UEi Test Instruments DLM2 User Manual
Page 2
Introduction
The DLM2 is designed to measure light levels in foot-candles or lux
over 3 ra n g e s .
Features include
• 0 - 5000 foot-candles
• Over 3 lux ranges
• Accurate to ±5% with a 0.4 second sampling rate
• Easy to read LCD display
C o n t rols and Indicators
1. Digital Display
2. OFF/ON Switch
3. LUX/FC Switch
4. Range Switch
5. Battery Compartment/Cover
6. Light Sensor
Operating Instructions
Measuring Procedure
1. Slide the “OFF/ON” switch to the “ON” position.
2. Determine lux or foot candle (FC) on the “LUX/FC” switch.
3. Select the maximum range on the “RANGE” switch.
4. Hold the “Light-Sensor” by hand and face the measuring light
oppositely. The display will show light values directly.
Measuring Consideration
1. As the rang B (2000 - 19990 LUX, 200 - 1999 FC) is designed and
to measure the light values ≥ 2000 LUX (200 FC). So if the
measured light values are less than 2000 LUX (200 FC), select the
“RANGE” switch to the lower range to get high resolution and
precision. Otherwise the display may show some value readings
but may not be correct.
2. As the range C (20000 - 50000 LUX, 2000 - 5000 FC) is designed
to measure the light values ≥ 20000 LUX (2000 FC). If the
measured light values are less than 20000 LUX (2000 FC), select
the “RANGE” switch to the lower range to get high resolution and
precision. Otherwise the display may show some value readings
but may not be correct.
M a i n t e n a n c e
Periodic Service
WARNING!
Repair and service of this instrument is to be performed by qualified
personnel only. Improper repair or service could result in physical
degradation of the meter. Perform only those maintenance tasks that
you are qualified to do.
These guidelines will help you attain long and reliable service from
your meter:
• Calibrate your meter annually to ensure it meets original
performance specifications
• Keep your meter dry. If it gets wet, wipe dry immediately.
Liquids can degrade electronic circuits
• Whenever practical, keep the meter away from dust and
dirt that can cause premature wear
• Although your meter is built to withstand the rigors of daily
use, it can be damaged by severe impacts. Use reasonable
caution when using and storing the meter
DLM2-MAN
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