Updated:2023-05-30
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Measurand | longwave radiation |
Optional measurand | sky temperature, surface temperature |
Sensitivity (nominal) | 17 x 10⁻⁶ V/(W/m²) |
Spectral range IR20 | 4.5 to 40 x 10⁻⁶ m (nominal) |
Spectral range IR20WS | 1.0 to 50 x 10⁻⁶ m |
IR20WS restrictions for use | only in the absence of solar radiation |
Field of view angle | 180 ° |
Response time (95 %) | 3 s |
Rated operating temperature range | -40 to +80 °C |
Temperature dependence | < ± 0.4 % (-30 to +50 °C) |
Calibration traceability | to WISG |
Optional traceability | to blackbody (ITS-90) |
Temperature sensor | 10 kΩ thermistor |
Heater | 12 VDC, 1.5 W |
Standard cable length | 5 m |
Options |
• Longer cable, in multiples of 5 metres • Blackbody calibration (ITS-90) • VU01 ventilation unit is designed for use with IR20 / IR20WS pyrgeometer |
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