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SQ-100X-SS: Original Quantum Sensor

Updated:2025-03-13

Brand: Apogee
Model: SQ-100X-SS
Description: The SQ-100X-SS is a self-powered, analog original quantum sensor with a 0 to 250 mV output. The sensor features a rugged, self-cleaning sensor housing design, and high-quality cable terminating in pre
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Product Details

Overview of SQ-100X-SS: Original Quantum Sensor：

User's Manual

The SQ-100X-SS is a self-powered, analog original quantum sensor with a 0 to 250 mV output. The sensor features a rugged, self-cleaning sensor housing design, and high-quality cable terminating in pre-tinned pigtail leads for easy connection to dataloggers and controllers. 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. Sensor includes IP68 marine-grade stainless-steel cable connector 30 cm from head to simplify sensor removal and replacement for maintenance and recalibration.

The analog version of this sensor (SQ-100X-SS) comes with the inline cable connector placed 30 cm from the sensor head for either standard use as a long-cable pigtail sensor, or for use with our microCache Bluetooth Micro Logger by unscrewing the connector, discarding the long section of cable and then screwing the sensor to the mating connector on the microCache.

SQ-100X-SS Sensor Drawing：

Specifications of SQ-100X-SS:

Power Supply	Self-powered
Sensitivity	0.1 mV per μmol mˉ2 sˉ1
Calibration Factor	10 μmol mˉ2 sˉ1 per mV (reciprocal of sensitivity)
Calibration Uncertainty	± 5 %
Calibrated Output Range	0 to 250 mV
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 mˉ2 sˉ1 )
Response Time	Less than 1 ms
Field of View	180?
Spectral Range	370 to 650 nm (wavelengths where response is greater than 50 % of maximum)
Directional (Cosine) Response	± 5 % at 75? zenith angle
Temperature Response	-0.04 % per C
Operating Environment	-10 to 60 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 m
Dimensions	24 mm diameter, 33 mm height
Mass	90 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
Manufactured	Made in the USA