Search Results for: 4-20 mA

HART ( Highway Addressable Remote Transducer) Communication Protocol

What is HART protocol? HART (Highway Addressable Remote Transducer) Protocol is the global standard for sending and receiving digital information across analog wires between smart devices and control or monitoring system. HART is owned by independent non-profit  HART communication foundation. HART is now a global standard because digital information from HART devices can simultaneously communicated with the …

HART ( Highway Addressable Remote Transducer) Communication Protocol Read More »

Distributed Control System (DCS) basics

 Concept of Distributed Control System: DCS refers to a control system usually of a manufacturing system, process or any kind of dynamic system. In DCS controllers are not central in location, but which are distributed throughout the system with each component sub-system controlled by one or more controllers. The entire system is connected by a communication network …

Distributed Control System (DCS) basics Read More »

DIFFERENCE BETWEEN CALIBRATION OF A HART & CONVENTIONAL INSTRUMENT

INTRODUCTION There are smart and conventional instruments and the calibration procedure of these types of instruments are entirely different in this session we are going to discuss about the difference between calibration of a HART &conventional instrument CALIBRATING A CONVENTIONAL INSTRUMENT For a conventional 4-20 mA instrument, a multiple point test that stimulates the input and …

DIFFERENCE BETWEEN CALIBRATION OF A HART & CONVENTIONAL INSTRUMENT Read More »

Instruments Used In Control Loop

Instruments  I hope you have a general understanding what a feedback control loop is, if not please refer the following article – Feedback Control Loop  Sensors You have read  that a sensor monitors and measures what is happening in the process. Examples of sensors include: thermocouples, floats, limit switches, pressure switches, pressure switches, moisture meters, and …

Instruments Used In Control Loop Read More »

Scroll to Top