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UNI-T
Authorized brand
The UT381PV Solar Irradiance Meter is designed to measure solar irradiance under both natural and simulated sunlight. It is equipped with dual measurement channels for monitoring ambient and solar panel temperatures, along with a built-in inclination and azimuth sensor to accurately determine installation direction and tilt angle. The device also supports connectivity with the mobile application “iENV” and can be integrated with the UT541 15KW Photovoltaic I-V Curve Analyzer. It is widely used for solar panel installation and maintenance in photovoltaic power stations, as well as for product testing in PV laboratory environments.
Functions Range Resolution Accuracy
Temperature Measurement -40~120℃ 0.1 ±1℃ (-10~75℃) ±2℃ (others)
–40~248°F 0.2/1 (>100℉) ±2℉(14~167℉) ±4℉(others)
Inclination Measurement –90.0~+90.0 ° 0.1 ±1.5°(-50~+50°)
±2.5°(-85~50°,+50~+85°) ±3.5°(others)
Azimuth Measurement 0~360° 1 ±7°
Data Storage 12800 sets
Storage interval 1s ~ 60min
LED Indicator ✔
Sound Prompts ✔
Auto Power Off 30 minutes (no operations)
Compass Calibration ✔
Mobile APP ✔
Time Setting ✔
Bluetooth wireless transmission distance 100m
Working Height ≤2000 meters
Working Environment -20℃~60℃, ≤90%RH(non-condensing )
Storage Environment -30℃~70℃, ≤80%RH(non-condensing )
IP Rating IP65
Drop Test 2 meters
General Characteristics
Battery 2×AA
Battery Life About 95h
Size 201×54.2×33.7mm
Weight About 212g(Battery not included)
Accessories Solar Irradiance Meter*1, Cloth Bag*1, User Manual*1, Safety Guide*1, AA Battery*2, Suction-Cup Temperature Probe*1, Solar Panel Mounting Bracket*1, General Download Operation Guide*1