SOLAR POWER METER, DIGITAL, SM206

Product Description
This meter is a precision instrument for measuring light intensity. It is used in solar radiation measurement,solar research, physical and optical experiments, meteorology, and agriculture. I can also be used to measure glass ligh intensity to verify glass properties. For example: Measurement of light intensity through vehicle windows.
Feature:
Selectable from two units: W/ and Btu
* Peak value retention function
* Data retention function
* Measure directly without adjustment
* Steadily measure for a long period
Specification:
Resolution: 0.1W/m2, 0.1 Btu/(ft2-h)
* Accuracy: ± 10W/m2 [±3 Btu/(ft2-h)] or ±5% of the measured value
* Temperature coefficient: ±0.38W/m2 / °C [ ±0.12 Btu/(ft2-h)/°C ] deviation at 25°C
* Display: 3-3/4LCD display, maximum displayed numerical value 3999
* Shift: <±3% /year * Overload display "OL" * Range: 0.1-399.9 W/m2, 1-3999 W/m2, 0.1-399.9 Btu/(ft2-h), 1-3999 Btu/(ft2-h) * Sampling time: 0.25s/time * Operation temperature and humidity: 0°C to 50°C <80%RH * Storage temperature and humidity: -10°C to 60°C <70%RH * Dimensions and weight: 132(L) x 60(W) x 38 (H)mm * Weight: approx. 150g * Battery needed: 9V battery 6F22 * Battery operation life: Approx. 100 hours