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SQ-212: Amplified 0-2.5 Volt Sun Calibration Quantum Sensor

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  • Apogee Instruments SQ-212 Sun Calibrated Original Quantum Sensor
  • Apogee Instruments SQ-212 Sun Calibrated Original Quantum Sensor with included mounting screw.
  • Apogee Instruments Original Quantum Sensor-Bottom view with included mounting screw. Even with the screw removed, the sensor remains waterproof.
  • Apogee Instruments SQ-212 Sun Calibrated Original Quantum Sensor-Back view
  • Apogee Instruments SQ-212 Sun Calibrated Original Quantum Sensor-Close up
Price:
$205.00
SKU:
SQ-212


Product Description

The SQ-212 is an amplified original quantum sensor with a 0 to 2.5 V output that has been calibrated for use in sunlight. The sensor features a rugged, self-cleaning sensor housing design. Typical applications include PPFD (Photosynthetic Photon Flux Density) measurement over plant canopies in outdoor environments, greenhouses, and growth chambers, and reflected or under-canopy (transmitted) PPFD measurements in the same environments. Quantum sensors are also used to measure PAR (Photosynthetically Active Radiation)/PPFD in aquatic environments, including salt water aquariums where corals are grown.

 

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Technical Information
Sample Datalogger
Programs
Technical Drawings
Technical
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Technical Information
Technical
Information

Specifications

Power Supply
5 to 24 V DC with a nominal current draw of 300 µA
Sensitivity
1.0 mV per µmol m-2 s-1
Calibration Factor
1.0 µmol m-2 s-1 per mV (reciprocal of sensitivity)
Calibration Uncertainty
± 5%
Calibrated Output Range
0 to 2.5 V
Measurement Repeatability
Less than 0.5%
Non-stability (Long-term Drift)
Less than 2 % per year
Non-linearity
Less than 1 % (up to 2500 µmol m-2 s-1; maximum PPF measurement is 2500 µmol m-2 s-1)
Response Time
Less than 1 ms
Field of View
180°
Spectral Range
410 nm to 655 nm (wavelengths where response is greater than 50 % of maximum)
Spectral Selectivity
Less than 10 % from 469 to 653 nm
Directional (Cosine) Response
± 5 % at 75° zenith angle
Temperature Response
0.06 ± 0.06 % per C
Operating Environment
-40 to 70 C, 0 to 100 % relative humidity, can be submerged in water up to depths of 30 m
Dimensions
24 mm diameter and 28 mm height
Mass
90 g (with 5 m of lead wire)
Cable
5 m of shielded, twisted-pair wire. Santoprene rubber jacket (high water resistance, high UV stability, flexibility in cold conditions). Pigtail lead wires
Warranty
4 years against defects in materials and workmanship

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