SMP22 Pyranometer

The best secondary standard pyranometer available, with digital interface for scientific research requiring the highest level of measurement accuracy and reliability.

Description

The SMP22 is a secondary standard pyranometer that combines the new smart interface with quartz domes and sensor technology from the CMP22. Which has a proven track record of decades, making it the most accurate and reliable pyranometer in the world. The SMP22 has the widest spectral range, improved directional response, and reduced thermal offsets. Because of the highest optical quality domes the directional error is reduced below 5 W/m2. The SMP22 comes standard with RS-485 Modbus® interface and 5 year warranty.

Specifications

Spectral range (20% point) 190 to 4000 nm
Spectral range (50% points) 200 to 3600 nm
Response time (95%) < 2 s
Zero offset A < 3 W/m²
Zero offset B < 1 W/m²
Directional response (up to 80° with 1000 W/m² beam) < 5 W/m²
Temperature dependence of sensitivity (-20 ºC to +50 ºC) < 0.3 %
Temperature dependence of sensitivity (-40 °C to +70 °C) < 0.3 %
Analogue output (-A / -V version) 4 to 20 mA / 0 to 1 V
Digital output 2-wire RS-485