Photosynthetically Active Light (PAR)

Quantum Sensors measure radiation in the frequencies used by plants for photosynthesis (400-700nm). Photosynthesis is largely driven by the number of photons between these wavelengths, so this radiation is called the Photosynthetic Photon Flux (PPF) and is measured in µmol m-2 s-1. A quantum is the energy carried by a photon so this is a quantum sensor.

Apogee Std Quantum (PAR) Sensors & Meters

This is a family of economically priced quantum sensors and meters calibrated for either sunlight or electric light, with self powered or amplified voltage output options. Line sensors are also available that incorporate a number of sensors mounted in a single bar and provide a spatial average over the sensing area.
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Apogee Full Spectrum Quantum Sensors & Meter

The new SQ-500 Full Spectrum quantum sensor and MQ-500 Meter feature an improved detector that provides excellent measurements under all light sources, including LEDs, right out of the box.
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Apogee Smart Quantum Sensors

The SQ-420 & SQ-520 can be used two ways - they can be connected to a computer for real-time measurements using the provided software, or when simply connected to a power source, can act as a stand-alone datalogger capable of storing 10,000 measurements internally that can then be uploaded to a computer for analysis.
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LI190R Quantum (PAR) Sensor

The LI190R, manufactured by LI-COR, is a quantum sensor that accurately monitors Photosynthetic Photon Flux Density (PPFD) in both natural and artificial light. It has a voltage output and is ideal for growth chambers and greenhouses.
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Skye PAR Sensors

Skye manufacture a range of specialist light sensors and plant analysis systems. All Skye light sensors are directly traceable to NPL - Calibration Standards Body of the UK. They have a range of excellent specialised radiation sensors that measure in the specific wavelengths and with a range of outputs.
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Delta-T SunScan Canopy Analysis System

The SunScan Canopy Analysis System uses field measurements of Photosynthetically Active Radiation (PAR) in crop canopies to provide valuable information about Leaf Area Index (LAI) and biomass production.
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YouTube Talks by Dr Bruce Bugbee Of Apogee Instruments

 

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