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 r ols 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 r
epair 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 P. 1
6
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3
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5
Electrical Specifications
Spectrum For Light Sensor
Cleaning
Periodically clean your meter’s case using a damp cloth. DO NOT use
abrasive, flammable liquids, cleaning solvents, or strong detergents as
they may damage the finish, impair safety, or affect the reliability of the
structural components.
Battery Replacement
Always use a fresh replacement battery of the specified size and type.
Immediately remove the old or weak battery from the meter and
dispose of it in accordance with your local disposal regulations. Batteries
can leak chemicals that corrode electronic circuits. If your meter is not
going to be used for a month or more, remove and store the battery in
a place that will not allow leakage to damage other materials.
To install a new battery, follow these procedures:
1. When the left corner of LCD display indicates “LO BAT”, it is time
to change the battery.
2. Remove battery cover and remove battery.
3. Replace with 9 V battery and reinstall battery cover.
WARNING!
Under no circumstances should you expose batteries to extreme heat or
fire as they may expose and cause injury.
S p e c i f i c a t i o n s
General Specifications
DLM2-MAN P. 2
Display 0.5” (13 mm) LCD, 3-1/2 digits,
Max indication 1999
Measurement Lux - 0 to 50,000 Lux, 3 ranges
Foot candle (FC) - 0 to 5,000 FC, 3 ranges
Sensor The exclusive photo diode and color
correction filter
Over input display Indication of “1”
Operating temperature 32˚ to 122˚F (0˚ to 50˚C)
Operating humidity Less than 80% RH
Power supply 006P DC 9V battery
Power current Approx. DC 2.7 mA
Weight 195 g/0.43 lb. (including battery)
Dimensions 5.2” x 2.8” x 1.0”
(131 mm x 70 mm x 25 mm)
Sensor: 3.2” x 2.2” x 0.3”
(82 mm x 55 mm x 7 mm)
Standard Instruction manual
Accessories Sensor probe
Measurement Range Resolution Accuracy
0 - 1,999 Lux 1 Lux ±(5% + 2 d)
Lux 2,000 - 19,999 Lux 10 Lux ±(5% + 2 d)
20,000 - 50,000 Lux 100 Lux ±(5% + 2 d)
0 - 199.9 FC 0.1 FC ±(5% + 2 d)
Foot candle 200 - 1,999 FC 1 FC ±(5% + 2 d)
(FC) 2,000 - 5,000 FC 10 FC ±(5% + 2 d)
DLM2-MAN P. 3
Adequate Light Levels For Your Working Or At Your Work Areas
10,000 5,000 3,000 2,000 1,500 1,000 750 500 300 200 150 100 75 50 30 20
Factory Electronic parts Typesetting at print shop Visual work at Packing room Exit Indoor emergency stairs
assembly line • Inspection work production line Entrance warehouse
• Drafting Passage • Loading or unloading
work
Office • Typing Clerical work Conference room • Corridor E n t r a n c e Indoor emergency
• Drafting Dinning room • stairs Ware- stairs
Reception room house
House Sewing • Reading M a k e - u p D i n n i n g R e c r e a - Wa s h i n g
• Study t a b l e t i o n a l
a c t i v i t i e s
S t o r e For-front of show • Show window E l e v a t o r D i s p l a y R e c e p t i o n • C o r r i d o r I n d o o r s
w i n d o w • Packing table s t a n d r o o m • stairs
H o s p i t a l E y e O p e r ating room M e d i cal examination room Wa i t i n g S i c k - S t a i r s E m e r g e n cy stairs
i n s p e c t i o n E m e r g e n cy Dinning room r o o m r o o m
Tr e a t m e n t Wa r e -
h o u s e
S c h o o l • Dra f t i n g C l a s s r o o m • Indoor gy m n a s i u m E m e r g e n cy stairs
• Labora t o ry • Auditorium
• Libra r y • Wash room
R e s t a u r a n t S h o w window • Cooking room • Entra n c e • Corridor
• Dinning table • Wash room • Stairs
B a r b e r / • Hair dying • Shaving
B e a u ty parlor • Makeup • Hair washing
• Hair dressing • Dressing
LUXES (1x)
Locations
Limited Warranty
The DLM2 is warranted to be free from defects in materials and workmanship for a
period of one year from the date of purchase. If within the warra n ty period your instrument
should become inoperative from such defects, the unit will be repaired or replaced at UE i ’ s
option. This warra n ty covers normal use and does not cover damage which occurs in ship-
ment or
failure which results from alteration, tampering, accident, misuse, abuse, neglect or improper
maintenance. Batteries and consequential damage resulting from failed batteries are not
covered by warra n ty.
Any implied warranties, including but not limited to implied warranties of merchantability
and fitness for a particular purpose, are limited to the express warranty. UEi shall not be
liable for loss of use of the instrument or other incidental or consequential damages,
expenses, or economic loss, or for any claim or claims for such damage, expenses or
economic loss. A purchase receipt or other
proof of original purchase date will be required
before war
ra n ty repairs will be rendered. Instruments out of warra n ty will be repaired (when
r e p a i r able) for a service charge. Return the unit postage paid and insured to:
This warranty gives you specific legal rights. You may also have other rights which vary from
state to state.
DLM2
Digital Light Meter
Copyright © 2007 UEi DLM2-MAN 1/07
PLEASE
RECYCLE
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
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