P_DFI_0018_SW
Q, f
f
max
0
1
t
Error
t
Fig. 18: Truncated area for f with too high a flow Q for ‘Pulse width’ - ‘constant’
‑
equates to the flow value measured
- - equates to the flow value emitted
The DulcoFlow
®
emits an error message in the event that the limit specified here is exceeded and
the status LED (left) lights up orange.
A setting can be entered in the
‘error output’ menu to determine whether the DulcoFlow
®
outputs an
error signal via the counter output to an external unit.
Stroke feedback
The cable must be fed from the counter output
to the “metering monitor” terminal of the
metering pump for stroke feedback, for
example to a Prominent metering pump - as
with a metering monitor Flow Control
®
.
Then the
‘stroke feedback’ must be calibrated
under
‘calibration’ , see “Calibration” chapter.
Simulation
Go to the
‘simulation’ menu and set the
required frequency under the
‘simulation’ menu item to simulate a fre‐
quency signal coming from the Dulco‐
Flow
®
for another unit.
ð
The DulcoFlow
®
generates this fre‐
quency while the
‘simulation’ menu
item is open.
Set up
37