Hukseflux SR20 Pyranometer

Collect solar irradiance data with class A (secondary standard) accuracy using the Hukseflux SR20 Pyranometer.

  HUKSEFLUX SR20 THERMOPILE PYRANOMETER (#10533)
Description
Sensor type Thermopile solar radiation sensor; ISO 9060:2018 ‘Class A’ (Secondary Standard) compliant
Applications
  • Solar resource assessment and monitoring
  • Meteorological studies
  • Environmental monitoring
Sensor range 0 W/m2 to 4000 W/m2
Spectral range 285 nm to 3000 nm
Instrument compatibility All NRG Symphonie series loggers with:
  • P-SCM (#9128) for SymphoniePRO
  • Thermopile SCM (#6646) for earlier models (logger measurement range 0 W/m2 to 1500W/m2)
Output signal
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 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 requirements
Power Required Zero (passive sensor)
Installation
Mounting Mounts to tower using NRG's Mounting Plate | Pyranometer, Gen II (14357) or Mounting Plate | Pyranometer, Gen I (14502)
Tools required
  • 2.5 mm Hex Key
  • 5/16 inch (8 mm) wrench or nut driver
Environmental
Operating temperature range -40 °C to 80 °C (-40 °F to 176 °F)
Operating humidity range 0 to 100%
Physical
Connections 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)
Materials
Cable Removable 5 m signal cable with molded Binder style four pole M16 connector (4-conductor cable with shield; included with connector)
Detector Thermopile
Enclosure IP67 weatherproof anodized aluminum enclosure and stainless steel hardware

NRG Systems • 110 Riggs Road • Hinesburg, Vermont 05461 • +1 802-482-2255 • info@nrgsystems.com