SQ-316 6-in-Line Quantum Sensors

50 cm bar sensor with 6 in-line PAR Light Sensors (400-700 nm) with calibration for 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. Sensor includes IP68 marine-grade stainless-steel cable connector 30 cm from head to simplify sensor removal and replacement for maintenance and recalibration.

Power Supply: Self-powered
Sensitivity: 0.2 mV per µmol mˉ² sˉ¹
Calibration Factor: 5 µmol mˉ² sˉ¹ 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 mˉ² sˉ¹)
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 655 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: 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 with TPR jacket (high water resistance, high UV stability, flexibility in cold conditions)
Warranty: 4 years against defects in materials and workmanship