Planning
Mask deceptive phenomena
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Building Technologies
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Fire Safety
2018-06-28
4.3 Mask deceptive phenomena
If the monitoring area has deceptive phenomena, you can use masks. There are
two ways of using masks:
Use masks to limit the vision angle of the flame detector such that the detector
does not detect the deceptive phenomenon.
Secure the masks around the deceptive phenomenon so that the detector does
not detect the deceptive phenomenon.
1 Mask
2 Deceptive phenomenon
The masks must be made from non-reflecting material which is impervious to
infrared.
Example: Aluminum sheet 1 mm thick
2
1
