Isolated 4-20 mA Current-Loop System in the Experiment of Coal Pyrolysis in H-plasma Producing Acety

• 作 者: 沈洁 罗家融 陈龙威 孟月东 舒兴胜 方世东
• 机 构: Institute of Plasma Physics,Chinese Academy of Sciences,College of Science,Donghua University,
• 出 处: Journal of Donghua University(English Edition)
• 发表日期: 2009年05期
• 关键词: isolation transmitter amplifier receiver analog circuits conditioning limiting r

The purpose of this paper is to demonstrate a systematic approach to design high performance signal conditioning circuits,and to show how to implement the 4-20 mA analog current-loop transmitter and receiver circuits by using isolation amplifier.The basic principle and typical applicable circuits of the 4-20 mA current loop isolation chip T1100N,the current-limiting circuit and filter circuit are presented.And the experimental testing data of the circuits are analyzed.

The purpose of this paper is to demonstrate a systematic approach to design high performance signal conditioning circuits, and to show how to implement the 4-20 mA analog current-loop transmitter and receiver circuits by using isolation amplifier. Basic principles and typical applicable circuits of the 4-20 mA current loop isolation chip T1100N, the current-limiting circuit and filter circuit are presented. And the experimental testing data of the circuits are analyzed.