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SQ-313: Sun Calibration Line Quantum with 3 Sensors

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  • Apogee Instruments SQ-313 Sun Calibration Line Quantum Sensor with 3 sensors.
  • Line quantum sensor-Sensor close up
Price:
$305.00
SKU:
SQ-313


Product Description

Apogee line quantum sensors measure a spatial average of  PAR (Photosynthetically Active Radiation). The SQ-313 has a sensor bar with 3 sensors and is self-powered with a 0 to 800 mV output. The sensor is calibrated for use in sunlight. The sensor housing design features an integrated bubble level and is fully potted making the sensor weatherproof. 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/PPFD in aquatic environments, including salt water aquariums where corals are grown.

 

Manuals
Owner's
Manual
Specification Sheets
Specification
Sheet
Technical Information
Sample Datalogger
Programs
Technical Drawings
Technical
Drawing
Technical Information
Technical
Information

 

Case Studies

PAR Measurements Characterize Tree Coverages

PAR Measurements Characterize Tree Coverages
Using line quantum meter to study the percent of PAR (under canopy/open sky) and its relation to survival and initial growth of native forest species.
Read More >

 

Line Quantum in Greenhouse

Controlling Flowering of Orchids in Greenhouse
Line quantum sensor used to measure PPFD and daily light integral, while experimenting with temperature to control flowering.
Read More >

   

Specifications

Power Supply
Self-powered
Sensitivity
0.2 mV per µmol m-2 s-1
Calibration Factor
5.0 µmol m-2 s-1 per mV (reciprocal of sensitivity)
Calibration Uncertainty
± 5%
Calibrated Output Range
0 to 800 mV
Measurement Repeatability
Less than 0.5%
Non-stability (Long-term Drift)
Less than 2 % per year
Non-linearity
Less than 1 % (up to 4000 µmol m-2 s-1; maximum PPF measurement is 2500 ┬Ámol m-2 s-1)
Response Time
Less than 1 ms
Field of View
180°
Spectral Range
410 nm to 655 nm
Spectral Selectivity
Less than 10 % from 469 to 653 nm
Directional (Cosine) Response
&plusnn; 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
500 mm length, 15 mm width, 15 mm height
Mass
275 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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