Proline Prosonic Flow 91
Description of device functions
Hauser
87
10.9
Group PULSE/STATUS OUTPUT
Functional description PULSE/STATUS OUTPUT
OPERATION MODE
Configuration of the output as a pulse or status output. The functions available in this
function group vary, depending on which option you select here.
Options
:
OFF
PULSE
STATUS
Factory setting
:
PULSE
PULSE VALUE
!
Note!
This function is not available unless the PULSE setting was selected in the OPERATING
MODE function.
Use this function to define the flow at which a pulse is triggered. These pulses can be
totaled by an external totalizer and the total flow since measuring started can be recorded
in this way.
In the SYMMETRY measuring mode
106, the value assigned applies to both flow
directions; in the STANDARD measuring mode it applies only to the positive flow
direction.
User input
:
5-digit floating-point number, [unit]
Factory setting
:
Depends on nominal diameter and country, [value] [dm
3
to m
3
or US-gal] / pulse;
Corresponds to the factory setting for the pulse value
!
Note!
The appropriate unit is taken from the SYSTEM UNITS group.
PULSE WIDTH
!
Note!
This function is not available unless the PULSE setting was selected in the OPERATING
MODE function.
Use this function to enter the maximum pulse width of the output pulses.
User input:
5 to 2000 ms
Factory setting:
100 ms
Pulse output is always with the pulse width (B) entered in this function. The pauses (P)
between the individual pulses are automatically configured. However, they must at least
correspond to the pulse width (B = P).
a0001233-en
P= Intervals between the individual pulses
B = Pulse width entered (the illustration applies to positive pulses)
"
Caution!
Buffering (pulse memory) takes place if the number of pulses is too large to output the
pulses with the selected pulse width (see PULSE VALUE function on
87). The
system error message RANGE PULSE is displayed if more pulses are in the pulse memory
than can be output in 4 seconds.
!
Note!
• When entering the pulse width, select a value that can still be processed by an external
totalizer (e.g. mechanical totalizer, PLC, etc.).
• The pulse output's response to faults is defined in the central FAILSAFE MODE function
B= P
B
P
P
B
B< P
t
t
transistor
transistor
conducting
nonconducting
conducting
nonconducting
