Sper Scientific 850068 Hybrid Powered Environmental Meter - Manual (Page 12)

- 12 -
POWER TYPE SELECTION
Battery Power Selection
1. Ensure that you have correctly installed
the 9V battery in the battery
compartment. (Refer to Battery
Replacement page 22).
2. Slide the Power Type Switch down to
the B position to use the meter’s
battery power source instead of Green
power.
Note…
The battery life is greater than 1000 hours
when using alkaline batteries (250 hours
when using general purpose batteries).
Light-Level Measurement
1. Press POWER to turn the meter on.
2. Press FUNCTION until the meter
displays the Lux or Ft-cd light-level
measuring unit.
3. Press LUX/FT-CD to select between
Lux and Ft-cd.
4. To ensure measurement accuracy,
calibrate the light meter using the Zero-
Offset adjustment feature. To
calibrate:
MEASUREMENT PROCEDURES