To the problem about monitoring electrical parameters in the electric power system,a fast and effective monitoring method,which is used for electrical parameters in the intelligent transfer techique,is studied in this paper.

range adjustment of intelligent transducer and its PID control function starting in single loop water-level stage auto control system.

Based on the analysis of reasons for measuring error in traction load with conventional transducers, this paper proposed the principle of intelligent transducer for traction substation and discussed its hardware and software configuration and realization in detail.

Design of intelligent transmitter with digital retrieval water-level sensor;

Tiny Deferential Pressure Intelligent Transmitter Based on HART Protocol;

The application current situation of intelligent transmitter based on fieldbus in thermal power plant;

Aimed at solving the defects existing in the analog transmitter instruments controlling procedure of pulp concentration low precision and stability,high power consumption and expensive maintenance cost,an intelligence transmitter with CAN bus communication function for pulp consistency control was described.

Design of New Multi-parameter Smart Transmitter;

It chose the digital to analog converter AD421 to design the smart transmitter which included 4~20 mA two-wire current output.

The priniciple of high precision digital to analog converter AD421 and its application in the design of the smart transmitter were introduced in the article.

This paper used MSP430 to design a smart transducer interface module(STIM) based on the standard of IEEE1451.