Abstract:

A method of superheated steam flow calibration suitable for PLC program algorithm is proposed in this paper.Its principle is to make a fitting for the superheated steam density table by polynomial surface fitting algorithm and to convert it into a fitting formula based on PLC programming so as to obtain a more precise fitting.The test result shows that this method has higher precision,wider range of application,and much simpler in expression,suitable for PLC programming compared with the conventional empirical method.It has been adopted for several projects with satisfactory results.