2019-2020 Catalog - Apogee Instruments
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2019-2020 Catalog
Product Line
4 Net Radiometers
5 Thermopile Pyranometers
We are often amazed by the incredible places our sensors are 6 Silicon-cell Pyranometers and Meters
used. We love when customers send pictures of Apogee sensors 8 Pyrgeometers
in action, especially in rugged conditions. Ensuring our sensors NEW 9 Photometric Sensors
perform in harsh elements is one of our passions, which is why
10 Lab Spectroradiometers
we constantly and creatively stress-test our products at our
headquarters and treasure customer feedback from the field. 11 Field Spectroradiometers
Whenever a weakness is detected, we will tweak our design until NEW 12 Quantum Sensors and Meters
we get it right. This is hard and frustrating work. But when we NEW 16 PAR-FAR Sensors
see pictures like those to the right, it's gratifying. We cherish our 17 Red - Far Red Sensors
NEW
reputation of quality at Apogee Instruments and intend to keep it
that way. NEW 18 NDVI and PRI Sensors
19 Chlorophyll Concentration Meter
20 Infrared Radiometers and Meters
Apogee Instruments. Designed by scientists, for scientists. 22 Fan-aspirated Radiation Shield
23 Humidity Probes
24 Temperature and Barometric Pressure Sensors
25 Leaf and Bud Temperature Sensors
26 Oxygen Sensors and Meters
NEW 27 Coming Soon
2 apogeeinstruments.com
Net Radiometer
Accurate measurement in a compact design
High Accuracy
Measure all four components of net radiation with a digital output that saves
datalogger channels. Comparable accuracy to industry-leading competition
in long-term field testing with a smaller housing and at a fraction of the price.
Heated Sensors SN-500-SS
Each sensor includes a 0.2 W heater to minimize errors from dew, frost, rain, Input Voltage Range
5.5 to 16 V DC (heaters are optimized to run
and snow that can block the radiation path. at 12 V DC)
Heaters on, communication enabled: 63 mA;
Case Study Current Draw (12 V DC
Heaters off, communication enabled: 1.5 mA;
Apogee Instruments' net radiometers are used by Alaska Electric Light & Supply Voltage)
Heaters off, communication disabled: 0.6 mA
Power in avalanche forecasting.
Response Time (using 1 s (SDI-12 data transfer rate; detector
SDI-12 Protocol) response times are 0.5 s)
Heaters (sensors 62 mA current draw and 740 mW power
individually heated) requirement at 12 V DC
Operating Environment -50 to 80 C; 0 to 100 % relative humidity
Dimensions 116 mm length, 45 mm width, 66 mm height
320 g (with mounting rod and 5 m of lead
Mass
wire)
M8 connector (IP68 rating) to interface to
sensor housing; 5 m of four conductor,
Cable
shielded, twisted-pair wire with TPR jacket;
pigtail lead wires
*For individual sensor specifications, view the thermopile pyranometer
and pyrgeometer pages.
4 apogeeinstruments.com Photo credit: Alaska Electric Light & Power
Thermopile Pyranometers
Blackbody accuracy with a compact design
SP-510-SS SP-610-SS
(Upward-Looking) (Downward-Looking)
ISO 9060:2018 Class C
Sensitivity (variable from
sensor to sensor, typical 0.057 mV per W m⁻² 0.15 mV per W m⁻²
values listed)
Calibration Factor
(variable from sensor to 17.5 W m⁻² per mV 6.7 W m⁻² per mV Cost-Effective Design
sensor, typical values listed) The thermopile, blackbody detector results in significant spectral
Calibration Uncertainty ±5% response improvements over silicon-cell pyranometers. A small design
Output Type 0 to 114 mV 0 to 300 mV
keeps the price low and optimizes power requirement for the 0.2 W
heater that minimizes errors from dew, frost, and snow.
Measurement Range 0 to 2000 W m⁻² (net shortwave irradiance)
Measurement Repeatability Less than 1 % Accurate, Stable Measurements
Directional errors are less than 30 W m⁻² at 80° solar zenith angle with
Long-term Drift Less than 2 % per year less than 2 % drift per year.
Non-linearity Less than 1 %
Detector Response Time 0.5 s Outputs and Options
0 to 114 mV range. A downward sensor is available for measuring
Field of View 180° 150° shortwave reflectance, or can be combined with an upward-looking
Spectral Range (50 % points) 385 to 2105 nm 295 to 2685 nm sensor to measure albedo.
Directional (Cosine) Less than 30 W m⁻² Less than 20 % for an-
Response at 80° solar zenith gles between 0 and 60°
SP-510
Temperature Response Less than 5 % from -15 to 45 C
Zero Offset A Less than 5 W m⁻²; Less than 10 W m⁻² (heated)
Zero Offset B Less than 5 W m⁻² SP-510
Operating Environment -50 to 80 C; 0 to 100 % relative humidity
780 Ω, 15.4 mA current draw and 185 mW
Heater
power requirement at 12 V DC
Uncertainty in Daily Total Less than 5 %
Dimensions 23.5 mm diameter, 28.7 mm height
SP-610
Mass 90 g 100 g
apogeeinstruments.com 5
Silicon-cell Pyranometers and Meters
Accurate and stable global shortwave radiation measurement
Proven Design
An accurate, cosine-corrected patented
design sheds water and dirt for a self-cleaning
performance. A heated option (SP-230) is
available with a 0.2 W heater to minimize errors
caused by dew, frost, or snow.
Top: Mean relative response of ten
Case Study Apogee model SP-110 pyranometers and
Korea Water Resource Corporation uses a mean relative response of four reference
configuration of eight Apogee SP-110 Silicon- pyranometers (Kipp & Zonen models
cell Pyranometers and weather data from wind, CM11, CMP11, CM21; Hukseflux model
temperature, and humidity sensors to find the SR20) compared to ideal angular (cosine)
best location for floating photovoltaic power response in a vacuum. Differences from the
plants. ideal response are caused by atmospheric
attenuation of solar radiation, which
increases as solar zenith angle increases.
Bottom: Mean angular response (error as
function of solar zenith angle) of ten Apogee
model SP-110 pyranometers, where the
mean of the four reference pyranometers
was used as the reference.
6 apogeeinstruments.com
Sensor Models Meter Models
SP-230 SP-110 0 to 350 mV Self-powered MP-100 Integrated Sensor
SP-230 0 to 350 mV All-season Heated MP-200 Separate Sensor
SP-212 0 to 2.5 V Amplified
SP-214 4 to 20 mA Amplified
SP-215 0 to 5 V Amplified
SP-420 USB Digital
SP-421 SDI-12 Digital MP-200
SP-422 Modbus Digital
SP-110-SS SP-212-SS SP-214-SS SP-215-SS SP-230-SS SP-420 SP-421-SS SP-422-SS
ISO 9060:2018 Class C
7 to 24 V DC, maxi-
12 V DC for heater
3.3 to 24 V DC; mum current draw of 5.5 to 24 V DC;
Power Supply Self-powered with a current draw — — 5.5 to 24 V
current draw 10 μA 22 mA (2 mA quies- current draw 10 μA
of 15.4 mA
cent current draw)
Output (sensitivity) 0.2 mV per W m⁻² 2 mV per W m⁻² 0.008 mA per W m⁻² 4 mV per W m⁻² 0.2 mV per W m⁻² USB SDI-12 Modbus
Calibration Factor (reciprocal 125 W m⁻² per mA,
5 W m⁻² per mV 0.5 W m⁻² per mV 0.25 W m⁻² per mV 5 W m⁻² per mV Custom for each sensor and stored in firmware
of output) 4 mA offset
Calibration Uncertainty ±5%
Measurement Repeatability Less than 1 %
Long-term Drift Less than 2 % per year
Non-linearity Less than 1 % up to 2000 W m⁻²
Software updates
Response Time Less than 1 ms Less than 0.6 s 320 ms
every second
Field of View 180°
Spectral Range 360 to 1120 nm
Directional (Cosine) Response ± 5 % at 75° zenith angle
Temperature Response 0.04 ± 0.04 % per C
Operating Environment -40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to 30 m
23.5 mm diameter;
Dimensions 24 mm diameter, 33 mm height
44 mm height
Mass (with 5 m of cable) 90 g 177 g
apogeeinstruments.com 7
Pyrgeometers
Incoming and outgoing longwave radiation measurement
SL-510-SS SL-610-SS
(Upward-Looking) (Downward-Looking)
0.12 mV per W m⁻² (variable from sensor to sensor,
Sensitivity
typical value listed)
Calibration factor 8.5 W m⁻² (variable from sensor to sensor, typical
(Reciprocal of Sensitivity) value listed)
Calibration Uncertainty ±5%
Accurate, Stable Measurements
Long-term drift is less than 2 % per year.
Measurement Range -200 to 200 W m⁻² (net longwave irradiance)
Measurement Rugged, Self-Cleaning Housing
Less than 1 % Features a rugged anodized aluminum body and fully-potted
Repeatability
electronics.
Long-term Drift Less than 2 % change in sensitivity per year
Non-linearity Less than 1 % On-board Heater
Response Time Less than 0.5 s A 0.2 W heater keeps water off the sensor and minimizes errors caused
by dew, frost, rain, or snow blocking the radiation path.
Field of View 150°
Spectral Range 5 to 30 μm Unique Design
Temperature Response Less than 5 % from -15 to 45 C The filter, blackbody thermopile detector and thermistor (to measure
detector temperature) are all contained in a compact housing that
Window Heating Offset Less than 10 W m⁻²
provides improved thermal coupling.
Zero Offset B Less than 5 W m⁻²
Tilt Error Less than 0.5 % Upward and Downward Option
Uncertainty in Daily Total ±5%
Temperature Sensor 30 kΩ thermistor, ± 1 C tolerance at 25 C
Output from Thermistor 0 to 2500 mV (typical, other voltages can be used)
Input Voltage Requirement 2500 mV excitation (typical, other voltages can be
for Thermistor used)
780 Ω, 15.4 mA current draw and 185 mW power
Heater
requirement at 12 V DC
Dimensions 27.5 mm height, 23.5 mm diameter SL-610
Mass 90 g 100 g
SL-510
8 apogeeinstruments.com
Photometric Sensors
Measure light with the sensitivity of the human eye
NEW!
SE-100-SS SE-202-SS SE-205-SS SE-212-SS SE-215-SS
Overview
Power Supply ― 3.3 to 24 V DC 5.5 to 24 V DC 3.3 to 24 V DC 5.5 to 24 V DC Apogee photometric radiometers use a
Current Draw ― maximum of 10 μA photodetector with a spectral response that closely
Output (sensitivity) 0.001 mV per lux 0.5 mV per Iux 1 mV per Iux 0.0167 mV per lux 0.033 mV per lux
matches the sensitivity of the human eye to light.
The sensors include a diffuser to properly weight
Calibration Factor 1000 Iux per mV 2 Iux per mV 1 lux per mV 60 lux per mV 30 lux per mV light incident from any angle. Apogee photometric
Calibration sensors provide highly accurate illuminance
±5%
Uncertainty measurements (lux or footcandles) at an affordable
Output Range 0 to 200 mV 0 to 2500 mV 0 to 5000 mV 0 to 2500 mV 0 to 5000 mV price.
Measurement
Range
0 to 200 kIux 0 to 5000 lux 0 to 150000 lux Models
Apogee currently offers one analog model
Measurement (SE-100) available for sale with other outputs and
Less than 0.5 %
Repeatability
measurement ranges coming soon.
Long-term Drift Less than 2 % per year
Non-linearity Less than 1 %
Spectral Response
Response Time Less than 1 ms
Spectral Range CIE 1931 luminous efficiency function
Relative Response to Photons
Field of View 180°
Directional (Cosine)
± 2 % at 45°, ± 5 % at 75°
Response
Temperature
Less than 0.1 % per C
Response
Operating
-40 to 70 C; 0 to 100 % relative humidity
Environment
Dimensions 30.5 mm diameter, 36.6 mm height
Mass 51 g
Wavelength [nm]
Cable 5 m of shielded, twisted-pair wire with TPR jacket and stainless steel connector
apogeeinstruments.com 9
Field Spectroradiometers
Easy-to-use, cost-effective
SS-110 SS-120
Wavelength Range 340 to 820 nm 635 to 1100 nm
Wavelength Measurement Interval 1 nm
Wavelength Resolution 3 nm (full width half maximum)
Wavelength Accuracy ± 0.5 nm
Wavelength Repeatability ± 0.2 nm
Analog to Digital Resolution 14 bit Wavelength Range Options
340 to 820 nm (SS-110) and 635 to 1100 nm
Signal to Noise Ratio 1500:1 (at maximum signal) (SS-120) wavelengths.
Stray Light ≤ 0.25 % at 590 nm ≤ 0.25 % at 850 nm
Dark Noise ≤ 3 counts Complete Package
Includes spectroradiometer and cosine-
Integration Time Range 10 ms to 10 s corrected detector mounted in the housing,
Measurement Sensitivity
Greater than 10 % of max sensitivity for Greater than 10 % of max sensitivity for 180° FOV head, AL-200 leveling plate, USB
wavelengths greater than 380 nm wavelengths less than 1030 nm cable for computer interface, carrying case,
Less than 1 % (wavelengths greater than Less than 1 % (wavelengths less than and USB drive with required drivers and
Measurement Repeatability
400 nm) 1020 nm) software (Windows compatible, XP and later;
Directional (Cosine) Response ± 5 % at 75° zenith angle Mac compatible, 10.9 and later).
Field of View 180° (upward-facing); 25° or 150° (downward-facing)
Unattended Field Measurements
Operating Environment -20 to 70 C; 0 to 100 % relative humidity Spectroradiometer is small and lightweight
Temperature Response -0.1 ± 0.1 % per C with all measurement components contained
Irradiance Calibration Uncertainty ±5% in the durable,
waterproof
Current Draw 190 mA during measurement and when idle (USB) housing. Power
Power Requirement 1 W (USB) consumption
Interface Cable 5 m PVC jacket with USB (for computer) is low (1 W
at 12 V DC)
Apogee Spectrovision (Windows compatible, XP and later; Mac compatible, 10.9 and
Software
later)
with automatic
temperature
Operating Environment -20 to 70 C, 0 to 100 % relative humidity compensation.
Thread Size (for Mounting) ¼"-20
Dimensions 89.3 mm height, 50.8 mm width, 38.1 mm depth
Mass 300 g
Warranty 1 year against defects in materials and workmanship
10 apogeeinstruments.comLab Spectroradiometers
Absolute spectral measurement across a wide wavelength range
PS-100 PS-200 PS-300
Irradiance Calibration
350 to 1000 nm 300 to 850 nm 300 to 1000 nm
Range
Wavelength Sensitivity 350 to 1150 nm 190 to 850 nm 220 to 1100 nm
Wavelength Resolution 1 nm 0.85 nm 1.5 nm
Detector Type CCD, 2048 pixel
Three Wavelength Options
350 to 1000 nm, 300 to 850 nm, or 300 to 1000 nm.
Holographic & Holographic and aberration-corrected,
Grating Type
Ruled, 600 g/nm 590 g/nm Complete Package
Digitizer 16-bit Includes spectroradiometer, two meter fiber-optic cable, cosine-
corrected detector, AL-200 leveling plate, USB cable, USB drive
Signal to Noise Ratio 1000:1
with required drivers and software (compatible with all 32-bit and
Stray Light
0.1 % at 435 nm, 0.02 % at 435 nm, 0.02 % at 435 nm, 64-bit Windows operating systems), and shoulder bag (functions
0.5 % at 600 nm 0.2 % at 200 nm 0.2 % at 220 nm as a carrying case and field measurement pack). A reflectance
Measurement probe and reflectance standard are available as accessories.
Less than 1 %
Repeatability
Irradiance Calibration
Portable Lab and Field Measurements
± 10 % Features a small design with a rugged housing and no moving
Uncertainty
parts. Spectroradiometer is powered through the USB port on a
Detector Integration
1 ms to 65 s computer allowing mobile measurements.
(Exposure) Range
Directional (Cosine)
± 5 % at 80° zenith angle
Response
Software Windows compatible, included
Computer Interface USB 2.0
PS-200/
Power Requirement 100 mA at 5 V DC, supplied via USB cable PS-300
PS-100
Operating Temperature 0 to 60 C
Optical Cable 2 m armored fiber-optic
25 mm x 75 mm
Base Unit Size 69 mm x 100 mm x 150 mm
x 125 mm
Mass 500 g 900 g
Warranty 1 year against defects in materials and workmanship
apogeeinstruments.com 11Quantum Sensors and Meters
The photosynthetically active radiation measurement tool of choice for lighting researchers
Original Sensor
NEW Color
for 2019! Full-spectrum Sensor
Original (sun Original (elec- Full-Spectrum
calibration) tric calibration) (SQ-500 Series)
Apogee Instruments Quantum Sensors are the Radiation Source PPFD Error [%] PPFD Error [%] PPFD Error [%]
tool of choice for researchers and agricultural Sun (Clear Sky) 0.0 -15.0 0.0
professionals measuring photosynthetically active
radiation (PAR) all over the world. Apogee offers Sun (Cloudy Sky) 0.1 -14.9 0.1
two types of quantum sensors: a Full-spectrum Reflected from Grass Canopy 4.5 -10.5 -0.3
Quantum (previously gold) and Original Quantum
Sensor. Consult our spectral response graph to Transmitted below Wheat Canopy 4.5 -10.5 0.1
decide which model is right for your application. Cool White Fluorescent (T5) 14.9 0.0 0.1
Metal Halide 12.2 -2.8 0.9
Ceramic Metal Halide -1.1 -16.1 0.3
High Pressure Sodium 15.2 0.2 0.0
Blue LED (448 nm peak, 20 nm full-width half-max) 4.5 -10.5 -0.7
Green LED (524 nm peak, 30 nm full-width half-max) 23.8 8.8 3.2
Red LED (635 nm peak, 20 nm full-width half-max) 17.6 2.6 0.8
Red LED (667 nm peak, 20 nm full-width half-max) -47.1 -62.1 2.8
Red, Blue LED Mixture (84 % Red, 16 % Blue) -57.8 -72.8 -3.9
Red, White LED Mixture -20.5 -35.5 -2.0
Cool White LED 11.7 -3.3 0.5
Warm White LED 6.1 -8.9 0.2
Above: Spectral response of original quantum sensor (black)
and full-spectrum quantum sensor (blue) compared to Neutral White LED 9.9 -5.1 0.5
defined response of plants to radiation (dashed).
Blue Plus T5 (cool white fluorescent) 8.2 -6.8 -0.1
12 apogeeinstruments.comMQ-500
MQ-200
Accurate, Stable Measurements Original Sensor Models Calibration Case Study
Cost-effective, original quantum sensors SQ-110 Self-powered 0 to 800 mV Sun The Center for Andean Forestry Research
work well for broadband radiation SQ-120 Self-powered 0 to 800 mV Electric and Extension (CIEFAP) studies forest
sources (sun, and high-pressure sodium, SQ-212 Amplified 0 to 2.5 V Sun systems and land suitable for forestry
metal halide, cool white fluorescent SQ-222 Amplified 0 to 2.5 V Electric in the Andean region of Patagonia,
lamps), while full-spectrum sensors SQ-214 Amplified 4 to 20 mA Sun Argentina. The study is determining the
are good for all light sources, including SQ-224 Amplified 4 to 20 mA Electric % of PAR related to survival and initial
LEDs. Offers a self-cleaning, cosine- SQ-215 Amplified 0 to 5.0 V Sun growth of differing species. CIEFAP
corrected head that is fully-potted for a SQ-225 Amplified 0 to 5.0 V Electric measured under canopy PAR using an
waterproof design. SQ-420 USB Sun/Electric Apogee MQ-301 line quantum sensor.
SQ-421 SDI-12 Sun/Electric
Output Options SQ-422 Modbus Sun/Electric
Sensors are available in multiple analog
options, attached to a hand-held meter Original Meter Models
with a digital output, and as a "smart" MQ-100 Integrated Sensor
sensor that uses USB communication MQ-200 Separate Sensor
and custom software. MQ-303 Line Quantum Meter - 3 Sensors
MQ-306 Line Quantum Meter - 6 Sensors
Full-Spectrum Models MQ-301 Line Quantum Meter - 10 Sensors
SQ-500 Self-powered 0 to 40 mV
SQ-512 0 to 2.5 V Line Quantum Models (0 to 800 mV)
SQ-514 4 to 20 mA SQ-313 3 Sensor Sun Calibration
SQ-515 0 to 5 V SQ-316 6 Sensor Sun Calibration
SQ-520 USB SQ-311 10 Sensor Sun Calibration
SQ-521 SDI-12
SQ-522 Modbus
MQ-500 Meter, separate sensor
MQ-501 Meter, attached sensor
MQ-510 Meter, underwater calibration SQ-311
apogeeinstruments.com 13Full-Spectrum Quantum Sensors SQ-500
Accurate PAR measurements under all light sources, including LEDs
All other & SQ-520
models
SQ-500-SS SQ-512-SS SQ-514-SS SQ-515-SS SQ-520 SQ-521-SS SQ-522-SS
Uses a 5 V USB power
Power Supply Self-powered 3.3 to 24 V DC 12 to 24 V DC 5.5 to 24 V DC source and has a 2.1 mA 5.5 to 24 V DC 5.5 to 24 V DC
current draw when logging
1.4 mA (quiescent), 20 mA
Current Draw ― At 12 V is 57 μA maximum of 20 mA At 12 V is 57 μA ―
1.8 mA (active) maximum
Output (sensitivity) 0.01 mV per μmol m⁻² s⁻¹ 0.625 mV per μmol m⁻² s⁻¹ 0.004 μmol m⁻² s⁻¹ per mA 1.25 mV per μmol m⁻² s⁻¹ ― ― ―
Resolution ― ― ― ― 0.1 μmol m⁻² s⁻¹ ― ―
Calibration Factor Custom for each sensor
100 μmol m⁻² s⁻¹ per mV 1.6 μmol m⁻² s⁻¹ per mV 250 μmol m⁻² s⁻¹ per mA 0.8 μmol m⁻² s⁻¹ per mV
(reciprocal of output) and stored in the firmware
Calibration Uncertainty ±5%
Output Range 0 to 40 mV 0 to 2.5 V 4 to 20 mA 0 to 5 V USB SDI-12 Modbus
Measurement
Less than 0.5 % Less than 1 % Less than 0.5 % Less than 1 % Less than 0.5 % Less than 1 %
Repeatability
Long-term Drift Less than 2 % per year
Non-linearity Less than 1 % (up to 4000 μmol m⁻² s⁻¹)
Software updates every
Response Time Less than 1 ms Less than 0.6 s 320 ms
second
Field of View 180°
Spectral Range 389 to 692 nm ± 5 nm (wavelengths where response is greater than 50 %)
Spectral Selectivity Less than 10 % from 412 to 682 nm ± 5 nm
Directional (Cosine)
± 2 % at 45°, ± 5 % at 75° zenith angle
Response
Temperature Response -0.11 ± 0.04 % per C
Operating Environment -40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m
24 mm diameter, 37 mm 24 mm diameter, 37 mm 30.5 mm diameter,
Dimensions 30.5 mm diameter, 36.6mm height
height height 36.6 mm height
Mass 100 g (5 m of lead wire) 51 g 100 g (5 m of lead wire) 51 gOriginal Quantum Sensors SQ-110
Measure photosynthetically active radiation for broadband light sources
SQ-110/120-SS SQ-212/222-SS SQ-214/224-SS SQ-215/225-SS SQ-300 Series SQ-420 SQ-421-SS SQ-422-SS
7 to 24 V DC with a
Uses a 5 V USB power
3.3 to 24 V DC; maximum current draw 5.5 to 24 V DC;
Power Supply Self-powered Self-powered source and has a 2.1 mA 5.5 to 24 V DC
current draw 10 μA of 22 mA (2 mA current draw 10 μA
current draw when logging
quiescent current draw)
0.2 mV per 0.625 mV per 0.004 mA per 1.25 mV per 0.2 mV per
Output (sensitivity) ― ― ―
μmol m⁻² s⁻¹ μmol m⁻² s⁻¹ μmol m⁻² s⁻¹ μmol m⁻² s⁻¹ μmol m⁻² s⁻¹
Calibration
5 μmol m⁻² s⁻¹ 1.6 μmol m⁻² s⁻¹ 250 μmol m⁻² s⁻¹ 0.8 μmol m⁻² s⁻¹ 5 μmol m⁻² s⁻¹ Custom for each sensor and stored
Factor (reciprocal
per mV per mV per mA per mV per mV in the firmware
of output)
Calibration for
±5%
Uncertainty
Output Range 0 to 800 mV 0 to 2.5 V 4 to 20 mA 0 to 5 V 0 to 800 mV USB SDI-12 Modbus
Measurement
Less than 0.5 % Less than 1 %
Repeatability
Long-term Drift Less than 2 % per year
Non-linearity Less than 1 % (up to 4000 μmol m⁻² s⁻¹)
Software updates every
Response Time Less than 1 ms Less than 0.6 s 320 ms
second
Field of View 180°
Spectral Range 410 to 655 nm (wavelengths where response is greater than 50 % maximum)
Spectral Selectivity Less than 10 % from 469 to 655 nm
Directional
± 5 % at 75° zenith angle
(Cosine) Response
Temperature
0.06 ± 0.06 % per C
Response
Operating
-40 to 70 C; 0 to 100 % relative humidity; can be submerged in water up to 30 m
Environment
500 x 15 x 15 mm;
24 mm diameter; 33 mm 23.5 mm diameter,
Dimensions 24 mm diameter, 33 mm height SQ-311/321: 700 x
height 44 mm height
15 x 15 mm
90 g (with 5 m of 275 g;
Mass 100 g (with 5 m of lead wire) Sensor head weighs 90 g 117 g (with 5 m of lead wire)
lead wire) SQ-311/321: 375 gPAR-FAR Sensors
Two-band radiometer to measure PAR and Far Red radiation
NEW!
S2-141-SS S2-441-SS
Power Supply Self-powered 5.5 to 24 V DC
1.4 mA (quiescent),
Current Draw —
1.8 mA (active) Overview
0.01 mV per μmol m⁻² s⁻¹ (PAR) Apogee PAR-FAR sensors combine two photodetectors that measure
Output (sensitivity)
0.02 mV per μmol m⁻² s⁻¹ (Far Red)
— photosynthetically active and far red radiation. The PAR sensor is the
Calibration Factor 100 μmol m⁻² s⁻¹ per mV (PAR) Custom for each sensor and
same as the Apogee model SQ-500 full-spectrum quantum sensor and
(reciprocal of sensitivity) 50 μmol m⁻² s⁻¹ per mV (Far Red) stored in firmware
is designed to measure photosynthetic photon flux density (PPFD,
400-700 nm). The Far Red sensor is a quantum sensor that measures
Calibration Uncertainty ±5% photons in the 700-760 nm range.
0 to 40 mV (PAR)
Output Range SDI-12
0 to 20 mV (Far Red) Typical Applications
Measurement • Monitoring plant light environments
Less than 1 %
Repeatability • Research plant
Long-term Drift Less than 2 % per year morphogenic activity
• Photobiology studies
Less than 1 % (up to 4000 μmol m⁻² s⁻¹) (PAR)
Non-linearity
Less than 1 % (up to 1000 μmol m⁻² s⁻¹) (Far Red)
Key Features
Response Time Less than 1 ms Less than 0.6 s Digital SDI-12 output is
Field of View 180° standard with analog
Spectral Ranges 389 to 692 nm ± 5 nm (PAR) options available.
(see graph to the right) 700 to 760 nm ± 5 nm (Far Red) A domed diffuser
Directional (Cosine)
promotes self-cleaning
Response
± 2 % at 45º; ± 5 % at 75º zenith angle to minimize errors from
dust and debris.
Temperature Response Less than 0.1 % per C
Housing Anodized aluminum body with acrylic diffuser
IP Rating IP68
Above: Spectral response of PAR detector (blue) and
Operating Environment -40 to 70 C; 0 to 100 % relative humidity
Far Red detector (red) compared to defined response of
Dimensions 30.5 mm diameter, 36.6 mm height plants to radiation (dashed).
Mass 51 g
16 apogeeinstruments.comRed - Far-Red Sensors
Two-band radiometer to measure Red / Far-Red ratio
NEW!
S2-131-SS S2-431-SS
Power Supply Self-powered 5.5 to 24 V DC
1.4 mA (quiescent),
Current Draw —
1.8 mA (active) Overview
0.01 mV per μmol m⁻² s⁻¹ Apogee Red - Far-Red sensors combine two photodetectors
Output (sensitivity) —
(Red and Far Red) designed to measure wavelength ranges and peaks that approximate
Calibration Factor 100 μmol m⁻² s⁻¹ per mV Custom for each sensor and phytochrome absorption. The red / far-red ratio can be calculated from
(recipricol of sensitivity) (Red and Far Red) stored in firmware these measurements. Red and far-red wavelengths are of particular
interest because they influence photosynthetic and morphogenic
Calibration Uncertainty ±5%
activity. Phytochrome pigments sensitive to varying ratios of red
Output Range 0 to 4 mV (Red and Far Red) SDI-12 and far-red light provide information to the plant about its light
Wavelength Ranges 645 to 665 nm ± 5 nm (Red) environment.
(see graph to the right) 720 to 740 nm ± 5 nm (Far Red)
Measurement Range 0 to 400 μmol m⁻² s⁻¹ (Red and Far Red)
Typical Applications
• Monitoring plant
Measurement
Less than 1 %
light environments
Repeatability • Research plant
Long-term Drift Less than 2 % per year morphogenic activity
• Photobiology studies
Response Time Less than 1 ms Less than 0.6 s
Non-linearity Less than 1 % (up to 400 μmol m⁻² s⁻¹) (Red and Far Red) Key Features
Field of View 180° Digital SDI-12 output
Directional (Cosine)
is standard with analog
Response
± 2 % at 45º; ± 5 % at 75º zenith angle options available.
A domed diffuser
Temperature Response Less than 0.1 % per C promotes self-cleaning
Housing Anodized aluminum body with acrylic diffuser to minimize errors from
IP Rating IP68 dust and debris.
Operating Environment -40 to 70 C; 0 to 100 % relative humidity Above: Spectral response of Red detector (red)
Dimensions 30.5 mm diameter, 36.6 mm height and Far Red detector (maroon).
Mass 51 g
apogeeinstruments.com 17NDVI and PRI Sensors
Two-band radiometers inform environment and plant health
NEW!
NDVI PRI
S2-411-SS S2-412-SS S2-421-SS S2-422-SS
(Upward-Looking) (Downward-Looking) (Upward-Looking) (Downward-Looking)
Overview
Calibration Factor Apogee two-band radiometers combine two
Custom for each sensor and stored in firmware
(recipricol of sensitivity) photodetectors that measure specific wavelength
Calibration Uncertainty ±5% ranges. They are designed to continuously measure
reflectance for calculation of the normalized difference
Output Range SDI-12
vegetation index (NDVI) or photochemical reflectance
Power Supply 5.5 to 24 V DC index (PRI) of plant canopies. NDVI provides an
Red detector = 650 nm with 10 nm FWHM* Green detector = 532 nm with 10 nm FWHM* approximation of canopy chlorophyll content and leaf
Wavelength Ranges
NIR detector = 810 nm with 10 nm FWHM* Yellow detector = 570 nm with 10 nm FWHM* area, and is often used to monitor green-up in the spring
Measurement Range 2x full sunlight and senescence in the fall. PRI is related to canopy light
use efficiency and is often used in studies of canopy
Measurement
Less than 1 % photosynthesis and response to stress.
Repeatability
Long-term Drift Less than 2 % per year Key Features
Response Time Less than 0.6 s Digital SDI-12 output is standard with analog options
Field of View 180° 40° 180° 40°
available. A domed diffuser promotes
self-cleaning to minimize errors from
Directional (Cosine)
± 2 % at 45º; ± 5 % at 75º zenith angle dust and debris.
Response
Temperature Response
Housing
Less than 0.1 % per C
Anodized aluminum body with acrylic diffuser
ρNIR − ρRed
NDVI =
IP Rating IP68 ρNIR + ρRed
Operating Environment -40 to 70 C; 0 to 100 % relative humidity
30.5 mm diameter, 23.5 mm diameter, 30.5 mm diameter, 23.5 mm diameter, 40
ρGreen − ρYellow
Dimensions
36.6 mm height 40 mm height 36.6 mm height mm height
110 g (with 5 m of 110 g (with 5 m of
Mass 51 g 51 g
PRI =
*FWHM = full-width half-maximum
cable) cable)
ρGreen + ρYellow
18 apogeeinstruments.comChlorophyll Concentration
Measure chlorophyll not SPAD. U.S. Patent No. 9733179
Meter
MC-100
Default Display Unit μmol of chlorophyll per m² of leaf surface
Optional Display Units CCI, SPAD
63.6 mm² (9 mm standard diameter),
Measurement Area
19.6 mm² (5 mm diameter with reducer) Linear Output
Calibrated to measure chlorophyll concentration
± 10 μmol m⁻² chlorophyll concentration in leaves with units of μmol of chlorophyll per m².
Resolution
using generic equation This eliminates the problems with relative indexes
Linearity ±1% of chlorophyll, like the SPAD index, which is not
Repeatability ±1% linearly related to chlorophyll concentration.
Sample Acquisition Time Less than 3 s Non-destructive Measurements
8 MB for up to 160,000 data The meter measures the ratio of red and near infrared transmittance with
Storage Capacity measurements; 94,000 data a sample rate of less than 3 seconds, resulting in measurements that are
measurements with GPS data entries non-destructive and nearly instantaneous. This facilitates rapid measurement of
50 mm by 15 mm graphic display screen, multiple leaves and monitoring of the same leaves over time.
User Interface 8 push buttons for control and data
manipulation See our website for 25+ available species-specific settings
Mini-B USB port provided for main data
Data Output
transfer
RS-232 port (GPS location data is saved
External GPS Option
with each measurement)
Operating Temperature 0 to 50 C
Temperature compensated source and
Temperature Drift
detector circuitry over full range
Power Requirement Standard 9 V DC alkaline battery
152 mm length, 82 mm width, 25 mm
Dimensions
height
Mass 210 g Above: Older chlorophyll indexes such as CCI (left) and SPAD (right) do not have a linear
relationship to chlorophyll concentration. Parry C., Blonquist Jr., J.M., & Bugbee, B. 2014.
1 year against defects in materials and
Warranty Plant, Cell and Environment 37:2508-2520.
workmanship
apogeeinstruments.com 19Infrared Radiometers
High-accuracy, non-contact surface temperature measurement
in harsh environmental conditions MI-2H0
High Accuracy Analog Models
Uncertainty of ± 0.2 C from -30 to 65 C SI/SIF-111-SS Standard FOV
when the sensor (detector) temperature SI/SIF-121-SS Narrow FOV
is within 20 C of the target. Radiometers SI-131-SS Ultra-Narrow FOV
are only sensitive from 8 to 14 μm SI/SIF-1H1-SS Horizontal FOV
(atmospheric window) to minimize the
influence of water vapor and CO2 on the Digital SDI-12 Models
measurement. SI-411-SS Standard FOV
Ultra Narrow Narrow Standard Horizontal SI-421-SS Narrow FOV
Four Field of View Options 14° 18° 22° 13° x 32° SI-431-SS Ultra-Narrow FOV
Three circular and one horizontal Si-4H1-SS Horizontal FOV
aperture.
Meter Models
Rugged Housing MI-210 Standard FOV
Anodized aluminum body with fully- MI-220 Narrow FOV
potted electronics. The outer radiation MI-230 Ultra-Narrow FOV
shield reduces thermal fluctuations. MI-2H0 Horizontal FOV
High Speed Options
Fast response (SIF) analog models have a
0.2 second response time.
Outputs
Analog and digital output options
include unamplified voltage and SDI-12
communication protocol, and an
attached hand-held meter with digital
readout. Above: Spectral response of Apogee SI-100 and
SI-400 infrared radiometers compared to atmospheric
transmittance and blackbody irradiance.
20 apogeeinstruments.comCase Studies
Apogee Instruments' SI-131 Infrared Radiometer was selected to be
part of a multi-sensor high throughput field phenotyping system for
soybean and wheat breeding by the University of Nebraska-Lincoln.
In València, Spain researchers at Universitat Politècnica de València
(UPV) selected Apogee Instruments' SI-411 Infrared Radiometer to be
part of an autonomous vineyard monitoring robot to generate maps of
temperature and vigor of the plants in real time.
All Models -SS SI-111 SI-121 SI-131 SI-1H1 SIF-111 SIF-121 SIF-1H1 SI-411 SI-421 SI-431 SI-4H1
Analog Model
Output (Difference ≈ 60 ≈ 40 ≈ 20 ≈ 15
≈ 40 μV per C ≈ 10 μV per C Digital Models (SDI-12)
between Target and μV per C μV per C μV per C μV per C
Detector)
Input Voltage 4.5 to 24 V DC with current draw of 1.5 mA (quiescent),
2500 mV thermistor excitation (typical, other voltages can be used)
Requirement 2.0 mA (active)
Analog Output from
0 to 2500 mV (typical, depends on input voltage) ―
Thermistor
Calibration
Uncertainty (-20 to
65 C), when target 0.2 C 0.3 C 0.2 C 0.3 C 0.2 C
and detector ΔT are
< 20 C
Calibration
Uncertainty (-40 to
80 C), when target 0.5 C 0.6 C 0.5 C 0.6 C 0.5 C
and detector ΔT are
> 20 C
Measurement
Less than 0.05 C
Repeatability
Long-term Drift Less than 2 % change in slope per year when germanium filter is maintained
Field of View 32° horizontal; 32° horizontal; 32° horizontal;
22° 18° 14° 22° 18° 22° 18° 14°
(half-angle) 13° vertical 13° vertical 13° vertical
0.6 s, time for detector signal to reach 95 % following a 0.2 s, time for detector signal to reach 95 % 0.6 s, time for detector signal to reach 95 % following a
Response Time
step change following a step change step change
Spectral Range 8 to 14 μm; atmospheric window
Operating
-55 to 80 C; 0 to 100 % relative humidity (non-condensing)
Environment
Dimensions 23 mm diameter, 60 mm length
Mass 190 g (with 5 m of lead wire)
apogeeinstruments.com 21Fan-Aspirated Radiation Shield
Accurate measurement of air temperature with minimal power draw
Optimized Design for Efficiency and Durability
Case Study A curved inlet redirects air into the shield and funnels it past the sensing area,
The Virginia Tech which allows for a lower power requirement than other fan-aspirated shields on
Department of Geography the market. The fan has an ingress protection rating of IP55, which minimizes
has begun the development moisture and dust ingress. Fan speed and power can be further reduced when
of regional mountaintop environmental conditions warrant.
mesonets in the Appalachian
Mountains of Virginia and Sensor Compatibility
West Virginia. The TS-100 The shield accommodates multiple sensor options: air temperature sensors,
is being used to house air temperature/relative humidity probes, or combinations of both categories.
temperature sensors for For maximum accuracy we recommend redundant measurements of air
each installation. temperature.
See our website for available sensor packages
TS-100
Difference Among Individual
Less than 0.1 C
Replicate Shields
6 m s⁻¹ at full-speed;
Aspiration Rate
3 m s⁻¹ at half-speed
Fan Input Voltage Requirement 10.8 to 13.2 V DC
80 mA at full-speed;
Fan Current Draw
25 mA at half-speed
IP Rating IP55
Dimensions 220 mm height, 270 mm diameter Left: Naturally-aspirated shields are subject to significant measurement errors when wind speeds are less than 3
m s⁻¹. Errors increase when snow covers ground surface. Right: The performance of Apogee (model TS-100) and
R.M. Young (model 43502) fan-aspirated shields relative to a Met One (model 076B) fan-aspirated shield.
Mass 840 g
22 apogeeinstruments.comHumidity Probe
Improved version of the popular EE08 probe from E + E Elektronik
EE08-SS
Input Voltage 7 to 30 V DC
Current Draw Less than 1.3 mA Overview
Start-up Time 2s The EE08-SS air temperature/relative humidity probe is
manufactered by E + E Elektronik in Austria. The version sold by
Housing Polycarbonate, IP65 Apogee Instruments includes a stainless steel connector and custom
cable with a ninety degree connector that optimizes the fit of the
Filter Stainless steel wire mesh, 30 micron pore size probe inside the Apogee TS-100 fan-aspirated radiation shield.
The EE08-SS offered by Apogee also includes a proprietary coating
Connector M12, IP67
from E + E for the relative humidity sensing element that provides
Dimensions 83 mm length, 12 mm diameter maximum long-term stability.
Mass with 5 m Cable 270 g Fan Aspiration
Fan aspiration of humidity probes can improve accuracy over passive
Operating Environment -40 to 60 C; 0 to 100 % relative humidity shields. The TS-100 shield (pictured) is an excellent choice for
M12 connector (IP67 rating) to interface to sensor accomplishing this and is available at a special package price when
housing, 5 m of four conductor, shielded, twisted-pair wire, purchased together. To see these sensor packages, please visit our
Cable website.
white TPR jacket (high water resistance, high UV stability,
flexibility in cold conditions), pigtail lead wires
Temperature Measurement Relative Humidity Measurement
Sensor PT1000 (Class A) Sensor Capacitance Chip
TS-120
Measurement Range -40 to 60 C Measurement Range 0 to 100 % Fan with EE08-SS
Output Signal Range 0 to 2.5 V DC Output Signal Range 0 to 2.5 V DC
± 2 % from 0 to 90 %;
Accuracy at 20 C ± 0.2 C Accuracy at 20 C
± 3 % from 90 to 100 %
Long-term Stability Less than 0.1 C per year Temperature Response Less than -0.05 % per C
Long-term Stability Less than 1 % per year
Time Constant Less than 30 s
Time Constant Less than 30 s
apogeeinstruments.com 23Temperature Sensors Barometric
Wide measurement range of -50 to 70 C Pressure Sensor
ST-200
ST-110
Models ST-300 Sensor stability
The ST-100 has a waterproof housing and is designed for Long-term non-stability has been measured continuously
measuring soil and water temperature. The ST-110 minimizes ST-100
indoors and in natural conditions (with sensors mounted
solar load and thermal conduction to accurately measure air inside a datalogger enclosure) for multiple sensors and is
temperature. The ST-200 measures delicate or small surfaces less than 0.5 % per year.
with a fast response time. The ST-300 (PRT) minimizes solar load
and thermal mass.
SB-100
ST-100 ST-110 ST-200 ST-300 Measurement Range 15 to 115 kPa (approximate)
Measurement Range -50 to 70 C
Maximum Pressure 400 kPa (exposure beyond limit may
0.1 C (0 to 70 C) Exposure permanently damage sensor)
Measurement 0.1 C (0 to 70 C) 0.2 C (0 to 70 C) 0.1 C (-40 to 60 C),
0.2 C (-25 to 0 C)
Uncertainty 0.15 C (-40 to 0 C) 0.4 C (-50 to 0 C) 1/10 DIN 45.9 mV per kPa; 0.459 mV per 0.01 kPa
0.4 C (-50 to -25 C) Sensitivity
(approximate)
Measurement
Less than 0.05 C Less than 0.01 C Less than 0.05 C Less than 0.01 C 0.0218 kPa per mV (generic slope; reciprocal of
Repeatability Calibration Factor
sensitivity) and 11.4 kPa (generic intercept)
Long-term Drift Less than 0.02 C per year Less than 0.05 C per year
Measurement Uncertainty ± 1.5 % (with generic calibration coefficients)
Equilibration Time 30 s 4s 1s 15 s
Measurement Repeatability Less than 0.1 %
Less than 0.01 C (typical, assuming
Less than 0.01 C (typical, assuming pulsed excitation of 2.5 V DC), Non-linearity Less than 1 %
pulsed excitation of 2.1 V DC), 0.09 C
Self-heating 0.08 C at 5 C (max. assuming continuous input excitation of
at 5 C (max. assuming continuous input Warm-up Time 20 ms
2.5 V DC)
excitation of 2.1 V DC)
Response Time 1 ms
Operating
-50 to 70 C; 0 to 100 % relative humidity Less than 0.002 % per C for temperatures
Environment Temperature
greater than 0 C; -0.015 % per C for temperatures less
Input Voltage 2.1 V DC excitation Response
2.5 V DC excitation (recommended) than 0 C
Requirement (recommended)
-40 to 80 C; 0 to 100 % relative humidity
Output Voltage 16 to 27 mV DC (excitation of Operating Environment
0 to 2.5 V DC (assuming input excitation of 2.5 V DC) (non-condensing)
Requirement 2.1 V DC)
Input Voltage Requirement 5 V DC
0.21 mA DC (max. with steady
Current Draw 0.1 mA DC at 70 C (max. with steady excitation of 2.5 V DC) Output Voltage Range 0 to 5 V DC
excitation of 2.1 V DC)
100 mm length, 80 mm length, 25 mm length, 65 mm length, Current Draw 7 mA DC
Dimensions
6 mm diameter 4 mm diameter 1 mm diameter 3 mm diameter Dimensions 16 mm diameter
Mass 60 g 95 g Mass 5g
24 apogeeinstruments.comLeaf and Bud Temperature Sensor
Effective prediction of leaf and bud temperatures for orchards
Monitor Radiation Frost Events Wide Range, Accurate Measurements
On calm, clear nights leaf and bud temperatures can drop well below air temperature. Thermistor accuracy is ± 0.1 C across a range of
A radiation frost occurs when frost forms at the surface before the air temperature 0 to 70 C, providing accurate measurements at
reaches freezing. The Apogee leaf and bud temperature sensor is a combination of temperatures near zero where frost damage is likely
two high accuracy thermistors mounted in a single housing: sensors mimic a leaf and to occur.
bud, which provides estimates of leaf and bud temperatures to monitor radiation frost
events. Models
SF-110 Analog output
SF-421 Digital (SDI-12)
SF-110 SF-421
Measurement Range -50 to 70 C
Measurement Uncertainty 0.1 C (from 0 to 70 C), 0.2 C (from -25 to 0 C), 0.4 C (from -50 to -25 C)
Measurement Repeatability Less than 0.05 C
Less than 0.02 C per year (when used in non-condensing environments
Long-term Drift
where the annual average temperature is less than 30 C; continuously high
(Non-stability)
temperatures or continuously humid environments increase drift rate)
Equilibration Time 10 s
Less than 0.01 C (typical, assuming pulsed excitation
Self-heating of 2.5 V DC), 0.08 C at 5 C (maximum, assuming Less than 0.01 C
continuous input excitation of 2.5 V DC)
Operating Environment -50 to 70 C; 0 to 100 % relative humidity
Input Voltage Requirement 2.5 V DC excitation 5.5 to 24 V DC
Output Voltage Range 0 to 2.5 V DC (assuming input excitation of 2.5 V DC) ― Above: Leaf and bud temperature approximations measured with
an Apogee SF-110 compared to air temperature (top panel) and
0.1 mA DC (per thermistor) at 70 C (maximum, as- 0.6 mA (quiescent), wind speed (bottom panel) on the evening of April 28, 2012. Leaf
Current Draw
suming continuous input excitation at 2.5 V DC) 1.3 mA (active) and bud temperatures were both below air temperature after 8
P.M. and reached freezing 6 (leaf) and 4 (bud) hours before the air
Dimensions 570 mm length, 21 mm pipe diameter, 70 mm disk diameter
temperature.
Mass 400 g
apogeeinstruments.com 25Oxygen Sensors Simple Calibration
Output is proportional to oxygen concentration, which
enables on-site calibration in open air conditions.
AO-002
Flow
Through
and Meters Heated Detector
The protective membrane can be heated to prevent water
Head
Measure gaseous O2 in the from condensing and blocking the diffusion path. The heater
laboratory and porous media is typically used when sensors are deployed in soil or compost
where relative humidity is close to 100 %.
Output Options
Available as an analog version with unamplified voltage
output or digital version with SDI-12 communication
protocol. The sensor is also available attached to a hand-held
meter for easy spot measurements.
SO-110 SO-210 SO-411 SO-421
Input Voltage Requirement ― 5.5 to 24 V DC
Current Draw ― 0.6 mA (quiescent); 1.3 mA (active)
Input Voltage (heater and
12 V DC continuous (for heater); 2.5 V DC excitation (for thermistor)
thermistor)
Heater Current Draw 6.2 mA (74 mW power requirement when powered with 12 V DC source)
Thermistor Current Draw 0.1 mA DC at 70 C (maximum, assuming input excitation of 2.5 V DC)
Measurement Range 0 to 100 % O₂
Output (Sensitivity) 2.6 mV per % O₂ 0.6 mV per % O₂ ―
5 % of output at 20.95 2 % of output at
Output at 0 % O₂ ―
% O₂ 20.95 % O₂
Measurement Repeatability Less than 0.1 % of mV output at 20.95 % O₂
Non-linearity Less than 1 %
Long-term Drift
1 mV per year 0.8 mV per year 1 mV per year 0.8 mV per year
(Non-stability)
Oxygen Consumption Rate 2.2 μmol O₂ per day at 20.95 % O₂ and 23 C
Response Time 60 s 14 s 60 s 14 s
MO-200
Operating Environment -20 to 60 C; 0 to 100 % relative humidity (non-condensing); 60 to 140 kPa
Dimensions 32 mm diameter, 68 mm length
Mass 175 g (with 5 m of lead wire)
26 apogeeinstruments.comComing Soon
Weighing μCache Extended Quantum
Precipitation Gauge Bluetooth Memory Module To measure LEDs
66 mm
• Measures total precipitation from rain, • Stores and transmits real time data to iOS • Designed to read PFD under LEDs beyond
snow, sleet, and hail and Android devices the standard range of 400-700 nm (PAR)
• Algorithm to correct for temperature, • View and download data with • Low light version (0 to 200 μmol m⁻² s⁻¹)
evaporation, and vibration ApogeeConnect app for mobile devices coming soon
•SDI-12 output • Programmable sampling and logging SQ-620-SS
• Inlet options include: 8 inch (900 mm / intervals
Output Range 0 to 200 mV
35 inch capacity) or 200 cm² (1500 mm / • Large capacity: 9 months of 1 min data
60 inch capacity) openings to meet WMO • IP67 rated for harsh environments Measurement Range 0 to 4000 μmol m⁻² s⁻¹
and NWS recommendations • WiFi Cloud Gateway coming soon Calibration Factor 20 μmol m⁻² s⁻¹ per mV
• Heater option coming soon • Connects to multiple Apogee sensors:
340-1040 nm (wavelengths where re-
• Modbus output coming soon Infrared, Pyranometer, Quantum and Wavelength Range
sponse is greater than 50 % of max.)
more coming soon
Precipitation Gauge Comparisons
Apogee Connect
Above: Spectral response of extended LED range quantum
sensor (green) compared to the defined response of plants
to radiation (dashed).
apogeeinstruments.com 27Toll-Free: 877.727.6433
Intl.: +1.435.792.4700
721 W 1800 N
Logan, UT 84321, USA
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