A Simple Microcontroller-Based 4-20 mA Current Loop Receiver for Sensors with Current Transmitters

https://doi.org/10.5614/joki.2010.2.1.2

Penulis

  • Arif Surachman
  • A. Suhendi
  • Maman Budiman
  • Mikrajuddin Abdullah
  • Khairurrijal Khairurrijal

Abstrak

A current loop receiver system based on a microcontroller has been developed. The current loop receiver system can serve 8 gas sensors with 4-20 mA outputs, which are handled by employing a multiplexer. The data acquisition of the system is composed of a common operational amplifier-based current loop receiver, a CD4051 multiplexer, an ADS7822 serial analog to digital converter (ADC), and an AT89S52 microcontroller. The measured gas concentration is displayed on the 7-segments or transmitted to a personal computer via the RS232 serial communication to be processed by the Microsoft Excel. Additional functions such as gas concentration level warning and error code display are also provided.

 

Keywords:4-20 mA, Current loop, Microcontroller, Receiver, Transmitter

Diterbitkan

2011-01-18

Cara Mengutip

[1]
A. Surachman, A. Suhendi, M. Budiman, M. Abdullah, dan K. Khairurrijal, “A Simple Microcontroller-Based 4-20 mA Current Loop Receiver for Sensors with Current Transmitters”, JOKI, vol. 2, no. 1, hlm. 15, Jan 2011.

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