OPERATION
y
The meter is supplied complete with a 9V battery.
Remove the battery compartment cover on the back
of the meter and install the battery into the battery
clip connector while observing polarity.
y
Put the light sensor on a stable surface and the meter
at a proper distance to avoid any interference or
disturb to the sensor illumination.
y
Turn the meter on by pressing the ON/OFF key.
y
Press one of the three “Range keys” to select the
proper scale according to the intensity of the light.
y
“1“ on the LCD indicates that it is necessary to increase
the measure scale. Press the next range key. The
decimal point moves through the display and finally
the correct value is shown.
Range
keys
y
Wait for about 1 second for the reading to stabilize.
y
After about 5 minutes of non-use, the meter shuts off.
Note: Verify the sensor is clean before taking any
measurement.
BATTERY REPLACEMENT
When the battery becomes weak the meter will
display a blinking “ “ low battery indicator.
When it appears, the battery has only about 50
hours of working time left. A low battery will result
in unreliable measurements. Prompt battery
replacement is required.
`
Battery replacement must only take place in a non-
hazardous area using an alkaline 9 V battery.
Turn the meter off, slide the battery compartment
cover located at the rear of the meter off and replace
the 9V battery with a new one.
Make sure the battery contacts are fully engaged in
the connector, seat the battery in its compartment
and replace the cover.
SPECIFICATIONS
RANGE
0.000 - 1999 Lux
2000 - 19999 Lux
20000 - 50000 Lux
RANGE SETTING
Manual
through key buttons
RESOLUTION
0.000 - 1999 Lux
±1 Lux
2000 - 19999 Lux
±10 Lux
20000 - 50000 Lux ±100 Lux
ACCURACY
±6% of reading ±1 digits
PEAK WAVE LENGTH
560 (nm)
SENSOR TYPE
Silicon Photodiode
(connected to meter)
SENSOR SENSITIVITY
100 scotopic Lux
SENSOR STABILITY
±2% change per year
(in first two years)
POWER SUPPLY
1 x 9 V alkaline battery
AUTO-OFF
after about 5 minutes
of non-use
BATTERY LIFE
approximately 150 hours
of continuous use
ENVIRONMENT
0 to 50ºC; RH95%
DIMENSIONS
143 x 80 x 32 mm
WEIGHT
(METER WITH SENSOR) approximately 270 g
