User's Manual

Programming the logger
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6.2.1 Selecting the type of sensor
The physical value measured by the sensor is transformed into an electrical signal (e.g.
voltage, pulses, frequency) which is used to transmit the data to the logger. In order to
transform this carrier signal back into the original physical values, the logger needs to
know how the ranges are correlated to each other.
Select the sensor connected to the channel from the drop-down list on the upper left of
the window. If your sensor type is not contained in the drop-down list, select the
User-defined entry.
The sensors contained in the list are parameterized. The signal conversion data are
already populated and cannot be edited. Usually, no further configuration is required.
In some cases you have the chance to specify the unit for the recorded values -
e.g. ‘m3/h‘ or ‘l/sec‘.
Furthermore, with some flow sensors you have the chance to compare your results to
the values of a water meter. For this purpose, enter the water meters’ meter reading into
the displayed field prior to the measurement. The logger will then accept this count as a
starting point for the measurement.
6.2.1.1 Configuring an Internal Pressure Sensor
Most parameters of the internal pressure sensor are filled in automatically and cannot
be edited.
You have the chance to select the unit for the recorded pressure. Use the drop-down
list.
If you want sudden pressure fluctuations, known as pressure surges, to be recorded in
addition to the standard pressure measurement, select the Record Press Shocks
checkbox
Using the input field to the right of the checkbox, you specify how much a measuring
value has to differ from the previous value in order to classify a pressure fluctuation as a
‘pressure surge’.
Example: If ‘0.5’ is set, pressure surge recordings start as soon as a measuring value
is min. 0.5 bar higher or lower than the preceding value.
By means of the High resolution checkbox you can specify which sampling interval
should be used for the 60 second pressure surge recordings:
• checkbox de-selected: 1 sec sampling interval
• checkbox selected: 0.1 sec sampling interval
Using the short 0.1 sec interval allows a more detailed recording.
Please note that the high resolution recording of pressure surges requires more
energy and, thus, has a strong negative impact on the logger’s battery life.
The recording of pressure surges is parallel to the standard pressure measurement and
has no effect on this.
Introduction
Procedure
Unit
Recording
pressure surges