ABB FSM4000 - Page 66

66 FSM4000 ELECTROMAGNETIC FLOWMETER | OI/FSM4000-EN REV. E
… 8 Operation
… Parameter descriptions
Submenu / parameter Value range Remark
Qmax DN
View only
Display the max. possible flow range. Automatically selected
based on size.
50 m
3
/h
Qmax Numerical entry Flow range end value for forward and reverse flow. Flow range
end value configurable from 0.5 ... 10 m/s.
50 m
3
/h
Damping 1
τ
Numerical entry
Response time, after 1τ the value displayed has reached 63% of
its end value (after 5τ). The following values can be selected,
operating mode: Standard 0.2 ... 20 s, Quick/piston pump
0.07 ... 20 s.
1 sec
Low flow Numeric entry 0 ... 10%
of Qmax
Applicable for display and all outputs. The switching limit for the
low flow cutoff has a built-in hysteresis of 0.1%.
1.0 %
Submenu
Note
The meter pipe must be completely filled to ensure proper
measurement. The function ‘Detector empty pipe’ can be used to
continuously monitor this condition. If the measuring medium
drops below the electrode level, all output signals can be
automatically set to zero. This ensures false pulses or incorrect
displays are avoided when the meter pipe is empty. In addition to
the message in the display, this condition can be reported via the
switch contact output. If the meter tube is filled, the error
message ‘empty pipe’ is turned off and the measuring system
returns to normal operation.
Detector e. pipe
Detector e. pipe Off
A
Turn on/off the ‘Detector empty pipe’ function. Not configurable
for sizes:
1 mm 1/25 in
1.5 mm 1/17 in
2 mm 1/12 in
3 mm 1/10 in
4 mm 5/32 in
6 mm 1/4 in
8 mm 5/16 in
Off
Note
The ‘empty pipe’ function is not available for flowmeter sensors
with preamplifiers. The menu is hidden.