One day we experienced a strange problem. Our temperature transmitter was not giving proper values. We connected it with our HART Communicator 375 but it too was not behaving normally. What it was doing that it was getting the device disconnected again and again. The device was actually a temperature transmitter connected with an RTD.
We brought HART Communicator 275 in and test the transmitter with it. It picked the device correctly. When we explored the settings, we came to know that the transmitter was configured as of THERMOCOUPLE type. We changed the configuration to RTD type we were using and the transmitter then started behaving properly. We then tested it with HART Communicator 375 and it picked that device correctly now.
We feel that it might be some issues with the backward compatibility of 375. What do you say?
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