Specification |
Measuring function |
llumination and temperature, difference value,max value,
min value of illumination |
Main parts of photomet- er head |
Photodiode+cosines corrector+correction filter |
Temperature probe |
NTC thermistor |
Iluminance
measuring range |
Total measuring range:0~200,000 Lux,into four ranges
×1:0~199.9 Lux
×10:200~1999.9Lux
×100:2000~19999.9Lux
×1000:20000~200000Lux |
Temperature
measuring range |
-9.9℃~49.9°℃ |
Iluminance
accuracy |
±3%rdg(below 10000 Lux) |
±4%rdg(above 10000 Lux) |
Temperature accuracy |
±1.0℃ |
Units of illuminance
and temperature |
Four combinations of units are available |
Lux/℃ |
Lux/°F |
FC/℃ |
FC/°F |
Storage of illumination data |
Automatic
storage |
Max number of data groups is 1000,and storage
cycle is set by APP(WT81B) |
Manual
storage |
Max number of data groups is 67,and whether to
store data is deceived by manual operation. |
Operating temperature/ humidity |
0~40°℃,10~90%RH |
Storage temperature/
humidity |
-10~50℃,10~90%RH |
LCD screen update |
2 times/s |
Power source |
3* 1.5VAAA batteries |