DR01 pyrheliometer

DR01 first class pyrheliometer
DR01 pyrheliometer has a heated window to increase data availability
DR01 first class pyrheliometer used in tracker-mounted operation
DR01 is a high-accuracy direct (normal incidence) solar radiation sensor
First class pyrheliometer

DR01 is a high-accuracy direct (normal incidence) solar radiation sensor. The scientific name of this instrument is pyrheliometer. DR01 complies with the first class specifications of the ISO 9060 standard and the WMO Guide. The pyrheliometer has a heated window to increase data availability. DR01 is used in tracker-mounted operation.

Specifications
Measurand
  • direct solar radiation
Would you like a personalised quote?

or contact us: info@hukseflux.com

Specifications

Measurand
  • direct solar radiation
Measurement range
  • 0 to 4000 W/m²
Sensitivity (nominal)
  • 10 x 10⁻⁶ V/(W/m²)
ISO classification
  • first class pyrheliometer
Response time (95 %)
  • 12 s (nominal)
Full field of view angle
  • 5 °
Slope angle
  • 1 °
Calibration uncertainty
  • < 1.2 % (k = 2)
Calibration traceability
  • to WRR
Spectral range (50 % transmission points)
  • 200 to 4000 x 10⁻⁹ m
Rated operating temperature range
  • -40 to 80 °C
Temperature response
  • < ± 1 % (-10 to +40 °C)
Temperature response
  • < ± 0.4 % (-30 to +50 °C) with correction in data processing, if opted for internal temperature sensor + temperature dependence characterisation
Window assembly with heater
  • 12 VDC, 0.5 W
Standard cable length
  • 5 m (see options)
Options
  • longer cable, in multiples of 5 m, cable lengths above 20 m in multiples of 10 m
  • internal temperature sensor
  • temperature dependence characterisation
  • various tracking solutions can be offered by Hukseflux
Manuals & Downloads

Description

DR01 is a high-accuracy direct (normal incidence) solar radiation sensor

DR01 first class pyrheliometer

DR01 is a solar radiation sensor that is applied in high accuracy observations. It measures the solar radiation received by a plane surface from a 5 ° full field of view angle. This quantity, expressed in W/m² , is called “direct” solar radiation or direct normal irradiance (DNI). Pyrheliometers are generally employed outdoors under the sun. It is necessary to keep the instrument pointed at the sun by using a two-axis tracker. Typical DR01 applications include solar energy resource assessment, system performance monitoring (in particular for concentrated solar energy) and scientific solar climate observations.

 

DR01 window assembly is equipped with a heater to increase data availability

Benefits and operation

DR01 window assembly is equipped with a heater to increase data availability, for instance by reducing measurement errors caused by (early-morning) dew deposition. DR01 can be connected directly to commonly used data logging systems. The irradiance in W/m² is calculated by dividing the instrument output, a small voltage, by the sensitivity. This sensitivity is provided with DR01 on its product certificate. DR01 pyrheliometer is optionally equipped with a temperature sensor and is optionally characterised for its temperature dependence. This can be used to increase the accuracy of the measurement.

various pyrheliometer tracking solutions can be offered by Hukseflux

DR01 Pyrheliometer design

The pyrheliometer features a precision ground and polished quartz window, a collimated tube and thermopile sensor with a black coated surface. It has an anodised aluminium body. DR01 also features a thermally isolated low power heater in the window assembly.

Suggested use

  • outdoor PV / CPV and CSP system performance monitoring
  • solar energy surveys
  • solar resource assessments
  • meteorological networks
DR01 pyrheliometer
DR01 first class pyrheliometer

 

  • equipped with a heater to increase data availability
  • can be connected directly to commonly used data logging systems
Would you like a personalised quote?

or contact us: info@hukseflux.com