User's Manual Part 2

Additional measuring functions
58
7 Additional measuring functions
7.1 Real time measurement
The “Real time measurement” function allows you to follow, in real time, the current
noise level and the frequency in a pipe directly on location and without additional
measuring devices. A logger measures continuously and immediately transfers the data
to the Commander.
The real time measurement can be useful in many situations. Here are some examples:
• Before a measurement session, you can use the real time measurement to gain a
first impression of the noises in the section of pipe concerned. This enables you, for
example, to estimate a sensible leak threshold for the measurement.
• With real time measurements at various points on the pipe network, you can already
distinguish during the day the non-critical pipe sections from the potentially critical
ones. They can then be examined more closely using a night measurement.
If the pipe noise in a section is already very low during the day, the probability of a
leak is not very high. A night measurement may then no longer be necessary at this
position and the logger can be used at a more critical point in the pipe network.
• When “patrolling”, you can use a real time measurement to check the results there
and then from the loggers indicating a high leak probability.
The logger used for the real time measurement must be switched on and ready for
wireless operation. You can install a logger in configuration mode (see page 14) at a
position on the pipe or use a logger already installed for the function. The logger does
not have to be programmed for the function!
In Easy mode, proceed as follows to perform the real time measurement:
Step Description
1
In the main menu, select the Real time measurement button.
Result: The loggers in the workgroup are listed in the next view.
2
Select the list and there select the logger that you wish to observe.
Result: Observation of the logger begins. The view for the real time
measurement appears on the screen (see further down in the text).
In Professional mode, proceed as follows to perform the real time measurement:
Step Description
1
Select the symbol in the main menu.
2 In the next menu, select the Real time measurement button.
Result: The loggers in the workgroup are listed in the next view.
3
If necessary, you can call up another group using the drop-down list at the very
top of the screen.
4
Select the list and there select the logger that you wish to observe.
Result: Observation of the logger begins. The view for the real time
measurement appears on the screen (see further down in the text).
Introduction
Purpose
Requirements
Procedure in
Easy mode
Procedure in
Professional mode