
EN
FFU
Operating instructions
5 Operation
8013863/10L9 /2018-08-01 © SICK AG • Fluid sensors • Germany • Subject to change without notice
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Creeping flow
The creeping suppression serves the purpose of excluding flows from the measurement that can
evolve through convection in a narrow frame around zero, even with a closed valve. At the factory, the
creeping suppression is set at a reasonable standard value in relation to the cross-section of the flow
meter. There are higher tolerances below the standard default settings. The creeping suppression
works with a hysteresis of ±25 %.
Function of the creeping flow illustrated with 0.6 l/min
Example: Creeping flow = 0,6 l/min
If the flow rate is lower than 0.45 l/min the pulse output/analog putput becomes inactive. If the flow
rate exceeds 0.75 l/min a pulse is output again and added to the quantity counter. 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
Diagnostic
The sub menu „Diagnostic“ shows the actual software/hardware version and many helpful values for
analysis. Knowing about the actual values or the state bits makes it easy to review the measurement
by the manufacturer.