MIM-
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MIM 01/0419
10.6.3 Pulse
output
MIM flowmeter provides a scalable pulse output. When the pulse output is
activated, the cyclically incoming volume is available as a pulse train at the output.
The pulse width of the pulse output is constant and can be set in a range of 1 ms
up to 20 s. The pulse output is updated in a cycle of 100 ms. At the beginning of
each update, it is determined how much volume has been accumulated during the
previous update period. According to this amount and the set pulse volume, the
corresponding amount of pulses is available as a pulse train at the output.
The pulse signal is not suitable for determining the volume flow with an
external frequency measurement.
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:
