Typical Light Levels; Spectral Sensitivity - Extech Instruments LT300 User Manual

Appendix

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
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
75-150 7-15 Indoors
150-200 15-20 Corridor/Stairs
200-300 20-30 Reception
300-500 30-50 Display Stand
500-750 50-75 Elevator
750-1,500 75-150 Show Window,
Packing Table
1,500-3,000 150-300 Storefront, Show Window

Spectral Sensitivity

R
e
1
l
a
t
0.8
i
v
e
0.6
R
e
s
0.4
p
o
n
0.2
s
e
400 450
0
- - - - - Light Meter Response
Air Concern Ltd, Building 173 Curie Avenue Harwell Didcot, Oxfordshire
Lux
Candles
100-150
150-200
200-300
300-500
500-1,500
1,000-2,000 100-200 Sewing
O ce
75-150
150-300
300-750
750-1,500
Store
30-75
75-100
100-150
150-200
200-750
750-1,500
5,000-10,000 500-1000 Eye Inspection
500 550 600
Wavelength (nm)
_____
CIE Response
more info for
Phone: 01235 838 555
Email: cs@airconcern.co.uk
Web: www.airconcern.co.uk
Foot
Home
10-15 Washing
15-20 Recreational
Activities
20-30 Drawing Room,
Table
30-50 Makeup
50-150 Reading, Study
Restaurant
7-15 Corridor Stairs
15-30 Entrance,
Wash Room
30-75 Cooking Room,
Dining Table
75-150 Show Window
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
650 700
Extech LT300