Pyranometers (global radiation sensors) measure global radiation. They are also used as reference instruments due to their measurement precision. The use of this sensor is crucial for measurements with solar-powered applications. It is advisable to use only classified and calibrated pyranometers to ensure accurate results. Adjustable feet and a level allow easy horizontal adjustment.
Pyranometers are classified according to the ISO 9060 standard: "Solar energy - Specification and classification of instruments for measuring hemispherical solar and direct solar radiation". The standard is officially approved by the World Meteorological Organization (WMO). The standard specifies three classes:
Secondary Standard: Scientific quality and highest accuracy
Applications: Meteorology (BSRN Network); Testing in PV , CPV and CSP
First Class: Good quality
Applications: Measurements for hydrology networks and greenhouse climate control
Second Class: Medium quality
Application: Economic solution for routine measurements in weather stations and field testing
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Response time: time to reach 95% response | < 15s | < 30s | < 60s |
Zero-offset: Offset-A: response to 200 W/m² net thermal radiation, ventilated Offset-B: response to 5 K/h change in ambient temperature |
+ 7 W/m² ± 2 W/m² |
+ 7 W/m² ± 2 W/m² |
+ 7 W/m² ± 2 W/m² |
Non-stability: % change in responsivity per year | ± 0.8% | ± 1.5% | ± 3% |
Non-linearity: % deviation from responsivity at 500 W/m² due to change in irradiance from 100 ... 1000 W/m² | ± 0.5% | ± 1% | ± 3% |
Directional response (for beam irradiance): the range of errors caused by assuming that the normal incidence responsivity is valid for all directions when measuring from any direction, a beam radiation whose normal incidence irradiance is 1000 W/m² | ± 10 W/m² | ± 20 W/m² | ± 20 W/m² |
Spectral selectivity: % deviation of the product of spectral absorbance and transmittance from the corresponding mean, from 0.35 ... 1.5 μm | ± 3% | ± 5% | ± 10% |
Temperature response: % deviation due to change in ambient within an interval of 50K, (e.g. -10 ... +40°C typical) | 2% | 4% | 8% |
Tilt response: % deviation in responsivity relative to 0 ... 90° tilt at 1000 W/m² beam irradiance | ± 0.5% | ± 2% | ± 5% |
Achievable uncertainty (95% confidence level) Hourly totals Daily totals |
3% 2% |
8% 5% |
20% 10% |
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Order-No: Maintenance-free due to internal desiccant, which lasts for 10 years. 5 years manufacurer's warranty.
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Order-No.: Measurement of solar irradiance
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Further radiation sensors are available on request. Please ask our sales team +49-30-6003188-0 or This email address is being protected from spambots. You need JavaScript enabled to view it. |
Measurement data complete?
Data quality good enough for MEASNET?
Power supply okay?
Battery voltage satisfactory?
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