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Operating manual for LD6000 PTS
Before inserting the sensor head with the fibre optic
cable from the reel, the shut-off valve must again be opened
completely .
m
Before opening the shut-off valve make sure that
all connections have been made correctly.
4.4 Insertion of the fibre optic cable
m
In case of DN50 pipes the fibre optic cable can
be pushed around bends of 90°. Despite this
flexibility and the high breaking load, one has to
exercise utmost caution during every application
with 90° turns.
Should the probe get caught, try loosening it by careful
pushing and pulling . In the course of the insertion process
a very loud scratching noise will be audible via the head-
phones/speaker, which is a result of the pushing . This can
be suppressed by use of the MUTE function .
05 Acoustic leak detection
The fibre optic cable with integrated sensor head for audio
recording is inserted in the defective pipe . The sound
recorder is very sensitive and records even barely percep-
tible sounds . Nevertheless, despite this sensitivity, it can-
not be excluded that a leak is not recognized under certain
conditions . This might either be due to the fact that the leak
causes no leakage noise or else the sensor head no longer
works correctly . Hence, prior to every insertion, check
whether the sensor head records the sounds correctly by
running you finger down the tip .
It is recommended to insert the fibre optic cable in steps of
approx . 30-50 cm . At the end of each step, the probe should
be allowed to come to a rest in order to record the sound in
the probe's environment .
5.1 Using the Bluetooth headphones
LD6000 PTS
In the case of leak detection using the LD6000 PTS in
connection with the Bluetooth headphones, the noisiest spot
in the defective pipe is the search target . We proceed on the
assumption that every leak brings about a leakage noise .
The closer you get to the fault location, the more sound
energy will be recorded by the sensor head, which in turn
results in a perceptible increase of the volume . At the same
time a shift in the pitch to higher frequencies will be audible .
Push the probe so far into the pipe until you have detected
the noisiest location . For fine tuning push and pull the probe
past the leak for a number of times .
5.2 Via integrated level indication
The integrated level indicator at the LD6000 PTS is merely
for orientation purposes . Please note that a leaking sound
does not necessarily cause a full-scale deflection of the
Level LED . On principle, though: the closer the sensor is
pushed to the point of leakage, the more noticeable will be
the deflection .
5.3 Using the Bluetooth receiver and LD6000 combina-
tion detector
LD6000 PTS
LD6000 PTS
When combined with the
LD6000 combination detector
the LD6000 PTS is the perfect visual addition for acoustic
leak detection . By use of the LD6000 combination detector
frequencies to 4000 Hz can be visualized . Optimum results
can be achieved in
"
smart mode
"
and here in the user-
defined application . Also recommendable are non-stop
measurements . For details regarding the settings please
