manual PCE 172 luxmeter
www.pce-industrial-needs.com
Tursdale Technical Services Ltd
Unit N12B
Tursdale Business Park
Co. Durham
DH6 5PG
United Kingdom
Phone: +44 ( 0 ) 191 377 3398
Fax: +44 ( 0 ) 191 377 3357
[email protected]
http://www.industrial-needs.com/
Manual
DIGITAL ILLUMINANCE
METER PCE-172
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CONTENT
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INSTRUCTION ................................................................................................................. 3
FEATURES ...................................................................................................................... 3
SPECIFICATIONS ........................................................................................................... 3
NAME OF PARTS AND POSITIONS............................................................................... 4
OPERATING INSTRUCTIONS ........................................................................................ 4
BATTERY CHECK-UP & REPLACEMENT ..................................................................... 4
SPECTRAL SENSITIVITY CHARACTERISTIC............................................................... 5
MAINTENANCE ............................................................................................................... 5
RECOMMENDED ILLUMINATION .................................................................................. 5
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1. INSTRUCTION
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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.
2. FEATURES
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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
3. SPECIFICATIONS
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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 :
0ºC to 40ºC(32ºF to 104ºF) & 0% to 80% RH.
Storage Temperature & Humidity :
-10ºC to 50ºC(14ºF to 140ºF) & 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 and battery.
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4. NAME OF PARTS AND POSITIONS
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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.
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5. OPERATING INSTRUCTIONS
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Power-up: Press the power key to turn the meter ON or OFF.
connect the photo detector.
Selecting the lux or fc scale: Set the range selection switch to desired lux or fc range.
Remove the photo detector cap and face it light source in a horizontal position.
read the illuminance nominal from the LCD display.
Overrange: If the instrument only displays “OL”, the input signal is too strong, and a higher range should be
selected.
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.
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.
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.
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.
Back-light function: Press the Backlight key to turn on. Press again to turn off.
When the measurement is completed, replace the photo detector cap and turn the meter off.
6. 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.
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3. Disconnect the battery from the instrument and replace it with a standard 9V battery and go for the cover.
7. SPECTRAL SENSITIVITY CHARACTERISTIC
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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.
8. MAINTENANCE
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The white plastic disc on the top of the detector should be cleaned with a damp cloth when necessary.
Do not store the instrument where temperature or humidity is excessively high.
The reference level, as marker on the face plate, is the tip of the photo detector globe.
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.
9. RECOMMENDED ILLUMINATION
1fc=10.76Lux
OFFICE
FACTORY
HOTEL
STORE
HOSPITAL
SCHOOL
LOCATIONS
Conference,Reception room
Clerical work
Typing drafting
Visual work at production line
Inspection work
Electronic parts assembly line
Packing work, Entrance passage
Public room, Cloakroom
Reception
Cashier
Indoors Stairs Corridor
Show window, Packing table
Forefront of show window
Sickroom, Warehouse
Medical Examination Room
Operating room, emergency treatment
Auditorium,Indoor Gymnasium
Class room
Laboratory, Library, Drafting, room
Lux
200~750
700~1,500
1,000~2,000
300~750
750~1,500
1,500~3,000
150~300
100~200
200~500
750~1,000
150~200
750~1,500
1,500~3,000
100~200
300~750
750~1,500
100~300
200~750
500~1,500
fc
18~70
65~140
93~186
28~70
70~140
140~279
14~28
9~18
18~47
70~93
14~18
70~140
140~279
9~18
28~70
70~140
9~28
18~70
47~140
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In this direction will find a vision of the measurement technique:
http://www.industrial-needs.com/measuring-instruments.htm
NOTE: "This instrument doesn’t have ATEX protection, so it should not be used in potentially explosive
atmospheres (powder, flammable gases)."
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