Description
The SRA20 albedometer is a sensor that measures global and reflected solar radiation and the solar albedo, or solar reflectance, with the highest accuracy. It consists of two SR20 secondary standard pyranometers with thermopile sensors; the upfacing one measuring global solar radiation, the downfacing one measuring reflected solar radiation. SRA20 complies with the latest ISO and WMO standards.
| Measurand: | Global solar radiation and reflected solar radiation |
| Measurement range: | 0 to 2000 W/m² |
| Optional measurand: |
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| Sensitivity (nominal): | 15 x 10⁻⁶ V/(W/m²) |
| Included sensors: | 2 x identical ISO 9060 secondary standard pyranometer |
| Output: | analogue millivolt |
| Temperature sensor: | Pt100 or 10 kΩ thermistor included |
| Mounting: | mounting rod with 15 x 10⁻³ m diameter included |
| Calibration traceability: | to WRR |
| Calibration uncertainty: | < 1.2 % (k = 2) |
| Spectral range: | 285 to 3000 x 10⁻⁹ m |
| Rated operating temperature range: | -40 to +80 °C |
| Standard cable length: | 5 m |
| Temperature response: | <± 1 % (-10 to +40 °C) and <± 0.4 % (-30 to +50 °C) with correction in data processing |
| Temperature response test of individual instrument: | report included |
| Standard cable length: | 5m |
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