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METPOINT
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CID
11.2 Possible causes of leaks
When dealing with compressed air systems, leaks can be usually found at connecting elements.
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Leaky couplings and hose clamps
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Leaky gaskets
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Porous / faulty hoses
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Porous / faulty seals on tools and machines
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Faulty condensate drains
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Leaky or incorrectly installed dryers, filters, service units
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etc.
11.3 Leak pinpointing procedure
The specific approach recommended for pinpointing leaks depends on the specific ambient conditions in question.
Option 1 – from which direction can you hear a leak?
When using this method, you should point in all directions until you find the loudest point. After this, you should move
in the direction of the loudest point in order to be able to accurately pinpoint the leak.
This option works well when there is little noise.
Option 2 – Walking along the compressed air system.
Alternatively, if there is more noise, you can make it easier to pinpoint the leak by "moving along and listening to the
compressed air system bit by bit." That is, from the compressor room all the way to the end points. If there is noise, it
is recommended to manually reduce the device's sensitivity and use either the gooseneck for short distances or the
parabolic mirror for long distances.
In addition, the following generally applies when using this method: The shorter the distance from line, the easier it
will be to pinpoint the leak.
Option 3 – Searching for leaks while production is stopped
Production processes can result in ultrasonic noise in certain cases. If, for example, a pneumatic system blows off air
on a regular basis, the METPOINT
If noise makes pinpointing leaks significantly harder, it is recommended to use option 1 or option 2 if the lines are
pressurized but the corresponding production processes are stopped. This is the easiest and fastest way to find leaks.
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CID will detect the corresponding noise.
®
Original installation and operation manual
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