SQ-110 Apogee Quantum self-supplied Sensor (Calibrated for Sun light measurements)

Apogee Instruments


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The Sensor measures: PAR Light
Output Signal: mV
Cable Length: 5 meters
Power Supply: Does not require
Sensor for use in: Outdoor & Underwater

This is our Quantum Sensor Apogee SQ-100 Series, (400-700 nm) with output in µmol m-2 s-1 with 5m cable, & screw for the leveling base.
Designed for use with dataloggers
SQ-110: Calibrated for solar light.
SQ-120: calibrated for electric light.
Optional conector for HOBO data loggers.

The SQ-110 is a self-powered quantum sensor that measures photosynthetically active radiation and is calibrated for use in sunlight. The sensor housing design features a fully potted, domed-shaped head making the sensor fully weatherproof and self-cleaning. Photosynthetically active radiation (PAR), or photosynthetic photon flux (PPF), is the wavelength range from 400 to 700 nanometers and is strongly correlated with plant growth. Gardeners, greenhouse managers, growth chamber users and salt-water aquarists measure PAR to insure optimal specimen health.

Photosynthesis is driven by the number of photons between 400 and 700 nanometers (nm).
This is called the Photosynthetic Photon Flux (PPF) and is measured in μmol m
-2 s-1 (micromols of photons per square meter per second). PPF sensors are commonly called quantum sensors because a quantum refers to the amount of energy carried by a photon.

Also available Line Quantum Sensor Apogee SQ-300, designed for use with dataloggers.
Line quantum sensors are often used to quantify the variable light in greenhouses and below plant canopies because they provide a spatial average.

Sensitivity: 0.2 mV per µmol m-2 s-1
Calibration Factor: 5.0 µmol m-2 s-1 per mV (reciprocal of sensitivity)
Calibration Uncertainty: ± 5%
Measurement Repeatability: < 1 %
Non-stability (Long-term Drift): < 2 % per year
Non-linearity: < 1 % (up to 4000 µmol m-2 s-1 )
Response Time: < 1 ms
Field of View: 180°
Spectral Range: 410 nm to 655 nm (wavelengths where response is greater than 50 % of maximum)
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: 2.4 cm diameter and 2.8 cm height
Mass: 90 g (with 5 m of lead wire)
Cable: 5 m of shielded, twisted-pair wire. Santoprene rubber jacket (high water resistance, high UV stability, flexibility in cold conditions). Pigtail lead wires
Warranty: 4 years

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