Industrial Automation Communication Protocols
How do instruments and controllers communicate in a process control? Has it ever came in your mind how instruments and
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Basics of Two, Three & Four Wire Transmitters
All devices in a 4-20 mA current loop need to be supplied power from somewhere in order to function. Two-wire
Field Transmitter Communication Troubleshooting
When intelligent devices are not communicating or show abnormal status for any reason the DD file often get blamed first.
NAMUR NE107 Standard
Process variables and manipulated variables are the most important pieces of information from the devices. NAMUR has identified that the status
Importance of Fire & Gas Detection System
Industrial processes increasingly involve the use and the manufacture of highly dangerous substances, particularly toxic and combustible gases. Inevitably, inadvertent
How to identify location of Fire Detectors
Fire detectors are designed to respond at an early stage to one more of the four major characteristics of combustion,
HART Communication Tutorial Part 1
HART, an acronym for Highway Addressable Remote Transducer, is an open process control network protocol and was introduced in the
Derivative Controller Principle
RATE OR DERIVATIVE ACTION Consider a control system subjected to a disturbance, which causes the error to increase in a ramped
Top Electrical Engineering Interview Questions for Freshers
1. What is electric traction? Electric traction means using the electric power for traction system (i.e. for railways,trams, trolleys etc).
Light Emitting Diode Operation
The symbol for an LED is shown in Figure. The basic operation of the light-emitting diode (LED) is as follows.