USER'S MANUAL
DIGITAL
LUXMETER
CONTENTS
1. FEATURES 3
2. FRONT PANEL DESCRIPTION.. 4
3.SPECIFICATIONS.. 5
Your purchase of this Digital Luxmeter
marks a step forward for you into the field of
precision measurements. Although this
Luxmeter is a complex and delicate
instrument, its ruggedness will allow many
years. Of use if proper operating techniques
are developed. Please read the following
instructions carefully and always keep this
manual within easy reach.
3-1 Technical Specifications. 5
3-2 General Specifications. 6
3-3 Correction Factor. 7
4. SPECTRUM FOR PHOTO DETECTOR 7
5. MEASURING PROCEDURE.. 8
6. MAINTENANCE. 9
6-1 General maintenance 9
6-2 Battery Replacement 9
7. RECOMMENDED ILLUMINATION. 10
Digital Luxmeter
Digital Luxmeter
1. FEATURES
2. FRONT PANEL DESCRIPTION
* Precise and easy readout.
* High accuracy and wide measurement range.
* LSI-circuit use provides high reliability and durability.
* In build LOW BATTERY indicator.
* LCD display allows clear read out even at bright
places.
* LCD display provides low power consumption.
* Compact, lightweight, and excellent operation.
* Separate PHOTO DETECTOR allows user take
measurements at an optimum position.
* Data Hold function for holding measuring values.
Digital Luxmeter
Digital Luxmeter
HOLD key
Low Battery Indicator:
Photo Detector
The "
LCD display
the proper operation range.
" is displayed when the battery is under
Function switch
Photo Detector Lead Length: 150cm(approx.)
POWER key
Photo Detector Size: 835220.5mm
Dimension: 125.5(L)72(W)27(H)mm
3. SPECIFICATIONS
Weight: 140g approx. (battery removed)
3-1 General Specification
Accessories: Carrying case, battery, user's manual
Environment Conditions:
3-2 Technical Specification
Operating Temperature:
Accuracy:
0 to 4080% RH, non-condensing
(% of reading + number of digits) at 18OC to
Storage Temperature:
28OC (64OF to 82OF) with relative humidity to 80%.
-10 to 60 70% RH, battery removed
Range
0-1,999 Lux
2,000-19,990 Lux
20,000-50,000 Lux
Operating principle: dual slop integration
Sample Rate: 2 times/sec for digital data
Display:
3 1/2 digits LCD Display with max. Reading 1999,
Resolution
1 Lux
10 Lux
100 Lux
accuracy
(5%+2d)
(5%+2d)
(5%+2d)
NOTE: Accuracy tested by a standard parallel light
o
Over-range Display: "1" is displayed.
tungsten lamp of 2854 K temperature
Power Supply:
DC 9V battery (NEDA 1604 6F22 006P).
Digital Luxmeter
Digital Luxmeter
3-3 Correction Factor
Mercury Lamp ...
Fluorescent Lamp..
Incandescent Light
Daylight
5. MEASURING PROCEDURE
x
x
x
x
1.1
1.0
1.0
1.0
Power-up: Press the POWER key to turn the
meter on.
Selecting the LUX scale: Set the Function switch
to desired LUX range.
Face the photo detector to light source in a
4. SPECTRUM FOR PHOTO DETECTOR
horizontal position.
Read the illuminance value from the LCD display.
Data-Hold mode: Press the HOLD key to select
Hold mode. When HOLD mode is selected, the
illuminance meter stops all further measurements.
Press the HOLD key again to cancel HOLD mode.
Then it resumes normal operation.
When the measurement is completed, turn the
power off.
NOTE: If display indicates one or more leading
zeros, user has to shift the Function switch
to the next lower range scale to improve
resolution and accuracy.
Digital Luxmeter
Digital Luxmeter
6. MAINTENANCE
7. RECOMMENDED ILLUMINATION
6-1 General maintenance
LOCATIONS
To keep the instrument clean, wipe the case with
a dry cloth and detergent, do not use abrasives or
solvents.
The white plastic disc on the top of the detector
should be cleaned with a damp cloth when
necessary.
Any adjustment maintenance and repair shall be
by a qualified person.
6-2 Battery Replacement
When the battery voltage drop below proper
operation range the
symbol will appear on
Lux
OFFICE
Conference, Reception room.
200
~ 750
Clerical work
700
~ 1500
Typing, drafting
1000 ~ 2000
FACTORY
Packing work, Entrance passage
150
~ 300
Visual work at production line
300
~ 750
Inspection work
750
~ 1500
Electronic parts assembly line
1500 ~ 3000
HOTEL
Public room, Cloakroom
100
~ 200
the LCD display and the battery need to be
Reception, Cashier
200
~ 1000
replaced..
STORE
Indoors, Stairs, Corridor
150
~ 200
Show windows, Packing table
750
~ 1500
Forefront of show windows
1500 ~ 3000
Slide the battery cover away from the instrument
and remove the battery.
Replace with 9V battery and reinstall the cover
Digital Luxmeter
10
Digital Luxmeter
LOCATIONS
Lux
HOSPITAL
Sickroom, Warehouse
100
~ 200
Medical Examination room
200
~ 750
Operating room
750
~ 1500
Emergency Treatment
750
~ 1500
Auditorium, Indoor Gymnasium
100
~ 300
Class room
300
~ 750
Laboratory, Library, Drafting room
750
~ 1500
SCHOOL
Digital Luxmeter
11
