optris Outdoor protective housing, Operator'S Manual

Page: 11 / 34

Technical Data 11
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2.4 Air Purge Laminar
The lens must be always kept clean from dust, smoke, fumes, and other contaminants in order to avoid reading
errors. These effects can be reduced by using an air purge laminar. Make sure to use oil-free, technically clean
air only.
The needed amount of air (approx. 20...100 l/min.) depends on the application and the installation
conditions on-site. Pipe connection of air purge laminar is 6x4 mm.
2.5 Protective window
Protective window Description Spectral range Transmission
1)
Germanium Protective window (50,8 x 3 mm/ Ge) for PI 450i G7, 640i G7 7,9 µm 0.96
Protective window (50,8 x 3 mm/ Ge) for PI 400i, 450i, 640i 8-14 µm 0.92
Zinc sulfide Protective window (50,8 x 3 mm/ ZnS) for PI 450i G7, 640i G7 7,9 µm 0.93
Protective window (50,8 x 3 mm/ ZnS) for PI 400i, 450i, 640i 8-14 µm 0.91
Protective window (50,8 x 3 mm/ ZnS) for LT models of CTlaser-, CSlaser serie 8-14 µm 0,91
Borofloat Protective window (50,8 x 3 mm/ Borofloat 33) for PI 1M, 08M, 05M 0,85-1,1 µm, 780-820 nm,
500-540 nm 0.92
1)
The displayed values are standard values and can vary between different delivery units.
When using the foil [part number: ACOPHSF] , the transmission must be set on 0.85 (deviations possible).