Heinrichs Messtechnik GmbH
Page 58 of 118
OPERATING MANUAL TMU-W / UMC4
7.2.4.1
Damping
The damping value is intended to dampen abrupt flow rate changes or disturbances. It affects the
measured 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 and can be changed by toggling the arrow keys.
Pressing the “Enter” key confirms the entry.
7.2.4.2
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 following selection field will
be displayed:
Low flow cut-off
00 %
The low flow volume will be displayed and can be changed by toggling the arrow keys . After setting the new
low flow volume, you confirm your entry with “Enter“.
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 %.