401027 V2.0 6/08
3
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
Foot Candles
Lux
Emergency Stairs, Warehouse
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
Factories
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
Office
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
Store
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
Home
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
Restaurant
Show Window
75 to 150
750 to 1,500
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
Hospital
Eye Inspection
500 to 1000
5,000 to 10,000
