Appendix A: Typical Light Levels; Appendix B - Common Terms And Conversion Factors - Extech Instruments 401025 User Manual

Appendix A: Typical Light Levels

Lux Foot
Candles
20-75 2-7
75-150 7-15
150-300 15-30
300-750 30-75
750-1,500 75-150
1,500- 150-300
3,000
75-100 7-10
100-200 10-20
200-750 20-75
750-1,500 75-150
1,500- 150-2000
2,000
75-150 7-15
150-200 15-20
200-300 20-30
300-500 30-50
500-750 50-75
750-1,500 75-150
1,500- 150-300
3,000

Appendix B - Common Terms and Conversion Factors

Illuminance (Visible Flux Density)
Luminance (Visible Flux Density per Solid Angle)
Luminous Intensity (Visible Flux per Solid Angle)
Luminous Flux ( Visible Flux)
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All rights reserved including the right of reproduction in whole or in part in any form.
Factories
Emergency Stairs,
Warehouse
Exit/Entrance Passages
Packing Work
Visual Work: Production
Line
Typesetting: Inspection
Work
Electronic Assembly,
Drafting
Office
Indoor Emergency Stairs
Corridor Stairs
Conference, Reception
Room
Clerical Work
Typing, Drafting
Store
Indoors
Corridor/Stairs
Reception
Display Stand
Elevator
Show Window, Packing
Table
Storefront, Show Window
www.extech.com
Lux Foot
Candles
100-150 10-15
150-200 15-20
200-300 20-30
300-500 30-50
500-1,500 50-150
1,000- 100-200
2,000
75-150 7-15
150-300 15-30
300-750 30-75
750-1,500 75-150
30-75 3-7
75-100 7-10
100-150 10-15
150-200 15-20
200-750 20-75
750-1,500 75-150
5,000- 500-1000
10,000
1 lm/m 2 = 1 lux (lx)
10 -4 lm/cm 2
10 -4 phot (ph)
9.290 x 10 -2 lm/ft 2
9.290 x 10 -2 foot-candles
1 lm/m 2 /sr = 1 candela/m 2
1 lm/sr = 1 candella
1 lumen (lm) = 1.464 x 10 -3 watts @ 555 nm
5
Home
Washing
Recreational
Activities
Drawing Room,
Table
Makeup
Reading, Study
Sewing
Restaurant
Corridor Stairs
Entrance, Wash
Room
Cooking/Dining
Room
Show Window
Hospital
Emergency Stairs
Stairs
Sick Room,
Warehouse
Waiting Room
Medical Exam Room
Operating Room
Eye Inspection
401025-EU-EN-V2.2-2/12