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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.
Hukseflux SR20 Thermopile Pyranometer (#10533) |
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DESCRIPTION |
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| Sensor type | Thermopile solar radiation sensor; ISO 9060:2018 ‘Class A’ (Secondary Standard) compliant |
| Applications |
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| Sensor range | 0 W/m2 to 4000 W/m2 |
| Spectral range | 285 nm to 3000 nm |
| Instrument compatibility | All NRG Symphonie series loggers with:
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OUTPUT SIGNAL |
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| 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 |
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| Power Required | Zero (passive sensor) |
INSTALLATION |
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| Mounting | Mounts to tower using NRG's Mounting Plate | Pyranometer, Gen II (14357) or Mounting Plate | Pyranometer, Gen I (14502) |
| Tools required |
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ENVIRONMENTAL |
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| Operating temperature range | -40 °C to 80 °C (-40 °F to 176 °F) |
| Operating humidity range | 0 to 100% |
PHYSICAL |
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| 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 |
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| Cable | Removable 5 m signal cable with molded Binder style four pole M12 connector (4-conductor cable with shield; included with connector) |
| Detector | Thermopile |
| Enclosure | IP67 weatherproof anodized aluminum enclosure and stainless steel hardware |
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