Chapter 6 Parametrization
Operating manual HE 5422 MR
21
Version 1.2
Δp-Measuring range [mbar]
Is used to convert the current
differential pressure into the
4…20mA output signal.
0 mbar = 4 mA
Final value of measuring
range = 20 mA
5.0 – 450 mbar
35.0 mbar, 90 mbar, 450 mbar
(according the type plate)
High alarm [mbar]
Threshold for the high-alert
message.
The relay contact is closed, if
the value is exceeded.
OFF, 0 – 450 mbar
30.0 mbar
Upper threshold [mbar]
The
Δ
p dependent cleaning
starts, if the value is
exceeded.
Start of the
Δ
p cycle.
0 – 450 mbar
15.0 mbar
Lower threshold [mbar]
The
Δ
p dependent cleaning
stops, if this value is fallen
below of.
End of the
Δ
p cycle.
OFF, 0.1 – 450 mbar
10.0 mbar
Low alarm [mbar]
Threshold for the low alarm
message.
When this value is fallen
below of, the relay contact is
closed, if the post cleaning
threshold is not fallen below
of within the time frame of the
low alarm" delay.
OFF, -5.0 – 450 mbar
OFF
Post cleaning threshold [mbar]
The threshold is activated
when the lower threshold is
exceeded.
If the threshold is activated
and the pressure falls below
the threshold, then the post
cleaning cycle is triggered
and the cleaning relay for the
parametrized post cleaning
time is closed.
OFF, 0 – 450 mbar
2.0 mbar
Δp-Offset [mbar]
The offset is added to the cur-
rently measured differential pres-
sure.
-50 – 50.0 mbar
0 mbar
Password
Protection against unauthorized
parameter changes.
0 – 999
0
Main parameter
Setting area
Factory setting
