Fluid Components International CMB - Manual (Page 60)

13.4.1 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
↵, the following selection field will be
displayed:
Damping
03 s
The current damping value will be displayed. According to the description in Section 12.4.3.2 Input win-
dow/modify a value, the current value can be changed. After setting the new damping value, press
↵ to
confirm your entry.
13.4.2 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
↵, the following
selection field will be displayed:
Low flow cut-off
00 %
The low flow volume will be displayed. According to the description in Section 12.4.3.2 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 %.
13.4.3 Low flow cut-off hysteresis
The hysteresis of the low flow volume is the flow rate expressed as a percentage of the upper range
value by which the volume must fall below or surpass the set low flow volume in order to activate or deac-
tivate 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
↵, 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 12.4.3.2 Input win-
dow/modify a value, the current value can be changed. After setting the new hysteresis value, you con-
firm your entry with
↵.
Page 60 of 106
CMB & CT OPERATING MANUAL