digital illuminance meter instruction manul ax-l230

digital illuminance meter instruction manul ax-l230
DIGITAL ILLUMINANCE METER
INSTRUCTION MANUL
AX-L230
REL
OPERATION MANUAL
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 construction.
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 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 41 segment bargraph.
Measuring Range: 40.00 lux, 400.0 lux, 4000 lux, 40.00 Klux and 400.0 Klux /40.00 fc, 400.0
fc,4000 fc,40.00 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’ 6%
Cosine Response: f2’ 2%
Accuracy: ±5% rdg±10d.(<10,000Lux)
±10% rdg±10d.(>10,000Lux)
Repeatability: ±3%
Sampling Rate: 1.5 times/sec of analog bar-graph indication; 1.5 times/sec of digital display.
Photo Detector: One silicon photo diode and spectral response filter.
Operating temperature & Humidity: 0°C to 40° C(32°F to 104°F) & 0% to 80% RH.
Storage Temperature & Humidity: -10°C to 50° C(14°F to 140°F) & 0% to 70% RH.
Power Source: 1 piece 9V battery.
Photo detector Lead Length: 150cm (approx.);
Photo detector Dimensions: 115L×60W×20H(mm);
Meter Dimensions: 203L×75W×50H;
Weight: 280g.
Accessories: Carry case, instruction manual, battery.
2
IV NAME OF PARTS AND POSITIONS
1
2
8
3
4
5
6
REL
9
7
10
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. Lux key: Pressing the lux key selects taking measurement of illuminance in lux scale
3. Fc key: Pressing the fc key selects taking measurement of illuminance in footcandle scale; and,
1 footcandle= 10.76lux.
4. RANGE Selector key: It indicates 40.00 lux, 400.0 lux,4000 lux,40.00 Klux and 400.0 Klux /40.00
fc,400.0 fc,4000 fc,40.00 Kfc total 5 ranges for lux and 4 ranges for fc.
5. REL key: Relative reading control key.
6. MAX/MIN key: Maximum and minimum reading recorder control key.
7. PEAK Hold key: Peak Hold recorder control key.
8. BACK-LIGHT key: Back light control key.
9. Data-HOLD key: Data Hold control key.
10. Power Control key: The power switch key turns the illuminance meter ON or OFF.
11. Photo detector.
V OPERATING INSTRUCTIONS
1. Power-up: Press the power key to turn the meter ON or OFF.
2. connect the photo detector.
3. Selecting the lux or fc scale: Set the range selection switch to desired lux or fc range.
4. Remove the photo detector cap and face it light source in a horizontal position.
5. read the illuminance nominal from the LCD display.
6. Overrange: If the instrument only displays “OL”, the input signal is too strong, and a higher range
should be selected.
7. 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.
8. 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.
3
9. 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 to exit this mode.
10. 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.
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.
VII SPECTRAL SENSITIVITY CHARACTERISTIC
To the detector, the applied photo diode with filters makes the spectral sensitivity characteristic
almost meet C.I.E.(INTERNATIONAL COMMISSION ON ILLUMINATION) Photopic curve V (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 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
Conference,Reception room
Lux
fc
200~750
18~70
4
Clerical work
700~1,500
65~140
Typing drafting
1,000~2,000
93~186
Visual work at production line
300~750
28~70
Inspection work
750~1,500
70~140
Electronic parts assembly line
1,500~3,000
140~279
Packing work, Entrance passage
150~300
14~28
Public room, Cloakroom
100~200
9~18
Reception
200~500
18~47
Cashier
750~1,000
70~93
Indoors Stairs Corridor
150~200
14~18
Show window, Packing table
750~1,500
70~140
Forefront of show window
1,500~3,000
140~279
Sickroom, Warehouse
100~200
9~18
Medical Examination Room
300~750
28~70
Operating room, emergency
treatment
750~1,500
70~140
Auditorium,Indoor Gymnasium
100~300
9~28
Class room
200~750
18~70
Laboratory, Library, Drafting,
room
500~1,500
47~140
FACTORY
HOTEL
STORE
HOSPITAL
SCHOOL
5
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