COMAC CAL FLOW 38 - Page 30

Manual FLOW 38 Page 30 (total 54) COMAC CAL s.r.o.
*Note
Period [ms] = pulse width [ms] + inter-pulse gap [ms] where gap ≥ width
The pulse width is selected in steps by scrolling through predefined values with or buttons.
Flow switch operation
In “flow switch” status output parameter setting, it is possible to change the logics (polarity) of the
electrical signal (on-state/off-state), furthermore, to set the output to which direction the output will respond
(flow in positive direction, in opposite direction and in both directions) as well as your own switching point
value.
*Qlimit - the number of decimal places is given by DN of the given meter and cannot be changed.
The status contact makes it possible to set the amount of hysteresis between Qon and Qoff states.
Meter status – error output
Output 2 compared to Output 1 can be set additionally as a failure status output of the meter. If no failure
status occurs in the meter, the status output is on-state.
1÷424 ms
(Impulse width)
+Q – in flow direction
ΣQ – in both flow directions
- Q – in reverse flow direction
*999.9 m
3
/h
99.99 m
3
/h
9.999 m
3
/h
POS (contact
maker):
NEG (contact
breaker):
0.1 ÷ 99.9 %