TECHNICAL DESCRIPTION
ULTRAFLOW
®
54 DN150-250
5512-876 GB/04-2012/Rev. F1
47
9.4.2
Hold-function
When the Hold input is activated (high level applied to input), counting stops at the counted pulse figure.
When the Hold signal is removed (low level applied to input), counting restarts.
The counters can also be reset by pressing the right key on the front panel (Reset).
Hold input
Galvanically isolated
Input protection
Against reversed polarity
“Open input”
Count (see
Figure 30
)
Figure 30
9.4.3
Push-button functions
Figure 31
The left push-button shifts between readings/counts of the two flow sensor inputs. In the display, M1 and M2
respectively indicate the currently displayed flow sensor inputs/counters.
Figure 32
The right push-button resets both counters (M1 and M2).
9.4.4
Use of PULSE TESTER
The PULSE TESTER can be used as follows:
Standing start/stop of flow sensor using the integral pulse counters.
Standing start/stop of flow sensor using the pulse outputs for external test equipment.
Flying start/stop of flow sensor using the integral counters controlled by external equipment (Sample &
Hold).
Flying start/stop of flow sensor using the pulse outputs controlled by external equipment (Sample & Hold).