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3
Lux
Operation
1. Select Units (Lux or Ft-candle) and the Response Time (Fast/Slow) using the slide switch. Typical
selection is Slow and Fc using the gray lettering.
2. Select the maximum range using the Range Switch.
3. Hold the Light Sensor so that the sensor faces the light source to be measured.
4. The display will indicate measured values. Use a range display multiplier if on the Lux 20,000 and
50,000 ranges or on the Fc 5000 range (see notes below).
5. To hold (freeze) a measurement, slide the Data Hold Switch to the Hold position. The reading will
freeze in the display until the Data Hold Switch is released.
Note 1: An Over Range indication is a display of "1__ ". If this occurs, switch to a higher range.
Note 2: For measurements made on the Fc 5000 range, the displayed reading must be multiplied by
10.
Note 3: For measurements made on the Lux 20000 or 50000 ranges the displayed reading must be
multiplied by 10 and 100 respectively.
Note 4: The meter will indicate values above the maximum ranges. The accuracy of these
measurements is unknown.
Range Display Multipliers
Range
Units
Multiplier
200
Fc
Direct reading
2000
Fc & Lux
Direct reading
5000
Fc
Reading x10
20,000
Lux
Reading x10
50,000
Lux
Reading x100
Example: If a measurement on the 5000 Fc range displays 350 the actual measured value is:
350 x 10 = 3500 Fc.
