Dear all,I have line pressure transmitter with model no.:3051TG4A2B21KE8D4M5Q4Q8S5B4P1T1 when i connect hart communicator 375 to it for testing,we found that the hart disconnected when the hand pump injected 30 bar.what i can do in this case.Note:1-URV=85 bar and LRV=0bar.
2- i have 3 transmitters do the same thing.
3-I tried 3 hart devices.
4-the transmitter used for metering station that i take its values to flow computers flowboss 600.
5-at normal operation the transmitters are reading 56 bar without any problems
If I understand your post correctly, it appears that 3 different 3051 transmitters all drop the HART communication when you apply 30 bar of pressure or above. This type of behavior could suggest that you do not have enough power going to the transmitter. Please verify the voltage at the terminals of the transmitter and electrical resistance of the 4-20 mA loop fall within the range shown below.
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