4-19
4.1.2.4 Signal coupling in non-metallic pipes
Signal coupling in non-
metallic pipes
With the aid of the
FlexSonde GOK50-R
the transmitter's signal can be transmitted
through non-metallic pipes, as shown in the picture below:
Alternatively, any other active probe (e.g. a camera probe) with adequate
transmitting frequency (see Technical Data) can be located using the receiver. For a
detailed description, please refer to the manual of the respective product.
Both the
FlexSonde GOK50-R
and an active probe are available as accessories for
the
Easyloc RxTx
location system (see section
When locating non-metallic pipes, the following guidelines should be observed:
•
Contrary to the line location, a probe location has to be performed in
perpendicular position to the probe, i.e., the handle of the receiver has to be hold
at right angle to the probe.
•
Practice locating the probe or
FlexSonde
head before pushing it into the drain or
duct.
•
Strongest signal will be detected when the receiver is above and perpendicular
to the probe (as shown in the picture).
Specifics of probe
location
The signal transmitted by the probe results in three signal maxima on the ground
surface level. Typically, there is a smaller maximum in front of the actual signal
maximum and one behind it.
For this reason, it should be always evaluated whether there are further signal
maxima in front of or behind the detected signal maximum. An accurate depth
determination can only be performed directly above the actual (highest) signal
maximum.
If the receiver is operated in automatic sensitivity level adjustment mode, these
lower signal maxima are usually masked-out.
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