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Quantum Sensors

Quantum sensors are calibrated for electric light or sunlight.

Photosynthetic Photon Flux (PPF) in µmol m-2 s-1, blue lens filters spectra for improved response

Our basic quantum light sensor with cosine-corrected head has a domed diffusion disk and head for improved self-cleaning characteristics and long-term stability.

An innovative blue lens improves the accuracy of these sensors and meters. The pigments in the lens filter incoming light for an improved spectral response.

Sensors are calibrated for use with electric lights or sunlight. If both are present in your application, such as in a greenhouse, we recommend the sunlight calibration.

QUANTUM SENSORS and LINE QUANTUM SENSORS are designed for use with dataloggers

Application Measuring Photosynthetic Photon Flux
Output Responsivity 0.200 mV per μmol m-2 s-1
In full sunlight 400 mV (2000 μmol m-2 s-1)
Linear range 1000 mV (5000 μmol m-2 s-1)
Sensitivity Calibrated to exactly 5.00 μmol m-2 s-1 per mV
Input power None, self-powered
Operating environment -40 to 55 °C; 0 to 100% relative humidity. Designed for continuous outdoor use. Can be submerged underwater (with or without mounting screw).
Materials Anodized aluminium with acrylic lens
Cable 3 meters of shielded, twisted-pair wire with Santoprene casing, ending in pigtail leads.
Dimensions 2.4 cm diameter, 2.75 cm high
Mass 70 g: SQ-313 & 323, 240 g: SQ-316 & 326,
400 g: SQ-311 & 321

Ordering Information:
SQ-110 Quantum Sensor - Sunlight Calibration
SQ-120 Quantum Sensor - Electric Calibration