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MIET GONDIA Department of electronics & comm.HART Communication Guided by:- Prof. Shekhar Patle Submitted by:- Punam Tembhare

ContentsIntroductionWhat is HART?How HART Works?Features of HART technology .HART Communication ProtocolHART technology can help in: Two Communication Channels.Benefits of Using HART .ApplicationReferences

IntroductionHARTField Communications Protocol is widely recognized as the industry standard for digitally enhanced 4-20 mA smart instrument communication. Use of the technology is growing rapidly, and today virtually all major global instrumentation suppliers offer products with HART communication. The HART Communication Protocol (HART = Highway Addressable Remote Transducer) defines a bi-directional field communication protocol standard for instrument, control and automation systems. Actually, it's not just a standard, but the global standard for sending and receiving digital information across analog wires between smart devices and host systems. A host can be any software application from technician's hand-held device or laptop to a plant's process control, asset management, safety or other system using any control platform.

What is HART?HART (Highway Addressable Remote Transducer) is a communication protocol designed for industrial process measurement and control application.It is called a hybrid protocol because it combine digital and analog communicationThe digital signal does not affect the analog reading.

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How HART Works?HART is an acronym for Highway Addressable Remote Transducer. The HART Protocol makes use of the Bell 202 Frequency Shift Keying (FSK) standard to superimpose digital communication signals at a low level on top of the 4-20mA.The HART protocol communicates at 1200 bits per second without interrupting the 4-20 mA signal and allows a host application to get two or more physical updates per second from a smart field device.This is the diagram of frequency shift keying[FSK].

features of HART technology Compatibility with standard 4-20mA wiringSimultaneous transmission of digital dataSimplicity through intuitive menu-driven interfacesRisk reduction through a highly accurate and robust protocolEase of implementation for maximum up-front cost effectivenessBroad product selection, with compatible devices and software applications from most process automation providersPlatform independence for full interoperability in multi-vendor environments

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The HART (Highway Addressable Remote Transducer) protocol isa widely accepted standard for digitally enhanced communication with instrumentation within the process industriesDue to this we can convert our PC or mobile into HART communication.

The Benefits of HART Protocol Communication in Smart Instrumentation Systems

HART technology can help in:Leverage the capabilities of a full set of intelligent device data for operational improvements.Gain early warnings to variances in device, product or process performance.Speed the troubleshooting time between the identification and resolution of problems.Continuously validate the integrity of loops and control/automation system strategies.Increase asset productivity and system availability.

Two Communication Channels

Benefits of Using HART

APLICATIONSCost-Saving Applications.Inventory Management Applications.Open Architecture Applications.Safety integrity.

Open Architecture Applications

Inventory Management Applications

HART Protocol SpecificationsApplication LayerSOME PRACTICAL HART COMMANDSGbor Berenzai - MOL Refinery HungaryHART Plant of the Year Award Recipien

17REFERENCESwww.google.comwww.ask.comhttp://wiki.answers.comhttp://www.ehow.comhttps://www.google.co.in/searchwww.wikipedia.in

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