Endress+Hauser Proline Prosonic Flow 93 Function Manual page 77

Device functions Proline Prosonic Flow 93
Endress+Hauser
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OUTPUTS PULSE/FREQUENCY OUTPUT (1...2)
MEASURING MODE
!
(4225)
This function is not available unless the PULSE setting was selected in the function
OPERATION MODE (4200).
Use this function to define the measuring mode for the pulse output.
Options:
STANDARD
Only positive flow components are totaled. Negative components are not taken into
account.
STANDARD REVERSE
Only negative flow components are totaled. Positive components are not taken into
account.
SYMMETRY
Positive and negative flow components are taken into account.
!
The direction of flow can be output via the relay output.
PULSATING FLOW
If flow is characterized by severe fluctuations as is the case, for example, with reciprocat-
ing pumps, the positive and negative flow components are totalled, with the signs taken
into account (e.g. –10 l and +25 l = 15 l).
Flow components outside the maximum pulse number per second (value/width) are
buffered, balanced and output after a maximum delay of 60 seconds. If the buffered data
cannot be processed within approx. 60 seconds, a fault/notice message appears.
Under certain plant conditions, flow values can aggregate in the buffer, for example
in the case of prolonged and unwanted fluid backflow. However, this buffer is reset in all
relevant programming adjustments which affect the pulse output.
Factory setting:
STANDARD
Functional description
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Note!
Note!
7 Block OUTPUTS
CONFIGURATION (PULSE)
77