Measuring Procedures; Other Functions - Lutron Electronics LM-81LX Operation Manuals

4. MEASURING PROCEDURE
1) Power on the instrument by pressing the " Power Button "
( 3-1, Fig. 1 ).
2) Position the " Light Sensor " ( 3-6, Fig. 1 ) directly under the
light source. At the mean time the light reading value will be
displayed on the LCD display.
3)Press the " Lux/Ft-cd Button " ( 3-5, Fig. 1 ) to
select measuring unit " Lux " or " Ft-cd ".
Zero Offset Adjustment of Light Function :
*
Whenever reverse the meter and blank the light sensor
with a desktop or any other flat surfaces and press the
" Zero Button (3-4, Fig 1) " to finish the zero offset
adjustment.
*
Zero point might drift away because of environment
temperature change, battery power change or any other
reasons. Whenever above zero offset adjustment
procedures are recommended to be done for the most
precise measurement if the zero point drifted away

5. OTHER FUNCTIONS

5-1 Hold Function
Whenever press the "Hold Button " ( 3-2, Fig. 1 ) will freeze
the current reading value with a "HOLD" symbol on the
display.
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