Fig. 12: Function Of Creeping Suppression Illustrated With 0.6 L/Min - MIB Flowmax 44i Operating Manual

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Flowmax 44i
Creeping suppression
The creeping suppression excludes flow measurements that result from
convection in a narrow band around zero, even with a closed valve. At the
factory, the creeping suppression is set at a standard value in relation to the
cross-section of the flowmeter. Changes to a smaller value of the parameter may
cause an offset drift what results in a faulty measurement.
There are higher tolerances below the standard default settings, see also section
5.2 measurement errors!
Creeping suppression works with a hysteresis of - 25%.

Fig. 12: Function of creeping suppression illustrated with 0.6 l/min

Example: Creeping suppression = 0.6 l/min
If the flow rate is lower than 0.45 l/min the pulse output/analog
output becomes inactive. If the flow rate exceeds 0.6 l/min a pulse is
output again and added to the totalizer. Similarly, a value is
transmitted to the analog output again.
Setting range: 0.0...20 l/min, in 0.006 l/min steps
Default settings: 0.3 l/min for DN10
0.9 l/min for DN15
3.5 l/min for DN20
5.0 l/min for DN25
M I B
3. Commissioning
17