Performing measurements
51
5.4
Pipe locating
5.4.1
Introduction
This application is primarily used for acoustic pipe location and pipe path location.
During this process, a defined acoustic signal is transmitted to the pipe at an accessible
location, for example using the “RSP-3” device from SebaKMT. The HL 7000 records
this signal at the surface of the earth.
In addition, the application is always useful when noise measurements are to be made
at a number of measuring points and the maximum levels compared to one another.
To mark the loudest measuring points, suitable objects or marking spray should be
available.
5.4.2
Procedure
There are different ways to proceed with the pipe location.
two possible variants:
“10-point search”
“Free search”
Before the measurement, the user sets 10
evenly spaced measuring points along an
intended section. During pipe location, ten
individual
measurements
are
taken
successively at these points. At the end,
the results can be compared on the
screen and the loudest measuring point is
marked. The user performs another 10-
point search. Ideally, the sum of the
marked,
loudest
measuring
points
indicates the course of the pipe in
question.
The user does not define the individual
measuring points in advance, but always
selects the next measuring point freely
after starting pipe location.
Connect the desired microphone and switch on all participating devices.
In the status bar of the screen, a pictogram indicates which mode of operation is
currently set for the mute button:
Mute button works as a “switch”
Mute button works as a “push button”
If necessary, change the mode of operation in the system settings (see page 62).
Requirements
Introduction
Procedure
