The pyrheliometer LPPYRHE16 ( Class B Pyrheliometer according to ISO 9060:2018 classification) is an instrument for direct measurement of solar irradiance (Watt/m²).
The receiving surface must be positioned (via a solar tracker or else) perpendicularly to sun’s rays. The use of apposite diaphragms allows only direct light to hit the surface of the sensor. According to WMO and ISO 9060:2018 regulations, the pyrheliometer has a field of view of 5°.
The pyrheliometer is produced in four versions:
- LPPYRHE16 passive;
- LPPYRHE16AC active with corrent output 4-20mA;
- LPPYHRE16AV active with voltage output 0÷1V, 0÷5V or 0÷10V;
- LPPYRHE16S active with RS485 serial output with MODBUS-RTU protocol.