Endress+Hauser Proline Promag 55 - Page 83

Device functions Proline Promag 55 FOUNDATION Fieldbus 3 Transducer Block
Endress+Hauser 83
Low Flow Cut Off -
Assign
AUTO - OOS Use this parameter to assign the switch point for the low flow cut off.
Options:
OFF
VOLUME FLOW
MASS FLOW
Factory setting:
VOLUME FLOW
Low Flow Cut Off -
On Value
AUTO - OOS Use this function to specify the switch-on point for low flow cut off. Low
flow cut off is active if the value entered is not equal to 0.
User input:
5-digit floating-point number [unit]
Factory setting:
Nominal diameter and country dependent → Page 123 ff.
! Note!
• When the low flow cut off is triggered, a flow value of "0" is output via
the output value OUT (AI Block). In addition, the status changes to
UNCERTAIN.
• Choice of unit: see "Low Flow Cut Off - Unit" parameter
( → Page 83).
Low Flow Cut Off -
Unit
read only Use this parameter to view the unit for the low flow cut off.
! Note!
The unit for low flow cut off is determined by means of the "System Unit -
Volume Flow" or "System Unit - Mass Flow" parameter ( → Page 79 ff.).
Low Flow Cut Off -
Off Value
AUTO - OOS Use this function to enter the switch-off (b) point for low flow cut off.
Enter the switch-off point as a positive hysteresis (H) from the switch-on
point (a).
User input:
Integer 0 to 100%
Factory setting:
50%
A0003882
m = switch-on point, n = switch-off point
a Low flow cut off is switched on
b Low flow cut off is switched off (a + a
⋅ H)
H Hysteresis value: 0 to 100%
■ Low flow cut off active
QFlow
"Flow" Transducer Block/base index 1400
Parameter
Write access with
operating mode
(MODE_BLK)
Description
t
H
Q
m
n
b
a