4-2 Measuring Procedure
1. Push the “Power Button” (4-2, Fig. 1) to power on the instrument. The meter will perform a
short self-test before measurements can be taken.
2. Select the desired unit of measurement by pressing the “Lux/Fc Button” (4-5, Fig. 1). The
display will indicate the selected unit of “Lux” or “Ft-cd”.
3. Determine the lighting type (Tungsten, Fluorescent, Sodium or Mercury lamp) by pressing
the “Light Source Select Button” (4-8, Fig. 1). For unknown light types we recommend you use
Tungsten
Note: The LCD display will indicate the selected lighting type with the following symbols:
4. Select the max range by using the “Range Button” (4-6, Fig. 1)
a. If the main display shows “
- - - -
“, it indicates overload condition. Select the next
higher range.
b. If the main display shows “ _ _ _ _ “, it indicates out-of-range. Select the next lower
range.
c. To get the most accuracy from this unit, use the range that will both display the
measured value with the highest resolution.
5. Position the “Light Sensor” (4-13, Fig. 1) directly under the light source.
4-3 Zero Adjust
a. Cover the “Light Sensor” (4-13, Fig. 1) using the “Sensor Cover”
(4-14, Fig. 1). Do not remove the “Sensor Cover”.
b. Set to 40.00 Lux range. (other ranges need not be zeroed)
c. Pushing the “Zero Button” (4-7, Fig. 1) will zero out the LCD display.
d. Upon completion, remove the sensor cover.
4-4 Data Hold
a. During measurements, press the “Hold Button” (4-3, Fig. 1). The data on the LCD
display will be held and the “HOLD” symbol will be displayed.
b. Push the “Hold Button” again to release the data hold function and return the
display to show current readings.
4-5 Peak Hold
a. During a measurement press and hold the “Hold Button” (4-3, Fig. 1) for at least 3
seconds. The mete will now only display and hold the largest measured value along
with the “Peak HOLD” indicator.
b. To clear the peak value momentarily press the “Hold Button” (4-3, Fig. 1).
c. To turn off the Peak Hold function, press and hold the “Hold Button” (4-3, Fig. 1)
for at least 3 seconds.
