2 SeCorr system
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5
2
SeCorr system
2.1
General information about the system
The
SeCorr
system works using the correlation method, whereby
measurements are taken at two fittings (e.g. slide gate, hydrant)
at the same time. Highly sensitive microphones record the nois-
es at the fittings. The two microphones are each connected to a
radio transmitter. The radio transmitters transmit the signals to a
receiver – the correlator. The correlator determines the run time
difference between the signals, i.e. the time lag between the nois
-
es reaching the two measuring points. This is then used, together
with the pipe data, by the correlator to calculate the leak position.
The advantage of the correlation method is that the leak position
is determined independently of the hearing and experience of
the user.
The system features a function which can also locate leaks
acoustically if there is no suitable technology available specif-
ically for pinpointing or prelocation.
2.2
System components
2.2.1
Overview
SeCorr
is a modular system. The main system components are
as follows:
●
C 200
receiver (correlator)
●
2
RT 200
transmitters (1 pair)
− Transmitter 1 with blue flag
− Transmitter 2 with orange flag
●
2 microphones, e.g.:
−
UM 200
universal microphone
OR
−
HY 200
hydrophone
One microphone is required for each
RT 200
transmitter. The
same type of microphone must always be used for the two
transmitters.
