SR20 is a pyranometer of the highest category in the ISO 9060 classification system: Class A formerly secondary standard. This solar radiation sensor is used when measurement accuracy matters.

It measures the solar radiation received by a plane surface, in W/m2 with a 180 field of view. Output is micro-volts. SR20 secondary standard pyranometer enables you to attain the highest measurement accuracy and excels in demanding applications. It is ideal for solar energy or any other application requiring accurate solar radiation measurements. Sensor includes integrated temperature sensor and dome heater.

Purchase is for the sensor only and does not include the solar radiation shield or cable. The sensor is used but is in good working order. This sensor is $2500 new. Thank you for looking!