Siemens SITRANS F US Operating Instructions Manual page 39

Signals with positive and negative logic can be generated (positive or negative pulses).
Figure explains setting options.
Pulse output
Pulses are converted in a volume/impulse or mass/impulse block. There are two parameters
to be set for the impulse output in the menu which are used in this block:
• Pulse rate, menu 4.2.3: For example this value determines how many cubic meters flowing
through it takes to make one impulse. By setting of this value it is possible to change the unit
(unit/impulses) to make setting of the pulse volume easier.
• Pulse width, menu 4.2.4: The impulse width can be set in the range from 0.1 to 2000 ms.
The maximum impulse width is computed according to the set flow upper value.
The maximum frequency for impulse output is 5 kHz.
Full scale frequency, menu 4.2.5
The output frequency is converted from volume in a volume/frequency block.
The frequency is fixedly assigned to the volume. The duty cycle rate is constant 50%.
The frequency for the flow upper value is given by the variable.
Digital output 2 relay,
The digital output 2 is configured and parameterized with this menu.
SFIDK.PS.029.E5.02 / SW 2.01.07
menu 4.3
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