Operation Manual

10/ 2010 BENNING LUXMETER B
25

5. Standard illumination values
Type of
visual task
Practical examples
Normal illumina-
tion (lighting
intensity) in lux
Orientation
Traffic zones, subordinate rooms 20
Filled storage rooms, hallways
in buildings for persons
50
Easyvisual
tasks
Productionplantswithoccasionalactivi-
ties, toilet facilities, engine rooms, traffic
waysforvehiclesinbuildings,stair-
cases,conveyorbelts,medicalrooms
100
Crude works, continuously occu-
pied working places in produc-
tion plants, storage rooms with
reading tasks, canteens
200
Normal
visualtasks
Conference rooms, gymnasiums 300
Offices, medical facilities (urgenices) 500
Technical drawing rooms 750
Difficult
visualtasks
Supervisionplaces,technicaldraw-
ings, open plan offices, assem-
bly rooms, testing stations
1000
Very difficult
visualtasks
Assembly rooms for small com-
ponents, show windows
1500
Table 3: Standard values of inside working environment due to the
DIN 5035 standard
Thenominalvalueslistedabovearereferencevalues.Generallytheyreferto
horizontally working surfaces at a height of 0.85mabove floor and a mean
ageing condition of the lighting.
Condition Illuminance (lux)
Bright sun 50.000 - 100.000
Hazy day 25.000 - 50.000
Cloudy bright 10.000 - 25.000
Cloudy dull 2.000 - 10.000
Very dull 100 - 2.000
Sunset 1 – 100
Good street lighting 20
Poorstreetlighting 0,1
Full moon 0,01 - 0,1
Starlight 0,001 - 0,001
Overcastnight 0,00001 - 0,0001
Table 4: Typical Illuminance levels at outdoor places