shkoko2000
Member
Dear all,
I have point pressure transmitter PT. When i accessed on hart i found the value is 140 psi but on plc (controllogix) is 114 psi. The ranges on transmitter and plc is 0 to 800 psi.when i isolate the transmitter from service and inject pressure by hand pump all values on hart and at ma is right with no deviation. When i put it in service but isolated it reads at hart 0 psi but at plc reads -60 psi. I inject plc channel found it passes the test without any deviation. At the end, i replace the transmitter, everything is ok and all readings are the same.I want to know what is happened to the transmitter? I mean can anyone show me what is the root cause of this problem...
I have point pressure transmitter PT. When i accessed on hart i found the value is 140 psi but on plc (controllogix) is 114 psi. The ranges on transmitter and plc is 0 to 800 psi.when i isolate the transmitter from service and inject pressure by hand pump all values on hart and at ma is right with no deviation. When i put it in service but isolated it reads at hart 0 psi but at plc reads -60 psi. I inject plc channel found it passes the test without any deviation. At the end, i replace the transmitter, everything is ok and all readings are the same.I want to know what is happened to the transmitter? I mean can anyone show me what is the root cause of this problem...