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- Operating temperature and humidity:
0ºC-30ºC (no more than 80%RH);
30ºC-40ºC (no more than 75%RH);
40ºC-50ºC (no more than 45%RH)
- Storage temperature and humidity: -20ºC-+60ºC (no more than 80%RH)
3. Electrical specification
- Accuracy tolerance: ± (a%rb digits), calibrate once each year
- Environment temperature: 23ºC±5ºC
- Environment humidity: ≤80% RH
- Temperature coefficient: 0.1× (accuracy tolerance)/ºC
Illuminance measuring
Function
Range
Resolution
Accuracy tolerance:
± ( a %rb digits)
Illuminance
measuring
(LUX)
20Lux
0.01Lux
± (3% + 20)
200Lux
0.1Lux
± (3% + 8)
2000Lux
1Lux
± (3% + 8)
20000Lux
10Lux
± (3% + 8)
Illuminance
measuring
(FC)
2FC
0.001FC
The accuracy tolerance of FC can
be verified by unit conversion:
FC=10.76lux, if accuracy tolerance
verification is needed, it can be
achieved by unit conversion.
20FC
0.01FC
200FC
0.1FC
2000FC
1FC
VII MAINTENANCE
Warning
During replacing battery or measuring, keep the sensitive mirror from scratch or dirt to avoid
damaging the mirror or influencing the measuring precision; and do not charge the replaced battery
to avoid explosion and safety accident!
1. Battery installation and replacement
When “
” is displayed on the luxometer, replace the battery immediately.
Replace the battery by following procedures:
- Power off
- Loosen the screw of battery cover and take it off.
- Replace with a new 6LF22 9V 1604A battery, please use battery with the same model, and do
not use unauthorized battery.
- Pay attention to the anode “+” and the cathode “-”. After completing installation, install the
cover and tighten the screw.
2. General maintenance
- When the surface of luxometer is dirty, clean with wet cloth and neutral detergent, grinding
miller and solvent are forbidden.
- When the luxometer is damaged and needs to be repaired, please send it to the designated
