The SQ-100X-SS is a self-powered, analog original quantum sensor with a 0 to 400 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.
Power SupplySelf-poweredSensitivity0.1 mV per µmol mˉ² sˉ¹Calibration Factor10 µmol mˉ² sˉ¹ per mV (reciprocal of sensitivity)Calibration Uncertainty± 5 %Calibrated Output Range0 to 400 mVMeasurement RepeatabilityLess than 0.5 %Non-stability (Long-term Drift)Less than 2 % per yearNon-linearityLess than 1 % (up to 4000 µmol mˉ² sˉ¹ )Response TimeLess than 1 msField of View180˚Spectral Range370 to 650 nm (wavelengths where response is greater than 50 % of maximum)Directional (Cosine) Response± 5 % at 75˚ zenith angleTemperature Response-0.04 % per COperating Environment-10 to 60 C; 0 to 100 % relative humidity; can be submerged in water up to depths of 30 mDimensions24 mm diameter, 33 mm heightMass90 g (with 5 m of lead wire)Cable5 m of shielded, twisted-pair wire with TPR jacket (high water resistance, high UV stability, flexibility in cold conditions)Warranty4 years against defects in materials and workmanshipManufacturedMade in the USA