Solar Irradiance Photovoltaic Light PV Visible Near IR

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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/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