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A - 6
Operating manual for LD6000 PTS
read the user manual of the LD6000 combination detector .
Fundamentally, here, too: the closer you get to the fault
location, the bigger the sound level (numeric indication
in the LD6000 combination detector) . At the same time a
shift in the pitch to higher frequencies will be visible (lower
frequency-response diagram in the LD6000 combination
detector) .
06 Pipe and pinpoint location
Described below are 2 methods to determine the position of
the probe head . For one thing by using a common locating
device (not included in the scope of delivery) and for
another by means of a perambulator .
Method 1 – locating device
A common locating device is required for pipe and pinpoint
location (not included in the scope of delivery) . Typically
such a locating device consists of transmitter and receiver .
Read the operating manual of your locating device for
proper usage .
After successful acoustic leak detection leave the fibre
optic cable at that position in the defective pipe where you
detected the maximum level . Then connect the frequency
generator of your locating device to the LD6000 PTS .
Generally true for all frequency generators of
locating devices:
Probe detection
When one connector is connected to the generator
and the other to a ground spike stuck into the earth,
the course of the inserted fibre optic cable can be
traced .
Locating pinpoints
When both connectors (signal and ground) respectively
are connected to the generator, only the search pig at the tip
of the probe will be contacted . Thus an exact position for the
pig can be determined .
The locating function was optimized for the use with 33 kHz,
other common frequencies can only be used to a limited extent or
not at all .
33 kHz
33 kHz
Method 2 – perambulator
After successful acoustic leak detection also leave the fibre
optic cable at that position in the defective pipe where you
detected the maximum level . Now read the developed
uncoiling length from the mechanical metre counter .
Memorize the value and then walk down the corresponding
length with a perambulator . The position, where the values
of perambulator and mechanical metre counter coincide,
corresponds to the location of the probe head inside the
pipe .
2 m
