Endress+Hauser Ceraphant PTP31B - Page 28

Commissioning Ceraphant PTP31B, PTP33B
28 Endress+Hauser
Prerequisite:
This is a theoretical calibration, i.e. the pressure values for the lower and upper range are
known. It is not necessary to apply pressure.
Due to the orientation of the device, there may be pressure shifts in the measured
value, i.e. the measured value is not zero in a pressureless condition. For information
on how to perform position adjustment, see the "Position adjustment"→  29
section.
For a description of the parameters mentioned and possible error messages, see the
"Description of device parameters" section →  49 and .
Performing the calibration
1. Select a pressure engineering unit via the "UNI" parameter, here "BAR" for example.
Menu path: EF → UNI
2. Select the "STL" parameter. Menu path: STL. Enter the value (0 bar (0 psi)) and
confirm.
 This pressure value is assigned to the lower current value (4 mA).
3. Select the "STU" parameter. Menu path: STL. Enter the value (300 mbar (4.4 psi)) and
confirm.
 This pressure value is assigned to the upper current value (20 mA).
The measuring range is configured for 0 to 300 mbar (0 to 4.4 psi).