3 Using the system
│
41
3.6.3.1
Artificial leak outside of the measuring section
In the ideal case, it is possible to generate an artificial leak out
-
side of the measuring section.
1.
Generate an artificial leak (e.g. open hydrant) outside of the
measuring section.
Open the
Filter
menu on the device.
2. Tap the correlation curve. The
Correlation
menu appears.
3. Tap the
Sound velocity
button. The
Sound velocity
menu
will appear.
4.
Specify whether the artificial leak is outside transmitter 1 or
outside transmitter 2. Tap the corresponding button.
5. Tap the
Start measurement
button. The measurement will
start. The
Stop measurement
button will appear.
6. Stop the measurement when the current value for the meas-
ured sound velocity has stabilised.
7. Apply the measured sound velocity by pressing
Confirm
.
The sound velocity measurement is complete. The receiv-
er will switch back to the
Correlation
menu. The measured
sound velocity is applied to the current measurement.
3.6.3.2
Artificial leak within the measuring section
In certain cases it is not possible to generate an artificial leak
outside of the measuring section. The sound velocity can also be
measured using an artificial leak within the measuring section.
1. Open the
Sound velocity
menu.
2. Tap the
Between the transmitters
button. The dialog
Dis-
tance (from 1) [m]
appears.
3.
Enter the distance of the artificial leak from transmitter 1.
4.
Confirm the entry. The receiver will switch back to the
Sound
velocity
menu.
5. Tap the
Start measurement
button. The measurement will
start. The
Stop measurement
button will appear.
