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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

                                  Features

                                  • Integral Sensor

                                  • Compact

                                  • Durable

                                  • Accurate

                                  • LCD readout

                                  Applications

                                  • Sun Irradiance Metrology

                                  • Solar PV Panel Input Rays

                                  • Estimate PV Array Power
                                  Solar meter Specifications
                                  Radiometer
                                  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 PTFE .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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