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SITRANS FM100
The electrical output type of the pulse output is push-pull, therefore HIGH and
LOW are actively switched through at the output.
Behavior on OVERFLOW:
If the volumetric flow measurement is in the OVERFLOW range, the pulse output
is switched off and a constant HIGH level is applied to the output.
Generation of the output pulse train:
The pulse volume (pulse value volume per output pulse) can be set freely within
wide ranges. Together with the adjustable pulse width and the measuring range
of the device there is a limited range in which the pulse output is instantaneous.
This is the case if the following condition is met:
MRE−Measurement Range End [ L/min ] ∗pulse width [ms]
or
Pulse volume [ L ] ≥
If the condition is not met, there may be a time lag of the pulse output. This is
particularly undesirable if dosing tasks are to be performed with the pulse signal.
The following table shows the different combinations of pulse volume and pulse
width for the different measuring ranges, in which the above limiting condition is
fulfilled.
page 32
pulse volume [L]
MRE−Measurement Range End [L/min] ∗ pulse width [ms]
≤ 22500
22500
A5E48762204-AA
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