SHP1 Pyrheliometer

The SHP1 pyrheliometer is an enhanced version of the CHP1, equipped with a smart interface with both amplified analogue output and digital RS-485 Modbus. The SHP1 has a response time under 2 seconds and individually measured temperature correction from -40°C to +70°C.


SHP1 pyrheliometers have extremely low power consumption so that internal heating does not affect the detector performance. They operate from a wide range of supply voltages, making them ideal for power-critical applications. The power input is protected against reversed polarity, over voltage and short-circuits.
SHP1 pyrheliometer is available in two versions, one has an analogue output of 0-1 V, the other is 4-20 mA. Both have a 2-wire RS-485 interface with Modbus® (RTU) protocol.


Spectral range (50% points) 200 to 4000 nm
Response time (63%) < 0.7 s
Response time (95%) < 2 s
Zero offset due to temperature change (5K/h) < 1 W/m²
Temperature dependence of sensitivity (-30 ºC to +60 ºC) < 0.5 %
Analogue output (-V version) 0 to 1 V
Analogue output (-A version) 4 to 20 mA
Digital output 2-wire RS-485
Power supply 5 to 30 VDC
International standards (ISO) First Class