3 Transducer Block Device Functions Proline Promass 83 FOUNDATION Fieldbus
120 Endress+Hauser
Process - Pressure
Shock Suppression
(continued)
AUTO - OOS Activation of the pressure shock suppression
Pressure shock suppression is activated after the flow falls below the
ON-VALUE for the low flow cut off (see point a in graphic).
While pressure shock suppression is active, the following conditions apply:
• Flow reading on display → 0
• Totalizer reading → the totalizers are pegged at the last correct value.
Deactivation of the pressure shock suppression
The pressure shock suppression is deactivated after the time interval, set in
this function, has passed (see point b in graphic).
! Note!
The actual flow value is displayed and output when the time interval for
pressure shock suppression has passed and the flow exceeds the OFF-
VALUE for the low flow cut off (see point c in graphic).
A0001285-EN
m = On-value (low flow cut off), n = Off-value (low flow cut off)
a Activated when the on-value for low flow cut off is undershot
b Deactivated once the time specified expires
c Flow values are taken into account again for calculating the pulses
■ Suppressed values
QFlow
User input:
Max. 4-digit number, incl. unit: 0.00 to 100.0 s
Factory setting:
0.00 s
"Flow" Transducer Block / base index 1400:
Parameter
Write access
with operating
mode
(MODE_BLK)
Description
n
m
a
b
c
inactive
active
inactive
t
Pressure shock suppression
Command:
Valve closes
Q
Given time
After filling
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