Measures Photosynthetically Active Radiation.
|Voltage Sensitivity||1mV/100 µmol m-2 s-1|
|Current Sensitivity||2µA/100 µmol m-2 s-1|
|Working Range||0-104 µmol m-2 s-1|
|Absolute Calibration Error||Typically less than 3%, 5% max.|
|Temperature Coefficient||±0.1% per °C|
|Response Time – Voltage Output||10ns|
|Internal Resistance – Voltage Output||c.500 ohms|
|Operating Conditions||-35 to +75°C
|Sensor||Cosine corrected head|
|Detector||Silicon photocell, low fatigue characteristics|
|Dimensions||38mm high, 34mm diameter.
140g (with 3m cable)
|Construction||Material Dupont ‘Delrin’ fully sealed to IP68|
|Cable||2 core screened DEF std 61-12/4.5|
Skye Instruments have been specialising in light and radiation sensors since 1983. All are designed, manufactured and calibrated to the highest standards. Each is supplied with a Calibration Certificate traceable to the UK’s National Physical Laboratory (NPL).
There are three PAR sensors in the range, PAR Quantum, PAR Special and PAR Energy models. All measure the Photosynthetically active radiation between 400-700 nm, the part of the solar spectrum used by plants for photosynthesis and sugar production.
The PAR Special sensor has a spectral response closely related to a green plant (McCree 1971/71) ie: it is more responsive in the red and blue areas of the spectrum and less responsive in the green region. This design is unique to Skye Instruments.
This sensor is often used alongside the more popular PAR Quantum sensor which has an “ideal” square response to PAR. Both measure photon irradiance, or quantity of PAR light and are calibrated in units of µmol m-2 s-1 (number or quanta of photons).
PAR sensors are suitable for use in natural solar radiation or any lamp or light source. Each is fully waterproof and guaranteed submersible to 4m depth.
They are compatible with Skye Display Meters, SpectroSense meters and DataHog loggers. A choice of outputs are also available to suit most dataloggers and controllers.