LD 500_SHORT BAL_V2.03 EN Page 13 of 20
Option 2 – Patrol the compressed air network.
Alternatively, in case of increased noise, leakage
detection can be facilitated by the user listening to
the compressed air network "bit by bit".
This means from the compressor room to the end
user. If noise is detected, it is recommended to
manually reduce the sensitivity of the device and
to use the gooseneck for small distances, and the
parabolic mirror for larger distances. The following
also applies to this method in general: The shorter
the distance to the pipe, the easier it is to detect a
leakage.
Option 3 – Leakage detection during production stoppage
Production and manufacturing processes may give rise to ultrasound noises at times. If, for example,
a pneumatic system blows off air at regular intervals, the LD 500 picks up on this.
If leakage detection is severely impeded by these interfering noises, it is recommended to perform
leakage detection according to Option 1 or Option 2, if the pipes are pressurised but the manufacturing
processes have been stopped. These are the quickest and easiest ways to detect leakages.
Other problems that can make measuring more difficult
There may be further problems in leakage detection, these are de-
scribed in the following sub-chapter.
To reduce any problems, we generally recommend to use the correct
attachment, as outlined in chapter 6.4 Selection of accessories, and to
reduce the sensitivity.
Reflections: If leakages can be heard in walls but there are no pipes,
this is a reflected ultrasound of a leakage. In this case, it is recom-
mended to reduce sensitivity (manually switch to a higher range until
it can no longer be heard). Additionally, aim should be taken in a direc-
tion parallel to the reflection surface as this is where the leakage is lo-
cated. The leakage will be noisier than the reflected ultrasound.