User Manual

mode.
7. Peak-hold mode: press’PEAK” key to select peak hold mode, LCD display “P-H” symbol.
The meter is sensitive for light pulse signal larger than 100ms and will display max light
intensity. It updates and display new value only when a larger light pulse or light intensity
appear. Press “Peak” button again to exit peak hold mode.
8. After using the insturment, cover photo detector with cap and turn off power.
Ⅴ BATTERY CHECK-UP & REPLACEMENT:
1. when left corner of LCD display show“ ”, a battery replacement is required.
2. After turning off meter, unscrew and open battery cover to replace a new 9V battery.
3. Close battery cover and tighten the screw.
Ⅵ SPECTRAL SENSITIVITY CHARACTERISTIC:
Ⅶ MAINTENANCE:
1. Do not use or store the instrument in extrem high temperature or humidity environment.
2. Keep photo detector clean during usage.
3. The reference level, as marker on the face plate, is the top of photo detector globe.
4. According to operational conditions and time, the sensitivity of meter decreases. In order to
maintain the accuracy of instrument, periodic calibration is recommended.
Ⅷ RECOMMENDED ILLUMINATION：
SCHOOL：
illumination
（Lux）
locale
1500～300
drawing classroom、sartorial room、PC room
750～200
classroom、laboratory、practical factory、lab、library、stack room、office、
retiring room、assembly room、sanitarian room、dining-room、cookroom、
broadcasting room、printing room、guardroom、indoor schoolyard
300～150
big classroom、hall、repository、retiring room、stair well
- V (入)
S p ec tral S e n sitivity