Endress+Hauser Cerabar PMC71B, Brief Operating Instructions

Page: 25 / 28

Cerabar PMC71B HART Commissioning
Hauser 25
Adjustment:
1. Enter the pressure value for the 4 mA current via the Lower range value output
parameter (50 mbar (0.75 psi)).
2. Enter the pressure value for the 20 mA current via the Upper range value output
parameter (450 mbar (6.75 psi))
Result: The measuring range is set to 4 to 20 mA.
8.5.3 Commissioning without the commissioning wizard
Example: Commissioning a volume measurement in the tank
Pressure and temperature units are converted automatically. Other units are not
converted.
In the following example, the volume in a tank should be measured in liters. The maximum
volume of 1 000 l (264 gal) corresponds to a pressure of 450 mbar (6.75 psi).
The minimum volume of 0 liters corresponds to a pressure of 50 mbar (0.75 psi).
Prerequisites:
• Measured variable in direct proportion to the pressure
• Due to the orientation of the device, there may be pressure shifts in the measured value
(when the vessel is empty or partly filled, the measured value is not zero)
Perform position adjustment if necessary
B
450 mbar
1000 l
A
50 mbar
0 l
V
[l]
1000
0
50
p
[mbar]
450
A0039010
A "Pressure value 1" parameter and "Scaled variable value 1" parameter
B "Pressure value 2" parameter and "Scaled variable value 2" parameter
The pressure present is displayed in the operating tool on the same settings page in the
"Pressure" field.