Specifications for MQS-B

All specifications are subject to change without prior notice.


Design of sensor: Mini quantum sensor for selective PAR (photosynthetically active radiation) measurement, cosine corrected for PPFD (photosynthetical photon flux density) measurement.

Sensor housing: Black anodized aluminum housing

Diffuser material: Perspex

Signal detection: High stability silicone photovoltaic detector with filter set for PAR correction (to learn more about the typical sensitivity see “General Features”). Signal output typically -2 μA / (1000 μmol m-2 s-1)

Temperature coefficient of photodiode: 0.01 %/K

Absolute calibration: ± 5 %

Angular dependence: error < 4 % between angles from -80° to +80° from normal axis

Immersion coefficient: Typically 1.32

Operating temperature: - 5 °C … + 45 °C

Cable length: 3 m

Connector: BNC

Power supply: Not required

Size: Height: 16 mm; diameter: 14 mm; Diffuser diameter: 5.5 mm

Weight: 32 g