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Enabling better global research outcomes in soil, plant & environmental monitoring.

Skye SKP 215 PAR Quantum Sensor

Measures Photosynthetically Active Radiation

  • Counts quanta of photons in μmol m-2 s-1
  • Ideal or “square” PAR spectrum response.
  • Ideal for plant and crop research or commercial horticulture applications.
  • Suitable for natural and artificial light sources.
  • Calibrated to National Standards.
Detector Blue enhanced silicon photocell. Low fatigue characteristics
Sensor Cosine corrected head
Filters Optical Glass
Voltage Sensitivity 1mv/100 µmol m-2s-1
Current Sensitivity 2µA/100 µmol m-2s-1
Working Range 0-5×104 µmol m-2s-1
Linearity Error <0.2%
Absolute Calibration Error Typically <3%, 5% max.
Cosine Error 3%
Azimuth Error <1%
Temperature Coefficient ±1% per °C
Longterm Stability ±2%
Response Time – Voltage Output 10ns
Internal resistance – voltage output c.350 ohms
Operating Conditions -35 to +75°C
0-100% RH
Construction Material Dupont ‘Delrin’ fully sealed to IP68
Dimensions 38mm high, 34mm diameter.
130g (with 3m cable)
Cable 2 core screened DEF std 61-12/4.5

SKP 215 response

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. All measure the Photosynthetically Active Radiation between 400-700nm, the part of the solar spectrum used by plants for photosynthesis and sugar production.

The most popular is the PAR Quantum sensor, which is used to measure photon irradiance, or quantity of PAR light. It is calibrated in units of μmol m-2 s-1 (number or quanta of photons).

Skye 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. Indoor versions are also available.

The Skye PAR sensors are compatible with Skye Display Meters, SpectroSensor meters and DataHog loggers. A choice of outputs are also available to suit most dataloggers and controllers.

  • SpectroSense 2
    The Skye SpectroSense2 is 4-Channel meter for light sensors.
  • DataHog2 datalogger
    The DataHog 2 is a dedicated, accurate and reliable system, which is easy to use, completely weatherproof, robust, durable and low cost.