English User's Manual

USER MANUAL
Model 401027
Pocket Foot Candle Light Meter
Introduction
Congratulations on your purchase of the Extech Pocket Foot Candle Light Meter which measures
and displays light intensity in foot candle units. Two ranges can be selected (200.0 and 2000 Fc). The
precision color-corrected photo-diode sensor provides 5% accuracy. This device is shipped fully
tested and calibrated and, with proper use, will provide years of reliable service. Please visit our
website (www.extech.com) to check for the latest version of this User Guide, Product Updates, and
Customer Support.
Meter Description
1.
Display
2.
ON/OFF switch
3.
A-B Range switch
4.
Light sensor
1
2
3
4
Meter Operation
1. Slide the ON/OFF Switch to the ON position.
2. Fold out the meter's rear tilt stand and set the meter on a desktop.
3. Select range ‘B’.
4. Hold the Light Sensor with the white lens facing the light source to be measured. The sensor can
also be placed on the desktop facing in the direction of the light source.
5. Read the light measurement on the LCD display.
6. If the measurement is less than 200 fc, select the lower ‘A’ range.
Battery Replacement
The low battery indicator "LO BAT" appears on the LCD display when it is nearing the time to
replace the 9V battery. Reliable readings can still be obtained for several hours after the first
appearance of the low battery indicator. To replace the batteries:
1. Slide the rear battery compartment cover off of the meter and remove the old battery
2. Replace the battery and reinstall the compartment cover
You, as the end user, are legally bound (EU Battery ordinance) to return all used
batteries, disposal in the household garbage is prohibited! You can hand over your
used batteries / accumulators at collection points in your community or wherever batteries /
accumulators are sold!
Disposal: Follow the valid legal stipulations in respect of the disposal of the device at the
end of its lifecycle
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Typical Light Levels for Work Areas
Factories
Office
Store
Home
Restaurant
Hospital
Emergency Stairs, Warehouse
Foot Candles
Lux
2 to 7
20 to 75
Exit/Entrance Passages
7 to 15
75 to 150
Packing Work
15 to 30
150 to 300
Visual Work: Production Line
30 to 75
300 to 750
Typesetting:Inspection Work
75 to 150
750 to 1,500
Electronic Assembly, Drafting
150 to 300
1,500 to 3,000
Indoor Emergency Stairs
7 to 10
75 to 100
Corridor Stairs
10 to 20
100 to 200
Conference,Reception Room
20 to 75
200 to 750
Clerical Work
75 to 150
750 to 1,500
Typing, Drafting
150 to 2000
1,500 to 2,000
Indoors
7 to 15
75 to 150
Corridor/Stairs
15 to 20
150 to 200
Reception
20 to 30
200 to 300
Display Stand
30 to 50
300 to 500
Elevator
50 to 75
500 to 750
Show Window, Packing Table
75 to 150
750 to 1,500
Storefront, Show Window
150 to 300
1,500 to 3,000
Washing
10 to 15
100 to 150
Recreational Activities
15 to 20
150 to 200
Drawing Room, Table
20 to 30
200 to 300
Makeup
30 to 50
300 to 500
Reading, Study
50 to 150
500 to 1,500
Sewing
100 to 200
1,000 to 2,000
Corridor Stairs
7 to 15
75 to 150
Entrance, Wash Room
15 to 30
150 to 300
Cooking Room, Dining Table
30 to 75
300 to 750
750 to 1,500
Show Window
75 to 150
Emergency Stairs
3 to 7
30 to 75
Stairs
7 to 10
75 to 100
Sick Room, Warehouse
10 to 15
100 to 150
Waiting Room
15 to 20
150 to 200
Medical Examination Room
20 to 75
200 to 750
Operating/Emergency Room
75 to 150
750 to 1,500
Eye Inspection
500 to 1000
5,000 to 10,000
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Light Sensor Spectrum
1
0.8
0.6
0.4
0.2
0
300
400
500
600
700
800
Wavelength (nm)
Specifications
Circuit
Custom LSI microprocessor based design
Display
13mm (0.5") 3.5 digit (1999 count) LCD display
Sensor
Photo-diode with color correction filter (meets CIE regulations)
Out of range indication
'1 ' is displayed
Sampling time
Approx. 0.4 seconds
Power Supply
9V battery
Power consumption
Approx. 2.7mA
Operating temperature
0 C to 50 C (32 F to 122 F)
Operating Humidity
< 80% RH
Weight
195g (0.43 lbs.)
Dimensions
Meter: 131 x 70 x 25mm (5.2 x 2.8 x 1")
o
o
o
o
Probe: 82 x 55 x 7mm (3.2 x 2.2 x 0.3")
Accessories
Probe and 9V battery
Range Specifications
Range
Resolution
0 to 199.9 Fc
0.1 Fc
200 to 1999 Fc
1 Fc
Accuracy
± (5% + 4 digits) Full Scale
Copyright © 2013 FLIR Systems, Inc. All rights reserved including the right of reproduction in whole or in part in any form www.extech.com 4
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