digital illuminance meter model 1308 instruction manul

digital illuminance meter model 1308 instruction manul
DIGITAL ILLUMINANCE METER
MODEL 1308
INSTRUCTION MANUL
Ⅰ INSTRUCTION
The digital illuminance meter is a precision instrument
used to measure illuminance (lux, footcandle) in the
field.
It is meet CIE photopic spectral response.
It is fully cosine corrected for the angular incidence of
light.
The illuminance meter is compact, tough and easy to
handle owing to its constrution.
The light sensitive component used in the meter is a
very stable, long-life silicon photo diode and spectral
response filter.
Ⅱ FEATURES
Light-measuring
levels
ranging
form
0.01lux~0.1klux/0.01fc~0.01kfc,repeatedly.
High accuracy and rapid response.
Data-hold function for holding measuring values.
Unit and sign display for easy reading.
Automatic zeroing.
Meter corrected for spectral relative efficiency.
Correction factor need not be manually calculated for
2
non-standard light sources.
Short rise and fall times.
Peak-hold function for tracing the peak signal of light
pulse with least duration 10µs and keep it.
Capable of selecting measuring mode in lux or fc scale
alternatively.
Auto power off 30 minutes.
Maximum and minimum measurements.
Relative reading & Reset function.
Easy to read large backlit display
Ⅲ SPECIFICATIONS
Display :3-3/4 digit LCD with high speed 42 segment
bargraph.
Measuring Range:40.00 lux,400.0 lux,4000 lux,40.00
Klux and 300.0 Klux /40.00 fc,400.0 fc,4000 fc,30.00
Kfc.
NOTE: 1fc=10.76lux,1Klux=1000lux,1Kfc=1000fc
Overrange Display: LCD will show “OL” symbol.
Spectral Response: CIE Photopic. (CIE human eye
response curve).
Spectral Accuracy: CIE Vλ function f1’
3
≦6%
≦2%
Accuracy: ±5% rdg±0.5% f.s.
Repeatability: ±3%
Cosine Response: f2’
Sampling Rate: 13.3 times/sec of analog bar-graph
indication;1.3times/sec of digital display.
Photo Detector: One silicon photo diode and spectral
response filter.
Operating temperature & Humidity :
0
℃ to 40℃(32℉to 104℉) & 0% to 80% RH.
Storage Temperature & Humidity :
-10
℃ to 50℃(14℉ to 140℉) & 0% to 70% RH.
Power Source: 1 piece 9V battery.
Photo detector Lead Length: 150cm (approx.);
×60W×20H(mm);
Meter Dimensions: 170L×80W ×40H;
Photo detector Dimensions: 115L
Weight: 390g.
Accessories: Carry case, instruction manual, battery.
4
Ⅳ NAME OF PARTS AND POSITIONS
1
2
3
7
4
8
5
9
6
10
12
11
1.
LCD Display: 3-3/4 digit displays with a maximum
reading of 3999,and the indicating signs of measured
values, unit function symbols and decimal points etc are
display.
2.
Range Selector key: It indicates 40.00 lux, 400.0
lux,4000 lux,40.00 Klux and 300.0 Klux /40.00 fc,400.0
fc,4000 fc,30.00 Kfc total 5 ranges for lux and 4 ranges
5
for fc.
3.
Power Control key:
The power switch key turns the
illuminance meter ON or OFF.
4.
MAX/MIN key: Maximum and minimum reading recorder
control key.
5.
RESET key:
6.
BACK-LIGHT key: Back light control key.
7.
REL key: Relative reading control key.
8.
Data-Hold key: Data Hold control key.
9.
Peak Hold key: Peak Hold recorder control key.
10. Lux
key:
Push function reset control key.
Pressing
the
lux
key
selects
taking
measurement of illuminance in lux scale
11. FC key: Pressing the fc key selects taking measurement
of
illuminance
in
footcandle
scale;
and,1footcandle=10.76lux.
12. Photo detector.
Ⅴ OPERATING INSTRUCTIONS
1.
Power-up: Press the power key to turn the meter ON or
OFF.
2.
Selecting the lux or fc scale: Set the range selection
switch to desired lux or fc range.
6
3.
Remove the photo detector cap and face it light source
in a horizontal position.
4.
read the illuminance nominal from the LCD display.
5.
Overrange: If the instrument only displays “OL”, the
input signal is too strong, and a higher range should be
selected.
6.
Data-Hold mode: Press the hold key to select Data-Hold
mode. When HOLD mode is selected, the illuminance
meter stops all further measurements. Press the HOLD
key again to exit Data-Hold mode. Then it resumes
normal operation.
7.
Peak-Hold recorder mode: Press and hold down PEAK
key until display shown the “CAL” letter, then press
PEAK key cycle through Pmax and Pmin recorder mode,
and expose the photo detector to light pulse measuring
field. Press and hold down PEAK key 2 seconds to exit
PEAK recorder mode, then the meter will resume
normal operation.
8.
Maximum
and
Minimum
recorder
mode:
Press
MAX/MIN key to cycle through Maximum(MAX) reading,
Minimum(MIN) reading and current reading(MAX/MIN
blink) recorder mode. Press MAX/MIN key two seconds
7
to exit this mode.
9.
Relative reading mode: Press REL key to enter Relative
mode. The display shown zero value and the current
reading will be stored as a zero-in value. Press again to
exit this mode.
10. Reset mode: Every time when this key is pressed the
pushed
function(HOLD,MAX/MIN,REL,PEAK
except
BACK-LIGHT) ,auto-power-off function and counter will
be reset.
11. Back-light function:
Press the Backlight key to turn on.
Press again to turn off.
12. When the measurement is completed, replace the photo
detector cap and turn the meter off.
Ⅵ BATTERY CHECK-UP & REPLACEMENT
1.
As the battery power is not sufficient, LCD will display
low battery, and replacement of one new battery is
required.
2.
After turning off the meter, disconnect the battery cover
with a screwier.
3.
Disconnect the battery from the instrument and replace
it with a standard 9V battery and go for the cover.
8
Ⅶ SPECTRAL SENSITIVITY CHARACTERISTIC
To the detector, the applied photo diode with filters
makes
the
almost
spectral
meet
sensitivity
characteristic
C.I.E.(INTERNATIONAL
COMMISSION ON ILLUMINATION)
curve V (
Photopic
λ) as the following chart described.
Ⅷ 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
tip of the photo detector globe.
4.
The calibration interval for the photo detector will vary
according to operational conditions, but generally the
9
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.
Ⅸ RECOMMENDED ILLUMINATION
1fc=10.76Lux
LOCATIONS
OFFICE
Lux
fc
200~750
18~70
Clerical work
700~1,500
65~140
Typing drafting
1,000~2,000
93~186
Visual work at
300~750
28~70
Inspection work
750~1,500
70~140
Electronic parts
1,500~3,000
140~279
150~300
14~28
100~200
9~18
200~500
18~47
Conference,Recepti
on room
FACTORY
production line
assembly line
Packing work,
Entrance passage
HOTEL
Public room,
Cloakroom
Reception
10
STORE
Cashier
750~1,000
70~93
Indoors Stairs
150~200
14~18
750~1,500
70~140
1,500~3,000
140~279
100~200
9~18
300~750
28~70
750~1,500
70~140
100~300
9~28
Class room
200~750
18~70
Laboratory, Library,
500~1,500
47~140
Corridor
Show window,
Packing table
Forefront of show
window
HOSPITAL
Sickroom,
Warehouse
Medical Examination
Room
Operating room,
emergency
treatment
SCHOOL
Auditorium,Indoor
Gymnasium
Drafting, room
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