Hukseflux SR20 Pyranometer
Collect solar irradiance data with class A (secondary standard) accuracy using the Hukseflux SR20 Pyranometer.
Recommended when measurement accuracy is the top priority, the Hukseflux SR20 is a thermopile pyranometer that is compliant with the highest category in the ISO 9060 standard: class A (Secondary Standard).
This high-accuracy thermopile-based sensor measures global horizontal irradiance (GHI) and has a spectrally flat response across the full solar spectrum. The SR20 generates a small voltage signal that is proportional to the solar radiation flux, expressed in W/m^2.
The SR20 is compatible with all Symphonie series data loggers when equipped with a Symphonie® SCM Card (SCM #6646, used with the SymphoniePLUS®3 Data Logger and older) or Pro Signal Conditioning Module (P-SCM #9128, used with the SymphoniePRO Data Logger).
This sensor comes with a full sensor-specific characterization to the parameters of ISO 9060, calibration certificate, sun screen, and 5 m (16.4') cable. Note that as with all thermopile pyranometers, regularly scheduled maintenance is imperative to achieve the sensor’s specified performance.
Specifications Print Specs
|Hukseflux SR20 Thermopile Pyranometer (#10533)|
|Sensor type||Thermopile solar radiation sensor; ISO 9060:2018 ‘Class A’ (Secondary Standard) compliant|
|Sensor range||0 W/m2 to 4000 W/m2|
|Spectral range||285 nm to 3000 nm|
All NRG Symphonie series loggers with:
|Signal type||Microvolt proportional to total solar radiation|
|Transfer function||Included on calibration certificate; for use with NRG Symphonie see application note "Using Thermopile Pyranometers on Symphonie Loggers"|
|Accuracy||Class A (Secondary Standard) per ISO 9060:2018|
Calibration sheet included with each sensor defines output in microvolts per Watt/m2; traceable to World Radiometric Reference (WRR)
Calibration uncertainty < 1.2% (k=2) as specified by Hukseflux
|Output signal range||-0.1 mV to + 50 mV|
|Drift||Less than 0.5% per year|
|Power Required||Zero (passive sensor)|
|Mounting||Mounts to tower using NRG's Mounting Plate | Pyranometer, Gen II (14357) or Mounting Plate | Pyranometer, Gen I (14502)|
|Operating temperature range||-40 °C to 80 °C (-40 °F to 176 °F)|
|Operating humidity range||0 to 100%|
Bare wire leads from cable connect directly to logger
see also logger user's manual for wiring diagram
|Cable length||5 m (16.4 feet)|
|Weight||1.2 kg (2.6 lbs)|
|Dimensions||150 mm X 85 mm (5.9 inches X 3.3 inches)|
|Cable||Removable 5 m signal cable with molded Binder style four pole M12 connector (4-conductor cable with shield; included with connector)|
|Enclosure||IP67 weatherproof anodized aluminum enclosure and stainless steel hardware|