407026 Datasheet, PDF (7/8 Pages) Extech Instruments Corporation. – Heavy Duty Meter

Typical Light Levels
Lux
Foot
Candles
Factories
20-75
2-7
Emergency Stairs,
Warehouse
75-150
7-15
Exit/Entrance Passages
150-300 15-30 Packing Work
300-750 30-75 Visual Work: Production Line
750-1,500 75-150 Typesetting: Inspection Work
1,500-
3,000
150-300 Electronic Assembly, Drafting
Office
75-100
7-10
Indoor Emergency Stairs
100-200 10-20 Corridor Stairs
200-750 20-75 Conference, Reception Room
750-1,500 75-150 Clerical Work
1,500-
2,000
150-2000 Typing, Drafting
Store
75-150
7-15
Indoors
150-200 15-20 Corridor/Stairs
200-300 20-30 Reception
300-500
500-750
750-1,500
1,500-
3,000
30-50
50-75
75-150
150-300
Display Stand
Elevator
Show Window, Packing Table
Storefront, Show Window
Lux
100-150
Foot
Candles
Home
10-15
Washing
150-200
15-20
200-300
20-30
300-500
30-50
500-1,500 50-150
1,000-2,000 100-200
Recreational Activities
Drawing Room, Table
Makeup
Reading, Study
Sewing
75-150
150-300
300-750
750-1,500
7-15
15-30
30-75
75-150
Restaurant
Corridor Stairs
Entrance, Wash Room
Cooking\Dinning Room
Show Window
30-75
75-100
100-150
150-200
200-750
750-1,500
5,000-
10,000
Hospital
3-7
Emergency Stairs
7-10
Stairs
10-15
Sick Room,
Warehouse
15-20
Waiting Room
20-75
Medical Exam Room
75-150 Operating Room
500-1000 Eye Inspection
Common Conversion Factors
Illuminance (Visible Flux Density)
Luminance (Visible Flux Density per Solid Angle)
Luminous Intensity (Visible Flux per Solid Angle)
Luminous Flux ( Visible Flux)
1 lm/m2 =
1 lm/m2/sr =
1 lm/sr =
1 lumen (lm) =
1 lux (lx)
10-4 lm/cm2
10-4 phot (ph)
9.290 x 10-2 lm/ft2
9.290 x 10-2 foot-candles
1 candela/m2
1 candella
1.464 x 10-3 watts @ 555 nm
7
Model 407026 Version 2.3 January 2004