401027 Datasheet, PDF (3/4 Pages) Extech Instruments Corporation. – Pocket Foot Candle Light Meter

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
Typical Light Levels For Work Areas
Factories
Office
Store
Home
Restaurant
Hospital
Emergency Stairs, Warehouse
Exit/Entrance Passages
Packing Work
Visual Work: Production Line
Typesetting:Inspection Work
Electronic Assembly, Drafting
Indoor Emergency Stairs
Corridor Stairs
Conference,Reception Room
Clerical Work
Typing, Drafting
Indoors
Corridor/Stairs
Reception
Display Stand
Elevator
Show Window, Packing Table
Storefront, Show Window
Washing
Recreational Activities
Drawing Room, Table
Makeup
Reading, Study
Sewing
Corridor Stairs
Entrance, Wash Room
Cooking Room, Dining Table
Show Window
Emergency Stairs
Stairs
Sick Room, Warehouse
Waiting Room
Medical Examination Room
Operating/Emergency Room
Eye Inspection
Foot Candles
2 to 7
7 to 15
15 to 30
30 to 75
75 to 150
150 to 300
7 to 10
10 to 20
20 to 75
75 to 150
150 to 2000
7 to 15
15 to 20
20 to 30
30 to 50
50 to 75
75 to 150
150 to 300
10 to 15
15 to 20
20 to 30
30 to 50
50 to 150
100 to 200
7 to 15
15 to 30
30 to 75
75 to 150
3 to 7
7 to 10
10 to 15
15 to 20
20 to 75
75 to 150
500 to 1000
Lux
20 to 75
75 to 150
150 to 300
300 to 750
750 to 1,500
1,500 to 3,000
75 to 100
100 to 200
200 to 750
750 to 1,500
1,500 to 2,000
75 to 150
150 to 200
200 to 300
300 to 500
500 to 750
750 to 1,500
1,500 to 3,000
100 to 150
150 to 200
200 to 300
300 to 500
500 to 1,500
1,000 to 2,000
75 to 150
150 to 300
300 to 750
750 to 1,500
30 to 75
75 to 100
100 to 150
150 to 200
200 to 750
750 to 1,500
5,000 to 10,000
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401027 V2.0 6/08