10 DeviceZoneType 
10.12 PressureDifference
Description: Setting and/or monitoring of the pressure difference between main and return line
Unit: bar or lbf/in² (=psi)
Example: 2.8
Online versions of OPC UA specifications and information models.
Description: Setting and/or monitoring of the pressure difference between main and return line
Unit: bar or lbf/in² (=psi)
Example: 2.8