Endress+Hauser Proline Promag 300 - Page 78

Description of device parameters Proline Promag 300 Modbus RS485
78 Endress+Hauser
Additional information Description
Pressure shock suppression is enabled
• Prerequisite:
Flow rate < on-value of low flow cut off
• Output values
– Flow displayed: 0
– Totalizer: the totalizers are pegged at the last correct value
Pressure shock suppression is disabled
• Prerequisite: the time interval set in this function has elapsed.
• If the flow also exceeds the switch-off value for low flow cut off, the device starts
processing the current flow value again and displays it.
Example
When closing a valve, momentarily strong fluid movements may occur in the pipeline,
which are registered by the measuring system. These totalized flow values lead to a false
totalizer status, particularly during batching processes.
t
Q
2
3 41
A B
C
DD
5
6
A0012888
Q Flow
t Time
A Drip
B Pressure shock
C Pressure shock suppression active as specified by the time entered
D Pressure shock suppression inactive
1 Valve closes
2 Flow falls below the on-value of the low flow cut off: pressure shock suppression is activated
3 The time entered has elapsed: pressure shock suppression is deactivated
4 The actual flow value is now displayed and output
5 On value for low flow cut off
6 Off value for low flow cut off