HTabsOverviewPart number: 7.1415.01.7xx It is also used as a reference instrument due to its measurement precision. The instrument is "secondary standard" according to WMO and ISO 9060. The incorporated heater reduces measurement errors caused by early-morning dew deposition.Delivery includes calibration certificate and ISO 9060 required directional response and temperature response test reports. Pyranometer SR 20 - 7.1415.01.7xx.pdf SpecificationMeasurement Parameter: RadiationSpecification: Part number: 7.1415.01.7xx Radiation Measuring range 0 ... 4000 W/m² Sensitivity 7 ... 25 µV/W/m² Typ. Signal output -0.1 ... 50 mV Spectral range 285 ... 3000 nm Non-linearity <0.2 % @ 100 ... 1000 W/m² Internal resistance 50 ... 100 ê Response time <3 sec @ 95 % of final value Sensor type Thermopile General Ambient temp. -40 ... +80 °C Electr. connection plug with 5 m cable Dimension Ø 150 x 85 mm Weight 0.85 kg Further InfoDocuments: Pyranometer SR 20 - 7.1415.01.7xx.pdf