User Manual

value, and the “DH” sign will appear on the
display, press it again to exit.
Ⅳ OPERATION INSTRUCTIONS:
1. Connect the battery, and then press the button to
“ON”
2. Remove the photo detector cap and face it to
light source in a horizontal position.
3. Read the test value from the LCD display.
4. Over range: if the instrument only display one
“OL” in the LCD, the input signal is too strong,
and a higher range should be selected.
5. Data-Hold mode: press the HOLD key to select
Hold model. When HOLD mode is selected, the
LUX meter stops all further measurements and
the test value with hold on the LCD. Press the
button “HOLD” to the “ON”, the hold value will be
cancelled.
6. When the measurement is completed, replace
the photo detector cap and turn the power
selector OFF.
7. When testing on strong light source(over 100k
lux),the measure head need to close to light
source slowly for measure .if can't test,move
measure head away and test it again
Ⅴ BATTERY CHECK-UP & REPLACEMENT:
1. It is necessary to replace another one 9V battery,
when left corner of LCD display show“ ”.
2. After turning off the meter, press the battery
cover and push in the direction of the arrow to
open.
3. Disconnect the batter from the instrument and
replace it with a standard 9-volt transistor battery
and go for the cover.
Ⅵ SPECTRAL SENSITIVITY CHARACTERISTIC:
Ⅶ MAINTENANCE:
1. The white plastic disc on the top of the detector
should be cleaned with a damp cloth when
necessary.
2. Do not store the instrument where temperature
or humidity is excessively high.
3. The reference level, as marker on the face plate,
is the tiof thep photo detector globe.
4. The calibration interval for the photo detector will
vary according to operational conditions, but
generally the sensitivity decreases in direct
proportion to the product of luminous intensity by
the operational time. In order to maintain the
basic accuracy of the instrument, periodic
calibration is recommended.
Ⅷ RECOMMENDED ILLUNINATON：
OFFICE
Conference, reception
room
200～750Lux
Clerical work
700～1,500Lux
Typing drafting
1,000～2,000Lux
FACTORY
Packing work,
entrance passage
150～300Lux
Visual work at
production line
300～750Lux
Inspection work
750～1,500Lux
Electronic parts
assembly line
1,500～3,000Lux
HOTEL
Public room,
cloakroom
100～200Lux
Reception, cashier
220～1,000Lux
STORE
Indoors stairs corridor
150～200Lux
Show window, packing
table
750～1,500
Forefront of show
window
1,500～3,000
HOSPITAL
Sickroom, warehouse
100～200Lux
Medical examination
room
300～750Lux
Operation room,
emergency treatment
750～1,500Lux
SCHOOL
Auditorium, indoor
gymnasium
100～300Lux
Class room
200～750Lux
Laboratory, library,
drafting room
500～1,500Lux
Above picture and content just for your reference.
Please be subject to the actual products if anything
different or updated. Please pardon for not informing
in advance.
- V (入)
S p ec tral S e n sitivity