About ABB pressure transmitter settings
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The system uses Zhejiang University Central Control, and the conditions: 0——227KPA high level alarm 126KPA high level alarm 128KPA. It mainly measures vacuum pressure. The pressure transmitter is ABB's upper limit of 250KAP and lower limit of -100KPA. How to set the range and zero point {When I took over this job, HART displayed zero point - 99KPA, range 250KPA, DCS displayed 0).
The upper limit is 250KAP and the lower limit is 100KPA. The range is 350. Boss, the zero point is not easy to mark. It is best to use the FLUCK hand pump to set 2 standard points and set the DCS range setting to see if there is any problem.
What is the measuring range of your DCS configuration and the measuring range that you need?
If you know that you can set it directly with the communicator (the same as the DCS configuration), there will generally not be much error. You can check it if necessary.
First determine the following DCS range and use the communicator to determine the zero point. (For example, -101 is the zero point to display 4AM current, and then the range is 227KPA) Then you can set the zero point to be -101KPA. The range is 227 minus 101 equals 126, and 126 is the upper limit, which is 20MA output.