Measuring Volume; General Principle; Finding The Correct Trigger Values - IMT Analytics FlowMeter F1 User Manual

7

Measuring volume

7.1

General principle

7.2 Finding the correct trigger
values
IMT Analytics AG
The FlowMeter measures volumes by integrating the flow between the start and stop
trigger events. Flow, Absolute Pressure (in Flow) and Differential Pressure can be
used as trigger source.
If you set a trigger for the first time, it is important to know the characteristic of the
signal that will be used for the trigger (flow or pressure). It is therefore advisable to
analyze that characteristic by using the chart view on the device or record the data
to a USB flash drive first. By analyzing the graph afterwards, the appropriate trigger
settings can be determined.
The following example shows a flow curve with a potential problem:
The first two circles indicate the triggers that should be used to measure the volume
of this event. However, after the event a small false signal is visible that can be caused
for example by switching of valves. In this case a pressure trigger should be used.
Measuring volume
7
39