As per wikipedia thermopile pyranometer measures solar radiation flux density from a 180° field of view angle. it normally measures radiation in 300 to 2800 nm bandwidth. Thermopile pyranometers are frequently used in Solar Power Plants, meteorology, climatology, climate change research and building engineering physics.
Pyranometers are important part in solar power plant to monitor the PR of a solar power plant. In solar Power plant the pyranometers are usually installed horizontally for measuring GHI and in the 'plane of array' for measuring GII. A pyranometer may be classified either as a Class A (or Secondary Standard), Class B (or First Class) or Class C (or Second Class)
Jambhekar Automation Solutions is an authorized Distributor of Kipp and Zonen pyranometers for all over India. CMP3, SMP3, CMP6, CMP10,CMP11, SMP11 are some of the popular pyranometers from kipp and zonen which Jambhekar Automation Solutions distributes all over India
Apart from these Hukseflux provides SR-05, SR-20T1 and SR-20D2 pyranometers and EKO manufactures pyranometes like MS-40, MS-40A, MS-40M, MS-60, MS-60A, MS-60M, MS-80, MS-80A, MS-80M and MS-80S etc.