SMP3 Pyranometer

The SMP3 is a smart pyranometer with low maintenance and industry standard digital and analogue amplified outputs. Based on the proven CMP 3 technology the SMP3 adds Modbus® interface, improved response time and temperature corrected measurement data. The wide and low power supply range from 5 to 30 VDC makes integration in meteorological stations easy. The SMP is protected against over voltage, reversed polarity and short circuiting. Because all SMP’s have identical sensitivity and connections exchanging instruments during recalibration is easy.
  • Based on the proven CMP 3 technology the SMP3 adds Modbus® interface, improved response time and temperature corrected measurement data.
  • The wide and low power supply range from 5 to 30 VDC makes integration in meteorological stations easy.
  • RS-485 MODBUS® RTU interface
  • Wide operating temperature range (-40° to +80°C)
Spectral range 300 to 2800 nm 
Response time (63%) < 1.5 s 
Directional error (up to 80 ° with 1000 W/m² beam) 20 W/m² 
Temperature dependence of sensitivity (-20 ºC to +50 ºC) < 3 % 
Analogue outputs
  • 0 to 1 V (-V version)
  • 4 to 20 mA (-A version)
Digital output 2-wire RS-485