华电技术 ›› 2013, Vol. 35 ›› Issue (12): 11-13.

• 研究与开发 • 上一篇    下一篇

4~20mA电流输出回路抗射频干扰研究

  

  1. (南京国电南自美卓控制系统有限公司,江苏南京〓210032)
  • 出版日期:2013-12-25

Study on antiRF interference measures for 4-20mA current output circuit

  1. (Nanjing SAC Metso Control System Company Limited,Nanjing 210032, China)
  • Published:2013-12-25

摘要: 摘要:针对工业控制领域常用的4~20mA电流输出回路所遭遇的射频干扰问题,经过试验测试,给出了提高4~20mA电流输出回路抗射频干扰的研究数据及解决方案,改进措施应用于分散控制系统,运行情况良好。

关键词: 关键词:工业控制, 射频, 抗干扰, 4~20mA电流输出回路, 精度, 仪表

Abstract: Abstract:The 4-20mA current output circuit is commonly used in industrial control field. Aiming at the radio frequency interference (RFI) on the 4-20mA current output circuit, by means of experiment and test, the studied data and solution for improving antiRFI ability of the 4-20mA current output circuit were given. The improvement measures were applied in distributed control system, and the system operates well.

Key words: Key words:industrial control, radio frequency (RF), antiinterference, 4-20mA current output circuit, accuracy, instrument