HART

Installation & Troubleshooting of communication systems -part 1

Introduction  When solving problems in a communications system, the engineer or technician tries to use some standard format to arrive at a faster solution. Industrial communications systems do not always respond to proven approaches that worked with wired inputs and outputs. Common problems and solutions: Some of the causes of industrial communication problems include: • …

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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 …

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Types of Signal Transmission

Introduction The secondary electronics of a transmitter amplify and condition the weak electrical signals generated by the sensor, so that the signals can be sent over long distances without being degraded by noise, and thus the signals can be used to control devices such as indicators, recorders and controllers. Transmitters use various techniques to transmit …

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Basics of Hart Communicator

Introduction HART is a master-slave communication protocol  , which means that during normal operation, each  slave (field device) communication is initiated by a master  communication device. Two masters can connect to each HART loop. The primary master is generally a distributed control system (DCS), programmable logic controller (PLC), or a personal computer (PC). The secondary master can be a handheld terminal or another PC. Slave devices include transmitters, …

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