* SD card capacity : 1 GB to 16 GB.
* LCD with green light backlight, easy reading.
* Can default auto power off or manual power off.
* Data hold, record max. and min. reading.
* Microcomputer circuit, high accuracy.
* Power by UM3/AA ( 1.5 V ) x 6 batteries or DC 9V adapter.
* RS232/USB PC computer interface.
* Patented.
2. SPECIFICATIONS
Function
Solar power
Transmission ( % )
Solar power integration
Spectral
400 to 1100 nm
response
Measuring
Solar power:
Unit
W/m^2, Btu/( ft^2 x h )
Transmission : %
Solar power integration :
Wh/m^2, Btu/( ft^2 )
Solar power
Range
Range/
2000 W/m^2, 634 Btu/( ft^2 x h )
Solar power
0.1 W/m^2
<1000 W/m^2
1 W/m^2
1000 W/m^2
≧
Resolution
0.1 Btu/( ft^2 x h ) < 317 Btu/( ft^2 x h )
1 Btu/( ft^2 x h )
317 Btu/( ft^2 x h )
≧
Solar power
± 10 W/m^2 typically,
Accuracy
± 3 Btu / ( ft^2 x h ) typically,
or ± 5% reading,
@ whichever is greater in sunlight
@ 23 ± 5
℃
Angular
Cosine corrected <5% for angles < 60°
accuracy
Circuit
Custom one-chip of microprocessor LSI
circuit.
2
