Star pyranometer

General description:
Star pyranometer acc. Dirmhirn for acquisition of solar and sky radiation, 
of diffuse celestial radiation and of short-wave reflex-radiation. 
The measuring principle of the star pyranometer is based on a 
differential temperature measurement between white and black areas. 
By this an influence through the ambient temperature is avoided. 
Environmental influences are screened from the detecting areas by 
a polished precision glass cupola. Levelling the sensor is simplified 
by 3 set screws and an installed bubble level. Each instrument is 
supplied with a calibration protocol.

Specification
Measuring range: 0 to 1500 W/m2, resolution 0,1 W/m2
Spectral range: 0,3 to 30 µm
Operating range: – 40 to + 60°C
Cos effect: < 3% of measured value from 0 up to 80° inclination
Azimuth effect: < 3% of measured value
Temperature influence: < 1% of measured value from – 20 up to + 40°C
Accuracy: is made up of cos-effect, azimuth-effect and temperature influence
Nominal temperature: 22 °C ± 2°C
Linearity: < 0,5% in range 0,5 to 1330 W/m2
Stability: < 1% of measuring range per year at occasional operation
Adjustment time: 25 s (95%)
Dimensions: Ø 160 mm, height 75 mm, hole circle Ø 134 mm, bore hole Ø 8 mm
Weigth: 1 kg
Cable length:  3 m with ALMEMO®-plug and programmed calibration value

 

Order No.           Description
FL A628 S          star pyranometer
ZB 9060 K(L)     longer cable, indicate length (L), price per m
ZB A628 SB       shadow belt with stand

 

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