Cerabar M HART Commissioning
Endress+Hauser 33
6.3.7 Position adjustment - only display (bias pressure)
If the display does not show zero after calibrating the zero point at zero operating pressure (position-
dependent), the display value can be corrected to zero by entering or adopting a bias pressure
(position adjustment).
6.3.8 4 mA threshold (current output min. 4 mA)
The signal current in interference-free operation is set to 3.8 to 20.5 mA as standard. Selecting the
4 mA threshold guarantees that a minimum signal current of 4 mA is not undershot.
6.3.9 Safety alarm
To signal an error, an error code is transmitted with the measured value. Safety alarm: The bar graph
on the onsite display also assumes the value you have selected. The following values can be selected:
• MIN: 3.6 mA
• MAX: 22 mA
• CONTINUE: continue measuring
Main group: Basic calibration
#Matrix (VH
position)
Path through the
menus
Entry
P01-PMx4xxxx-19-xx-xx-xx-031
1 Set display to zero by entering a known bias pressure
(position-dependent pressure).
V0H5 ➤ Set bias pressure e.g. 5 psi
Enter
Alternatively
2 Set display to zero. A bias pressure present (position-
dependent pressure) is accepted as zero pressure.
V0H6 ➤ Confirm
bias pressure
automatically
Enter
Main group: Sensor data
# Matrix (VH position) Path through the menus Entry
1 Select pressure unit
V7H3 ➤ Off current output
min. 4 mA
e.g. On
Enter
Main group: Basic calibration
#Matrix
(VH position)
Path through the
menus
Entry
P01-PMx4xxxx-19-xx-xx-xx-035
Fig. 35: ➀ continue measurement
1 Select safety alarm
V0H8 ➤ Select safety e.g. MAX.
Enter
p
p
Bias
p+p
Bias
p
e
=0
t
I
➀
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