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        Home » Products » Solar Meter » Solar Irradiance Photovoltaic Light PV Visible Near IR

        Solar Irradiance Photovoltaic Light PV Visible Near IR

         Solar Irradiance Photovoltaic Light PV Visible Near IR
        Solar Irradiance Photovoltaic Light PV Visible Near IR
        Product Code : SM_10
        Product Description

        Solar meter model 10.0 photovoltaic PV meter

        Solar irradiance photovoltaic light PV visible + near IR


        • Integral Sensor

        • Compact

        • Durable

        • Accurate

        • LCD readout


        • Sun Irradiance Metrology

        • Solar PV Panel Input Rays

        • Estimate PV Array Power
        Solar meter Specifications
        Model 10.0
        Irrad. Range 0-1999 W/m²
        Peak Response 940 nm
        Bandwidth 400-1100 nm
        Resolution 1 W/m²
        Accuracy ± 5% Ref. WRR
        Detector Silicon Photo diode
        Conv. Rate 3.0 Readings/Sec
        Display 3.5 Digit LCD
        Digit Size 0.4 inch high
        Oper. Temp 32° F TO100° F
        Oper. Humid. 5% TO 80% RH
        Dimensions (in.) 4.2L x 2.4W x 0.9D (inches)
        Weight 4.5 OZ. (incl. batt.)
        Power Source 9-Volt DC Battery
        Lens UV Glass
        Diffuser Virgin  .005

        Example Calculation with PV Meter reading 1000 W/m² perpendicular to 10 m² array at 10 m² active area, 14% cells efficiency, 95% converter efficiency, 40° C:

        • 1000 W/m² x 10 m² = 10000 Watts incoming sun power
        • 10000 W x 0.14 cell efficiency = 1400 Watts
        • 1400 W x 0.95 conversion efficiency = 1330 Watts

        Typical temperature coefficient loss for PV cells is -0.5% per degree C over 25°...
        or 7.5% for 40° in this example (15° x 0.5% = 7.5% loss or 92.5% of above value. So:

        • 1330 W x 0.925 = 1230 Watts.

        Lastly, a small wiring & component loss of ~1% reduces PV output down to ~1218 W.

        Energy Production over Time:
        The above 1218 Watts value is an "instantaneous" number. Energy is Watt (or kilowatt) hours. So if the solar irradiance remained constant for an hour near noon, the energy produced would be 1218 WH.

        To estimate power over the entire day... take readings every hour and apply the above examples. Then add up each hour's value x number of hours for daily Watt Hours. Of course the value will increase toward summer, peaking near June 21 in northern hemisphere... and decrease toward winter, lowest near December 21 solstice. Southern hemisphere is opposite


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