Solar Irradiance Photovoltaic Light PV Visible Near IR

Solar Irradiance Photovoltaic Light PV Visible Near IR

Product Details:


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/m
Peak Response 940 nm
Bandwidth 400-1100 nm
Resolution 1 W/m
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/m perpendicular to 10 m array at 10 m active area, 14% cells efficiency, 95% converter efficiency, 40 C:

  • 1000 W/m x 10 m = 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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