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…20 mA;
- LPPYRHE16ACS – 4…20mA current output (integrated amplifier-transmitter) and RS485 serial output with MODBUS-RTU protocol;
- LPPYHRE16AV – active with voltage output 0…1 V, 0…5 V or 0…10 V;
- LPPYRHE16S – active with RS485 serial output with MODBUS-RTU protocol.
The pyreliometer is supplied factory-calibrated and with a calibration report and complete with hood, cartridge for silica-gel crystals, 3 refills, 4-pin M12 flying connector.