{"product_id":"uni-t-ut381pv-solar-irradiance-meter","title":"UNI-T UT381PV Solar Irradiance Meter","description":"\u003ch2\u003eUNI-T UT381PV Solar Irradiance Meter in Sri Lanka\u003c\/h2\u003e\n\n\u003ch3\u003eAdvanced PV Site Survey and Solar Panel Testing Instrument\u003c\/h3\u003e\n\n\u003cp\u003e\n  The \u003cstrong\u003eUNI-T UT381PV Solar Irradiance Meter\u003c\/strong\u003e is a professional handheld instrument for measuring solar irradiance in natural and simulated sunlight. It is designed for photovoltaic panel installation, solar plant maintenance, site assessment, PV product testing, meteorological research, and agri-environmental monitoring.\n\u003c\/p\u003e\n\n\u003cp\u003e\n  The UT381PV combines irradiance measurement with dual-channel temperature monitoring, built-in inclination and azimuth sensors, data recording, Bluetooth communication, and mobile-app connectivity. Its integrated solar panel mounting bracket and suction-cup temperature probe help technicians collect practical field measurements directly during photovoltaic installation and maintenance work.\n\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdl class=\"package-list\"\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eSolar Irradiance Measurement\u003c\/strong\u003e: 0–1400 W\/m² | Resolution: 1 W\/m² | Accuracy: ±(5.0% of reading + 5 digits)\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eAlternative Irradiance Unit\u003c\/strong\u003e: 0–500 Btu\/(ft²·h) | Resolution: 1 Btu\/(ft²·h) | 1 Btu\/(ft²·h) ≈ 3.15459 W\/m²\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eTemperature Measurement\u003c\/strong\u003e: -40°C to 120°C \/ -40°F to 248°F | Resolution: 0.1°C or 0.2\/1°F\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eTemperature Accuracy\u003c\/strong\u003e: ±1°C from -10°C to 75°C; ±2°C outside this range | ±2°F from 14°F to 167°F; ±4°F outside this range\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eInclination Measurement\u003c\/strong\u003e: -90.0° to +90.0° | Resolution: 0.1° | Accuracy varies by angle\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eAzimuth Measurement\u003c\/strong\u003e: 0° to 360° | Resolution: 1° | Accuracy: ±7° when inclination is within -20° to +20°\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eData Storage\u003c\/strong\u003e: Up to 12,800 measurement sets\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eRecording Interval\u003c\/strong\u003e: 1 second to 60 minutes\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eBluetooth Transmission Distance\u003c\/strong\u003e: Up to 100 m in open, unobstructed conditions\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eDimensions\u003c\/strong\u003e: 201 × 54.2 × 33.7 mm\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eWeight\u003c\/strong\u003e: Approximately 212 g without batteries\n  \u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cdl class=\"package-list\"\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eProfessional Irradiance Measurement\u003c\/strong\u003e: Measures solar irradiance from 0 to 1400 W\/m² for photovoltaic installation, inspection, and maintenance applications\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eDual Temperature Channels\u003c\/strong\u003e: Displays temperature from the built-in sensor and the supplied external suction-cup temperature probe\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eBuilt-In Tilt and Azimuth Sensors\u003c\/strong\u003e: Measures panel inclination from -90° to +90° and direction from 0° to 360° for solar installation assessment\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eData Recording\u003c\/strong\u003e: Stores up to 12,800 sets of measurement data with selectable recording intervals from 1 second to 60 minutes\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eBluetooth Connectivity\u003c\/strong\u003e: Transmits measurement data wirelessly to a compatible mobile device or UNI-T UT541 photovoltaic I-V curve analyzer\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eiENV Mobile App Support\u003c\/strong\u003e: Supports real-time data viewing, analysis, and PDF or CSV report export through the compatible mobile application\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eVisual and Audio Alerts\u003c\/strong\u003e: Provides alerts when irradiance or configured inclination conditions are outside the selected limits\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eOutdoor Protection\u003c\/strong\u003e: IP65-rated housing with specialized anti-UV construction and 2 m drop protection\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eLong Battery Operation\u003c\/strong\u003e: Operates for approximately 95 hours with Bluetooth and LED light switched off\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eAutomatic Power-Off\u003c\/strong\u003e: Can switch off automatically after approximately 30 minutes without operation\n  \u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cdl class=\"package-list\"\u003e\n  \u003cdd\u003eSolar PV panel installation and commissioning\u003c\/dd\u003e\n  \u003cdd\u003ePhotovoltaic plant inspection and preventive maintenance\u003c\/dd\u003e\n  \u003cdd\u003eSolar site surveying and panel orientation assessment\u003c\/dd\u003e\n  \u003cdd\u003eSolar module testing in PV laboratories\u003c\/dd\u003e\n  \u003cdd\u003eSolar irradiance monitoring in natural or simulated sunlight\u003c\/dd\u003e\n  \u003cdd\u003eMeteorological and solar-energy research\u003c\/dd\u003e\n  \u003cdd\u003eAgri-environmental monitoring and sunlight assessment\u003c\/dd\u003e\n  \u003cdd\u003eData collection for photovoltaic I-V curve testing workflows\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch3\u003eImportant Operating Notes\u003c\/h3\u003e\n\u003cdl class=\"package-list\"\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003ePanel Temperature\u003c\/strong\u003e: Use the supplied suction-cup probe in contact with the rear or surface area of the PV panel when an external panel-temperature reading is required\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eInclination Measurement\u003c\/strong\u003e: Place the meter on the PV panel or mounting surface and zero the inclination when required before taking a measurement\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eAzimuth Measurement\u003c\/strong\u003e: For accurate compass readings, keep the meter approximately within -20° to +20° inclination and away from metal objects and magnetic interference\n  \u003c\/dd\u003e\n  \u003cdd\u003e\n    \u003cstrong\u003eBluetooth Range\u003c\/strong\u003e: The stated 100 m transmission distance applies to open and unobstructed environments\n  \u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cdl class=\"package-list\"\u003e\n  \u003cdd\u003e1 x UNI-T UT381PV Solar Irradiance Meter\u003c\/dd\u003e\n  \u003cdd\u003e2 x AA batteries\u003c\/dd\u003e\n  \u003cdd\u003e1 x Suction-cup temperature probe\u003c\/dd\u003e\n  \u003cdd\u003e1 x Solar panel mounting bracket\u003c\/dd\u003e\n  \u003cdd\u003e1 x Cloth carrying bag\u003c\/dd\u003e\n  \u003cdd\u003e1 x User manual\u003c\/dd\u003e\n  \u003cdd\u003e1 x Safety guide\u003c\/dd\u003e\n  \u003cdd\u003e1 x General download operation guide\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch3\u003eDownloads\u003c\/h3\u003e\n\u003cp\u003e\n  \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0679\/7587\/2725\/files\/uni-t-ut381pv-data-sheet.pdf\" target=\"_blank\"\u003e📄 Download UNI-T UT381PV Data Sheet\u003c\/a\u003e\u003cbr\u003e\n  \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0679\/7587\/2725\/files\/uni-t-ut381pv-user-manual.pdf\" target=\"_blank\" rel=\"noopener\"\u003e📄 View UNI-T UT381PV User Manual\u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003cdiv class=\"product-vendor\"\u003e\n  \u003cstrong\u003eBrand:\u003c\/strong\u003e \u003ca href=\"\/collections\/vendors?q=UNI-T\"\u003eUNI-T\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"variant-inventory\"\u003e\u003cspan class=\"in-stock\"\u003eIn stock!\u003c\/span\u003e\u003c\/div\u003e","brand":"UNI-T","offers":[{"title":"Default Title","offer_id":54899705741525,"sku":null,"price":109500.0,"currency_code":"LKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7587\/2725\/files\/uni-t-ut381pv-solar-irradiance-meter-front-view.jpg?v=1789103665","url":"https:\/\/nanozone.lk\/products\/uni-t-ut381pv-solar-irradiance-meter","provider":"NanoZone.LK","version":"1.0","type":"link"}