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OPERATING MANUAL HPC & UMC4
14.4.1 Damping
The damping value is intended to dampen abrupt flow rate changes or disturbances. It affects the meas-
ured value display and the current and pulse outputs. It can be set in intervals of 1 second from 1 to 60
seconds. After choosing the
Damping value
function and pressing
„Enter“, the following selection field will
be displayed:
Damping
03 s
The current damping value will be displayed. According to the description in Section 13.4.3.2 Input win-
dow/modify a value, the current value can be changed. After setting the new damping value, press
„Enter“
to confirm your entry.
14.4.2 Low flow cut-off
The value for low flow cut-off (low flow volume) is a limiting value stated as a percentage that relates to
the upper-range value of the flow rate. If the volume drops below this value (e.g. leakage), the displayed
value and the current outputs will be set to “ZERO.” The value for low flow cut-off can be set from 0 to
20 % in 1-percent increments. After choosing the
Low flow cut-off
function and pressing
„Enter“, the fol-
lowing selection field will be displayed:
Low flow cut-off
00 %
The low flow volume will be displayed. According to the description in Section 13.4.3.2 Input win-
dow/modify a value, the current value can be changed. After setting the new low flow volume, you confirm
your entry with.
For devices used in custody transfer operations, you need to deactivate the low flow cut-off function, i.e.
to set this value to 0 %.
14.4.3 Low flow cut-off hysteresis
The hysteresis of the low flow volume is the flow rate expressed as a percentage of the upper range val-
ue by which the volume must fall below or surpass the set low flow volume in order to activate or deacti-
vate the function. The hysteresis of the low flow volume can be set in 1-percent increments from 0 to
10 %. After selecting the
Low flow cut-off hysteresis
function and pressing
„Enter“, the following selection
field will be displayed:
Low flow cut-off
Hysteresis 00 %
The current hysteresis will be displayed. According to the description in Section 13.4.3.2 Input win-
dow/modify a value, the current value can be changed. After setting the new hysteresis value, you con-
firm your entry with
„Enter“.
