is also          • Integral Sensor Cable 10 ft (3.05 m) long;
   resistant to halogens, halogenated solvents,                  terminated in a Variopin quick connector.
   alcohols, and oxidants.                                       Optional cable lengths of 20, 30, 40, or 50 ft
 MEASURING ELECTRODE                                             (6.1, 9.1, 12.2, or 15.2 m) are offered.
   Glass or antimony for pH;                                  • Variopin quick connector integral to sensor
   and platinum or gold for ORP                                  housing end.
 REFERENCE ELECTRODE                                         Standard cable is PVC jacketed. High temperature
   Ceramic junction                                          cable is cross-linked, irradiated, polyethylene (xple).
 SOLUTION GROUND                                             Variopin quick connector is IP 67 rated, with nickel
   Conductive Kynar (nonmetallic)                            plating and Viton O-ring.
 SEALS
   Viton is standard; EPDM (also known as EPR) and           When a preamplifier internal to the sensor is used,
   Chemraz are optionally available.                         the transmitter or analyzer can be up to 500 ft
                                                             (152 m) away from the sensor. If no sensor internal
Sensor Mounting                                              preamplifier is used, the distance is limited to 50 ft
 The upper housing of the sensor has 3/4 NPT                 (15.2 m). See Figure 12 for typical cable and cable
 external threads on both ends for use with widely           extension configurations.
 accepted mounting accessories. The housing body             LEGEND
 also has wrench flats to facilitate sensor installation     S-N = SENSOR, NO PREAMP
 and removal. The sensor, with the appropriate               S-P = SENSOR, WITH PREAMP
 accessories, is suitable for both in situ (submersible)     JB = JUNCTION BOX;
                                                             T/A = TRANSMITTER OR ANALYZER
 and in-line installations. As indicated previously, the
 sensor can be mounted up to 90° from the vertical                                       50 ft
                                                              S-N                                                           T/A
 position, with the electrode end downward. Figure 5
 shows typical sensor mounting configurations, and                     10 to 40 ft                to 50 ft total
                                                              S-N                          S-N
                                                                                           JB                               T/A
 the “ACCESSORIES” section describes and
 specifies each accessory and its application.                           to 50 ft          JB to 500 ft total
                                                                                           S-N
                                                              S-P                                                           T/A

Dimensions                                                     Figure 12. Typical Integral Cable with Pin Lugs
  • See “Dimensions - Nominal” section for Sensor                   and Cable Extension Configurations
    dimensions.
  • See DP 611-172 for dimensions of the Sensor                                                            to 50 ft total
                                                                           10 to 40 ft
    Ball Valve and Insertion Tube Assemblies.                  S-N-B                        S-N
                                                                                            VP                              T/A
  • See DP 611-173 for dimensions of Sensor
                                                                                         to 50 ft total
    Accessories.                                               S-N-Q VP                                                     T/A
  • See DP 014-256 and DP 611-160 for dimensions                                                          to 500 ft total
                                                                           10 to 50 ft
    of Q0101CF and BS807BZ junction boxes,                     S-P-B                        S-N
                                                                                            VP                              T/A
    respectively.                                                                        to 500 ft total
                                                               S-P-Q VP                                                     T/A

                                                              LEGEND
                                                              VP = VARIOPIN QUICK CONNECTOR
                                                              S-N-B    SENSOR, NO PREAMP, CABLE WITH VARIOPIN
                                                              S-N-Q    SENSOR, NO PREAMP, INTEGRAL VARIOPIN
                                                              S-P-B    SENSOR, WITH PREAMP, CABLE WITH VARIOPIN
                                                              S-P-Q    SENSOR, WITH PREAMP, INTEGRAL VARIOPIN
                                                              Figure 13. Typical Variopin Quick Connector and
                                                                         Patch Cord Configurations
PSS 6-1C3 A
                                                                                                       Page 15

                                  ELECTRICAL SAFETY SPECIFICATIONS (1)

                                                                                                    Electrical
 Testing Laboratory, Types of Protection,                                                         Safety Design
         and Area Classification                             Application Conditions                 Code (2)
ATEX Intrinsically safe; II 1 G, EEx ia II C,     Connect to certified 870IT pH Transmitter.      CS-E/EAA
Zone 0; hazardous locations.                      Temperature Class T4 to T6.
CSA intrinsically safe for Class I, Division 1,   Connect to certified 870IT pH Transmitter per   CS-E/CAA
Groups A, B, C, and D; Class II, Division 1,      MI 611-206. Temperature Class T6.
Groups E, F, and G; and Class III, Division 1.
CSA nonincendive for Class I, Division 2,         Connect to 870IT pH Transmitter, or 873PH,      CS-E/CNN
Groups A, B, C, and D.                            873APH, or 875 PH Analyzer per MI 611-206.
                                                  Temperature Class T6.
FM intrinsically safe for Class I, Division 1,    Connect to approved 870IT pH Transmitter per CS-E/FAA
Groups A, B, C, and D; Class II, Division 1,      MI 611-206. Temperature Class T4 at 85°C
Groups E, F, and G; and Class III, Division 1.    maximum ambient.
FM nonincendive for Class I, Division 2,          Connect to approved 870IT pH Transmitter, or    CS-E/FNN
Groups A, B, C, and D; Class II, Division 2,      873PH, 873APH, or 875PH Analyzers per
Groups F and G; and Class III, Division 2.        MI 611-206. Temperature Class T4 at 85°C
                                                  maximum ambient.
SAA Ex, ia, IIC. Intrinsically safe, Gas          Connect to certified 870IT pH Transmitter.      CS-E/AAA
Group IIC, Zone 0.                                Temperature Class T4 and T6.
                                                      NOTES
  1. These sensors have been designed to meet the Electrical Safety descriptions listed above. For detailed
     information, or status of testing laboratory approval, or certifications, contact Foxboro.
  2. Specify Electrical Safety Design Code when ordering sensor for applications requiring certification.
PSS 6-1C3 A
Page 16

                                                  ACCESSORIES

Universal Bushing Assembly
 The universal bushing assembly is comprised of a
 bushing, a lockscrew, a Viton O-ring, a back-up ring,
 and a split ring, and provides the following features:
  • Allows sensor insertion and removal without
    causing cable “wind-up”.
                                                                  Photo File 0209024 F
  • Allows adjustment of submersion depth at either
    2.1 or 3.1 in (53 or 79 mm) with the flat electrode,
    or either 2.5 or 3.5 in (63 or 89 mm) with the
    domed glass electrode.
  • Provides a 1 NPT process connection, rather
    than the 3/4 NPT connection on the sensor body.                             Figure 15.
                                                           Universal Bushing Shown with Flat Glass Sensor
 The bushing assembly is available in 316 ss or             Installed in Position for 2.1 inch Insertion Depth
 PVDF materials. See Figures 14 to 17 and table
 below.

       Table of Universal Bushing Assemblies
  Material    Assembly Part No.           Thread
  316 ss           BS810XC                 1 NPT                  Photo File 0209024 G
  316 ss           BS810XD              ISO R-1 1/2
  PVDF             BS810XB                 1 NPT
  PVDF             BS810XE                ISO R-2
             Pressure-Temperature Rating
  316 ss      1.4 MPa at 121°C      (200 psi at 250°F)
                                                                                Figure 16.
  PVDF        0.7 MPa at 90°C       (100 psi at 194°F)
                                                           Universal Bushing Shown with Flat Glass Sensor
              0.35 MPa at 121°C     (50 psi at 250°F)
                                                            Installed in Position for 3.1 inch Insertion Depth

           Photo File 0209024 D
                                                                       BUSHING
                                                                       LOCKSCREW               SENSOR
                                                                                               ASSEMBLY
                                                                                               (REFERENCE)

                                                                                               O-RING SEAL,
                       Figure 14.                                                              SPLIT RING,
 Universal Bushing and Sensor Showing Split Ring,                                              BACKUP RING,
   O-ring, and Back-up Ring Installed on Sensor                         BUSHING                AND STOP USED
                                                                                               IN ONE OF TWO
       in Position for 2.1 inch Insertion Depth
                                                                                               LOCATIONS ONLY.

                                                                        1 NPT                  3/4 NPT
                                                                        PROCESS                (NOT USED)
                                                                        CONNECTION
                                                                                               FLAT
                                                                                               ELECTRODE
                                                                                               SHOWN

                                                                Figure 17. Universal Bushing Assembly
PSS 6-1C3 A
                                                                                                          Page 17

                                                      ACCESSORIES (Cont.)

Bushings
 Bushings may be used to mount sensors in a system
 using process piping larger than DN 20 or 3/4 inch.                 HC, HK            HA              HF, HG
 PVDF and 316 ss bushings are threaded on both
 ends, while CPVC(1) bushings are threaded on one
 end and provide a slip fit on the opposite end. See
 Figure 18. The bushing identification in Figure 18
 corresponds to the last two characters in the bushing             CE, CF, HJ                            HM
 part numbers listed in the table below.                                             GZ, HH

                      Table of Bushings
                            Part Number using:
  Bushing           316 ss           PVDF             CPVC
  Size (a)          (NPT)            (NPT)            (Slip)                       HN, HP
                                                                                                       KN
3/4 x 1         BS810HA          BS810HC          BS810KL            KL, KM
3/4 x 1 1/4     BS810HF              –            BS810KM
3/4 x 1 1/2     BS810HG          BS810GZ          BS810KN
1x1             BS810HJ          BS810HK          BS810HM
1 x 1 1/4       X0177CF              –            BS810HN
1 x 1 1/2       X0177CE          BS810HH          BS810HP

              Pressure-Temperature Rating                            Figure 18. Typical Bushing Configurations
316 ss       1.4 MPa at 121°C           (200 psi at 250°F)
PVDF         0.7 MPa at 90°C            (100 psi at 194°F)
             0.35 MPa at 121°C          (50 psi at 250°F)
CPVC         0.7 MPa at 70°C            (100 psi at 158°F)
             0.4 MPa at 85°C            (60 psi at 185°F)
(a) Bushings with 3/4 NPT ID are used directly with DolpHin
    sensor. Bushings with 1 NPT ID are used with 1 inch
    Universal Bushings. Also, 1 x 1 bushings are used to
    lessen insertion depth.

(1) CPVC = Chlorinated Polyvinyl Chloride.
PSS 6-1C3 A
Page 18

                                               ACCESSORIES (Cont.)

Tees
 A tee is available for insertion in a pipeline with user-
                                                                 TOP AND ENDS ARE EITHER ALL NPT
 supplied bushings, as necessary. The tee is offered               OR ALL SLIP FIT DEPENDING ON
 in three sizes and available in 316 ss, PVDF, or                         MATERIAL USED.
 CPVC materials. PVDF and 316 ss tees are
 threaded on all three ends, while CPVC tees provide
 a slip fit on all three ends. See table below and
 Figure 19. Also see the Tee Kits section that follows
 for tee/bushing assembly configurations.

                      Table of Tees
                         Part Number using:
                  316 ss         PVDF          CPVC
  Tee Size        (NPT)          (NPT)         (Slip)
      1         X0178JB       X0178HV        X0178HY             Figure 19. Typical Tee Configuration
    1 1/4       X0178HW           –          X0178HZ
    1 1/2       X0173JY       X0178HX        X0178JA

             Pressure-Temperature Rating
316 ss      1.4 MPa at 121°C       (200 psi at 250°F)
PVDF        0.7 MPa at 90°C        (100 psi at 194°F)
            0.35 MPa at 121°C      (50 psi at 250°F)
CPVC        0.7 MPa at 70°C        (100 psi at 158°F)
            0.4 MPa at 85°C        (60 psi at 185°F)
PSS 6-1C3 A
                                                                                                                Page 19

                                                        ACCESSORIES (Cont.)

Tee Kits
 A tee kit consists of a tee and a bushing assembled
 together. The top of the assembly is for the sensor                                          NPT BUSHING
 connections, while the two ends are for the pipeline
 connections. The assembled kits are available in                                                NPT TEE
 316 ss, PVDF, or CPVC. The 316 ss and PVDF kits
 have all NPT connections, while the CPVC kits have
 an NPT connection on top for the sensor, and slip fit
 connections on the pipeline ends. See table below
 and Figure 20.

                        Table of Tee Kits                                                      SLIP BUSHING

                          Assembled Kit Part No. Using:                                          SLIP TEE
    Assembled              316 ss          PVDF           CPVC
     Size (a)              (NPT)           (NPT)          (Slip)
3/4 x 1 x 1              BS810HS BS810HV BS810HU
3/4 x 1 1/4 x 1 1/4 BS810HW                   –        BS810HZ
3/4 x 1 1/2 x 1 1/2 BS810JA             BS810JB BS810JD                 Figure 20. Typical Tee Kit Configurations
1x1x1                    BS810JE        BS810JF BS810JH
1 x 1 1/4 x 1 1/4        BS810JJ              –        BS810JM
1 x 1 1/2 x 1 1/2        BS810JN        BS810JP BS810JR

              Pressure-Temperature Rating
316 ss       1.4 MPa at 121°C            (200 psi at 250°F)
PVDF         0.7 MPa at 90°C             (100 psi at 194°F)
             0.35 MPa at 121°C           (50 psi at 250°F)
CPVC         0.7 MPa at 70°C             (100 psi at 158°F)
             0.4 MPa at 85°C             (60 psi at 185°F)
(a) Tee kits with 3/4 NPT bushing are for direct connection of
    DolpHin series.
    Tee kits with 1 NPT bushing are for use with 1 NPT
    Universal Bushings.
PSS 6-1C3 A
Page 20

                                             ACCESSORIES (Cont.)

Universal Tri-Clamp Connection Assembly
 A Tri-Clamp connection assembly is offered for users
 who require a quick-disconnect mounting
 arrangement. The mating Tri-Clamp flange and
 clamp are provided by the user. The Tri-Clamp
 connection assembly replaces the universal bushing
 assembly described previously, and is similarly                     BUSHING
                                                                     LOCKSCREW             SENSOR
 locked in place with a bushing lockscrew. The                                             ASSEMBLY
 connection assembly is comprised of the Tri-Clamp                                         (REFERENCE)
 connection assembly, lockscrew, Viton O-ring, back-
 up ring, and split ring. Tri-clamp connections are
 available in standard 1.5 and 2 inch sizes, and are
 made from 316 ss with a 32 microinch finish, or                                            INTERNAL
 better. See Figure 21 and table below.                                                     O-RING SEAL,
                                                                                            BACKUP RING,
                                                                                            SPLIT RING,
       Table of Tri-Clamp Connection Assemblies                                             AND STOP USED
                 Tri-Clamp Connection Assembly                                              IN ONE OF TWO
                                                                                            LOCATIONS ONLY.
   Material          Part No.               Size                     TRI-CLAMP              3/4 NPT
    316 ss           BS810ZU               1.5 in                    CONNECTION             (NOT USED)
                                                                     ASSEMBLY
    316 ss           BS810ZT                2 in                                            FLAT
              Pressure-Temperature Rating                                                   ELECTRODE
                                                                                            SHOWN
    316 ss     1.4 MPa at 121°C (200 psi at 250°F)

Universal Flanged Connection Assembly with                Figure 21. Universal Tri-Clamp Connection Assembly
Integral (Welded-in-Place) Universal Bushing
Assembly
  A flanged end connection assembly is offered for
  users who require a flange mounted sensor with an
  integral universal bushing assembly. The mating
  flange and flange gasket and bolts are provided by
                                                                    BUSHING
  the user. The universal bushing assembly described                LOCKSCREW             SENSOR
  previously is welded to the flange to form a flanged                                    ASSEMBLY
  end connection assembly, as shown in Figure 22.                                         (REFERENCE)
  Flanged end connection assemblies are comprised                                           INTERNAL
  of a flange welded to a universal bushing, lockscrew,                                     O-RING SEAL,
  Viton O-ring, back-up ring, and split ring. Flange                                        BACKUP RING,
  assemblies are made from 316 ss and available in                                          SPLIT RING,
                                                                                            AND STOP USED
  ANSI Class 150, 2-, 2-1/2-, and 4-inch sizes; and PN                                      IN ONE OF TWO
  10, DN 50 and DN 100 sizes. See Figure 22 and                                             LOCATIONS ONLY.
  table below.

    Table of Flanged End Connection Assemblies
                                                             FLANGE ASSEMBLY
         Flange End Connection Assembly                      (UNIVERSAL BUSHING            3/4 NPT
   Rating          Size      Holes       Part No.            WELDED IN PLACE)              (NOT USED)

     ANSI       2 in            4        BS810ZN
                                                                                          FLAT
  Class 150     2-1/2 in        4        BS810ZP                                          ELECTRODE
   (316 ss)     4 in            8        BS810ZQ                                          SHOWN
 DIN PN 10      DN 50           4        BS810ZR
  (316 ss)      DN 100          8        BS810ZS           Figure 22. Flanged End Connection Assembly with
                                                              Welded-in-Place Universal Bushing Assembly
             Pressure-Temperature Rating
   316 ss       1.4 MPa at 121°C (200 psi at 250°F)
PSS 6-1C3 A
                                                                                                   Page 21

                                            ACCESSORIES (Cont.)

Universal Flanged Connection with Sensor
Assembly Threaded Directly to Flange
 A flanged end connection with 3/4 NPT is offered for
 threading sensor directly to flange. Mating flanges,
 gaskets, and bolts are provided by the user. The           ANSI OR                         SENSOR
 flange is made from 316 ss and available in ANSI           DIN FLANGE.                     ASSEMBLY
 Class 150, 2-, 2 1/2-, and 4-in sizes; and PN 10, DN       FOUR BOLT HOLES                 (REFERENCE)
 50, and DN 100 sizes. See Figure 23 and table              WITH 2 in, 2 1/2 in,
                                                            AND DN 50 SIZES.
 below.                                                     EIGHT BOLT HOLES
                                                            WITH 4 in AND
            Table of ANSI and DIN Flanges                   DN 100 SIZES.

          Flange End Connection Assembly                                                3/4 NPT
                                                                                        CONNECTION
  Rating         Size     Holes         Part No.
   ANSI    2 in              4       BS808MP
 Class 150 2-1/2 in          4       BS809LZ
           4 in              8       BS808MA
 DIN PN 10 DN 50             4       BS808MB             Figure 23. Flanged End Connection with Sensor
           DN 100            8       BS809LW                  Assembly Threaded Directly to Flange
            Pressure-Temperature Rating
   316 ss     1.4 MPa at 121°C    (200 psi at 250°F)

Flow Chambers
 Flow chambers are a convenient way of mounting
 sensors in a system where a sample is provided by a
 small diameter sample line. The inlet and outlet
 ports of the chamber have 1/2 NPT threads, and
 connect to the system with user supplied fittings.
                                                                                             SENSOR
 The chamber is offered in 316 ss, PVDF, or CPVC.                                            ASSEMBLY
 See Figure 24 and table below.
                                                                         3/4 NPT
                                                           316 ss
               Table of Flow Chambers                    AND CPVC
                                                                                                  PVDF
                                       Sensor
Material       Part Number           Connection                       1/2 NPT

 316 ss          BS810SR                3/4 NPT
 PVDF            BS810SS                3/4 NPT
 CPVC            BS810SU                3/4 NPT
            Pressure-Temperature Rating                                  SENSOR CONNECTION

 316 ss     1.4 MPa at 121°C      (200 psi at 250°F)                       PROCESS OUTLET

 PVDF       0.7 MPa at 90°C       (100 psi at 194°F)                        PROCESS INLET
            0.35 MPa at 121°C     (50 psi at 250°F)
 CPVC       0.7 MPa at 70°C       (100 psi at 158°F)
            0.4 MPa at 85°C       (60 psi at 185°F)
                                                                     Figure 24. Flow Chamber
PSS 6-1C3 A
Page 22

                                              ACCESSORIES (Cont.)

Insertion Assemblies                                         The DolpHin sensor is attached to the shaft with
 Insertion assemblies are used to install DolpHin            redundant seals; 3/4 NPT sensor thread connects to
 sensors in a hot tap/retractable type mountings.            the insertion shaft, creating one seal, while an O-
 They permit the sensor to be inserted and removed           ring on the upper body of the sensor seals on the ID
 from the process, under rated pressure and                  of the shaft/sensor coupling. This sealing
 temperature, without draining the tank, shutting            mechanism, when properly installed, prevents
 down a line, or using a bypass system. The insertion        process liquid from migrating out through the shaft
 assemblies are offered in three ways:                       and possibly out the cable conduit to the transmitter.

 • Insertion Tube Assembly, BS810JU, for use with            These ball valve insertion assemblies are one of the
   a user-supplied ball valve; requires 1 1/4 full port      most effective, safe, versatile means for installing the
   or larger ball valve                                      DolpHin sensors. Refer to Figure 25 and table
                                                             below.
 • Ball Valve Insertion Assembly, BS810LV,
   complete with 1 1/4 full port ball valve, retraction                            NOTE
   chamber with purge ports, and 0 to 8 inch                    Insertion assemblies are not compatible with
   adjustable insertion depth                                   sensor termination Code B. However,
                                                                Termination Codes A and Q are compatible.
 • Ball Valve Insertion Assembly, BS810MJ, similar
   to BS810JU but with 0 to 16 inch adjustable                                 Insertion Assemblies
   insertion depth.
                                                                                     Insertion
 All three types provide continuously adjustable             Assembly Type             Tube              Ball Valve
 insertion depth from 0 to full length of tube, using a     Adjustable          0 to 14 in 0 to 8 in 0 to 16 in
 compression seal to hold the insertion shaft at the        Insertion Depth (a)
 desired depth. This allows the installer to locate the
                                                            Part Number         BS810JU BS810LV BS810MJ
 sensing end of the pH/ORP probe at the optimum
                                                            (a) Refer to Dimensional Print DP 611-172.
 location for the application, and to adjust the depth in
 response to unexpected plumbing/hardware
 installation revisions.                                                 Pressure-Temperature Rating

 All three insertion assemblies include anti-blowout        316 ss      1.4 MPa at 121°C           (200 psi at 250°F)
 protection; sensor and shaft will not fit through the
 compression nut.
                                                                   INSERTION       RETRACTION
 The complete assemblies (BS810LV and BS810MJ)                     SHAFT           CHAMBER
 also offer the safety feature of purge ports on the
 retraction chamber. This allows the operator to
 purge away hot, pressurized, or hazardous                     SENSOR              VITON                            PUSH-
 chemicals before opening the assembly and                                         O-RINGS                          PULL
                                                                                                                    PLATE
 servicing the sensor.

 Process Wetted Materials are 316 ss, teflon ball
 seat, and Viton O-rings. Process connection is
 1 1/4 NPT.                                                     SENSOR                                       RETAINING
                                                                        PURGE PORT 1/2 NPT                   RINGS
 These assemblies include ease-of-use features,
 such as the push/pull plate for easy movement of the
 insertion shaft. Accessing the sensor is easy, and
 assembly parts stay together even when removing            1 1/4 NPT
 the sensor, so parts do not get lost.                         BALL VALVE                            LIQUID TIGHT
                                                                      RETRACTION CHAMBER             FITTING

                                                            Figure 25. Ball Valve and Insertion Tube Assemblies
PSS 6-1C3 A
                                                                                                          Page 23

                                            ACCESSORIES (Cont.)

Junction Boxes
 Two surface-mounted junction boxes are offered.
                                                               JUNCTION BOX WHEN             JUNCTION BOX WHEN
 One, with terminals for seven conductors is for a             NO PREAMP IS USED             THERE IS A PREAMP
 sensor without a preamplifier. The second junction
 box, with terminals for nine conductors, is for a       3/4 NPT
 sensor with an internal preamplifier. There is a        ON THIS
 generous amount of space within each junction box       SIDE
                                                                      ELECT. SHIELD
                                                                     MEAS. ELECTRODE
 to accommodate the terminal blocks, and the sensor
 and transmitter/ analyzer cable assembly
 terminations. These junction boxes are weatherproof
 and dusttight as defined by IEC IP65 and provide the                SOL. REF.
                                                                     GND. ELEC.
                                                                                  TEMP.
                                                                                  COMP.

 watertight protection of NEMA Type 4. See
 Figure 26 and table below.
  Junction Box
    Assembly
     Part No.                  Application                 Figure 26. Junction Boxes - Surface Mounted
    Q0101CF       When sensor does not include
                  preamp, Model Code Selection “N”
                                                                          7-CONDUCTOR CABLE
    BS807BZ       When sensor includes integral                      FOR SENSORS WITHOUT PREAMP
                  preamp, Model Code Selection “P”
                                                                                            NUMBERED
Patch Cords and Extension Cable Assemblies                                                  LABELS
 Extension cables are offered for adding length to the
 connection between the DolpHin sensor and the
 transmitter/analyzer. Choices include standard
 cable, high temperature cable, terminated cable
 ordered to length, and raw cable unterminated.                         STRAIGHT
 Variopin quick connector or Foxboro specified                          PIN LUG           COAXIAL
                                                                                          CABLE
 junction box is recommended for connection of
 extension cable to sensor or sensor cable. This is
 especially important for sensors without integral
                                                                            9-CONDUCTOR CABLE
 preamplifiers.                                                          FOR SENSORS WITH PREAMP
 Cable termination for connection to transmitter/                                          NUMBERED
 analyzer and junction box are crimped on straight                                         LABELS
 pin lugs. Because of the straight pins, this style
 cable termination is much easier to pull through
 conduit than spade or other style lug terminations.
 Pin lug leads are numbered for connection to
 corresponding terminal strip numbers in Foxboro
 transmitters and analyzers. Refer to Figure 27.
                                                                              STRAIGHT
                                                                              PIN LUG

                                                             Figure 27. Extension Cable Assembly with
                                                                  Straight Pin Lugs on Both Ends
PSS 6-1C3 A
Page 24

                                            ACCESSORIES (Cont.)

Patch Cords and Extension Cable Assemblies
(Cont.)
                                                                            CABLE LENGTH
  The Variopin quick connector is also available as a
  cable termination on one end of the extension cable                 SEVEN CONDUCTORS SHOWN
  and pin lugs on the other (also referred to as a
  “patch cord”). The connector is rated IP 67, with
  nickel plating and Viton O-rings. This extension
  cable is selected for use with sensors equipped with
                                                          VARIOPIN QUICK            NUMBERED
  the mating Variopin quick connector, Model Code                                   LABELS
                                                          CONNECTOR                              STRAIGHT
  selection “B” or “Q”; refer to the Model Code                                                  PIN LUG
  Selection Guide section for advice. Refer to
  Figure 28.                                                   Figure 28. Extension Cable Assembly with
                                                          Variopin Quick Connector and Straight Pin Lugs For
 To select the proper cable, first determine if the               Sensors with or without Preamplifier
 sensor will have an integral preamplifier. The sensor
 model code contains an “N” for no preamp or a “P”
 for preamp. Refer to the model code selection guide      EXTENSION CABLE
 for advice regarding the preamplifier. Then select the   PRIOR TO ADDING
 cable termination, length and temperature rating         TERMINALS                         COAXIAL CABLE
 required for the installation.                           POLYETHYLENE
                                                          JACKET
 Extension cables for sensors without preamp are
 available as standard cable with PVC jacket, 85°C
 rating, 7 conductors (coax plus 5). They are also
                                                                                            TERMINATIONS
 available in a high temperature version, with                                              SUPPLIED
 irradiated cross linked polyethylene jacket, rated to                                      BY USER
 125°C, also 7 conductors (coax plus 5). Sensors
 without preamps are restricted to 50 feet or less               Figure 29. Raw, Unterminated Cable
 separation between sensor and transmitter/analyzer.             7-Conductor Extension Cable Shown
 Therefore, extension cables in this group are
 available in lengths up to 50 feet. Longer distances
 require the use of a preamp.

 Extension cables for sensors with preamps are
 available as standard cable with PVC jacket, 85°C
 rating, 9 conductors. Preamps and preamp cable are
 not available for temperatures above 85°C.
 Extension cable for both the pin lug termination and
 Variopin types are available up to 500 feet maximum
 and are ordered by the foot.

 Raw, unterminated cable is also available in
 continuous lengths up to 1000 feet. The installer
 must cut the cable to length and terminate the leads.
 Refer to Figure 29.
PSS 6-1C3 A
                                                                                                  Page 25

                                         ACCESSORIES (Cont.)

Patch Cord, Extension Cable, and Raw Cable Part Numbers
Patch Cords - for use with Sensors without Preamplifier (Model Code “N”)
                                                                                                Length
     Part No.             Temperature Range                    Cable Terminations                (Feet)
    BS811GU                Standard (to 85°C)                  Variopin to Pin Lugs               10
    BS811GV                Standard (to 85°C)                  Variopin to Pin Lugs               20
    BS811GW                Standard (to 85°C)                  Variopin to Pin Lugs               30
    BS811GX                Standard (to 85°C)                  Variopin to Pin Lugs               40
    BS811GY                Standard (to 85°C)                  Variopin to Pin Lugs               50
    BS810QA               High Temp (to 125°C)                 Variopin to Pin Lugs               10
    BS810QB               High Temp (to 125°C)                 Variopin to Pin Lugs               20
    BS810QC               High Temp (to 125°C)                 Variopin to Pin Lugs               30
    BS810QD               High Temp (to 125°C)                 Variopin to Pin Lugs               40
    BS810QE               High Temp (to 125°C)                 Variopin to Pin Lugs               50

Extension Cable - for use with Sensors without Preamplifier (Model Code “N”)
     Part No.             Temperature Range                  Cable Terminations             Length (Feet)
    BS811HE               Standard (to 85°C)                  Pin Lugs to Pin Lugs                10
    BS811HF               Standard (to 85°C)                  Pin Lugs to Pin Lugs                20
    BS811HG               Standard (to 85°C)                  Pin Lugs to Pin Lugs                30
    BS811HH               Standard (to 85°C)                  Pin Lugs to Pin Lugs                40
    BS811HJ               Standard (to 85°C)                  Pin Lugs to Pin Lugs                50
    BS810ZV              High Temp (to 125°C)                 Pin Lugs to Pin Lugs                10
    BS810ZW              High Temp (to 125°C)                 Pin Lugs to Pin Lugs                20
    BS810ZX              High Temp (to 125°C)                 Pin Lugs to Pin Lugs                30
    BS810ZY              High Temp (to 125°C)                 Pin Lugs to Pin Lugs                40
    BS810ZZ              High Temp (to 125°C)                 Pin Lugs to Pin Lugs                50

Extension Cable - for use with Sensors with Integral Preamplifier (Model Code “P”)
     Part No.                   Patch Length               Temperature Range       Cable Terminations
    BS811JB          Patch Cord, per foot to 500 ft max.      Standard (to 85°C)      Variopin to Pin Lugs
    BS811HW        Extension Cable, per foot to 500 ft max.   Standard (to 85°C)      Pin Lugs to Pin Lugs

Raw Cable, Unterminated, Maximum Continuous Length, 1000 ft
    Part No.                                      Description
    P0170UU                        For Non-Preamp Sensor, Standard Temp (85°C), per foot
    P0170UA                        For Non-Preamp Sensor, High Temp (to 125°C), per foot
    P0170UV                          For Preamp Sensor, Standard Temp (85°C), per foot
PSS 6-1C3 A
Page 26

                                                          ACCESSORIES (Cont.)

Buffers for use with DolpHin Model PH10 Sensors
 Buffers are available as a solution, or in a salt
 packet. When provided in a salt packet, the buffer is
 mixed with 0.47 litres (16 fluid ounces) of distilled
 water to convert to a buffer solution. Refer to                                                     SALT PACKET
 Figure 30 and the table below for Foxboro part                                                      CONVERTS TO
                                                                                                   BUFFER SOLUTION
 numbers for Buffer Solutions and Salt Packets.

       Table of Buffer Solutions and Salt Packets
   Type             Buffer Description                   Part No.
Solution      4.00 pH, 0.47 L (16 fl oz)               Q0104KC
              7.00 pH, 0.47 L (16 fl oz)               Q0104KB
                                                                        BUFFER SOLUTION
              10.00 pH, 0.47 L (16 fl oz)              Q0104KA          IN PLASTIC BOTTLE
Salt          4.00 pH (Note a)                         1600100
Packet        7.00 pH (Note a)                         1600101          Figure 30. Buffer Solutions and Salt Packets
              10.00 pH (Note a)                        1600102
(a)Mix buffer packet with 0.47 L (16 fl oz) of distilled water to
convert to solution form.
PSS 6-1C3 A
                                                                                                                        Page 27

                                           DIMENSIONS - NOMINAL
                                                           mm
                                                            in

          SENSOR                                    SENSOR                                SENSOR WITH INTEGRAL
          WITH FLAT                               WITH DOMED                                QUICK-DISCONNECT
         ELECTRODE                                ELECTRODE                                    CONNECTOR

                       SENSOR WITH CABLE.                                          VARIOPIN
                        TERMINATED WITH                                             QUICK
                                                                                                                    43
                      CRIMPED-ON FERRULE                                          CONNECTOR
                                                                                                                    1.7
                      TERMINALS OR "QUICK"
                          CONNECTOR

                            3/4 NPT CONDUIT
                              CONNECTOR
                                 BUSHING
                               LOCKSCREW

                                MOVABLE
                             BUSHING GUIDE
                              (SPLIT RING)                                 B

                               OPTIONAL
 A                             UNIVERSAL
                                VARIABLE
                             DEPTH BUSHING
                               WITH 1 NPT
                                PROCESS
                              CONNECTOR

                             23 mm (0.90 in)
                             WRENCH FLATS
                                 3/4 NPT
     C
                                PROCESS                                D
                               CONNECTOR

                            ELECTRODE
                         PROTECTIVE GUARD
FLAT ELECTRODE                                                   DOMED ELECTRODE

                            Flat Electrodes - Protective Guard not Required
           pH Sensors                  ORP Sensors                Dimension “A”            Dimension “C” (a)
                                                                                             53 mm (2.1 in) or
          PH10-2, -3, -4                ORP10-1, -2               170 mm (6.7 in)
                                                                                              79 mm (3.1 in)
     (a) Dimension “C” is adjustable to dimensions listed by adjusting the position of the bushing on the sensor.

                                 Domed Electrodes with Protective Guard
           pH Sensors                  ORP Sensors                Dimension “B”            Dimension “D” (a)
                                                                                             63 mm (2.5 in) or
         PH10-1, PH30-1                Not Applicable             180 mm (7.1 in)
                                                                                              89 mm (3.5 in)
     (a) Dimension “D” is adjustable to dimensions listed by adjusting the position of the bushing on the sensor.

                                            NOTE
 Numerous accessories are offered with the DolpHin sensors. For dimensional information, see
 DP 611-172 for ball valve and tube assemblies, and DP 611-173 for all other accessories.
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