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Difference between 2-wire, 3-wire, and 4-wire signal transmitter connections

4–20mA sensor transmitters are very common in industries to measure physical parameters such as pressure, temperature, flow, etc. Based on how they are connected to the process control and automation…

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Sinking and Sourcing Concepts and their differences

Sourcing and sinking are the core terms of PLC wiring and can greatly affect the reliability and functionality of your control system. In this article, we will explore these fundamental…

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The Concepts of a 4-20mA current Loop

4-20mA Current loops are widely used to transmit process variable data such as temperature, pressure, flow rate, level, consistency, speed, etc between the process controllers and the field devices. Transmitters…

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Interview questions on Modbus

Below is the list of the most important interview questions on Modbus: 1. What is Modbus and how does it work? Modbus is an application layer-level communication protocol that defines…

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Top 10 DCS Companies in the world

Distributed Control Systems (DCS) is being used to control a production plant or a process for over 40 years now. They were commercialized with the launch of TDC 2000 by…

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Top 10 Industrial Automation companies in the world

Industrial automation and robotics enable large-scale manufacturing at a lower cost. It enables an increase in productivity and product quality. There are many industrial automation service providers around the globe.…

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Interview questions on PLC (Programmable Logic Controllers)

Here are the most frequently asked Interview questions on PLC. This article aims to cover most of the interview questions on programmable logic controllers so as to prepare you to…

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Difference between PLC and DCS

In the world of industrial automation, Programmable logic controllers (PLC) and Distributed Control Systems (DCS) are used to control or automate a process or a machine. They monitor the field…

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Difference between NPN and PNP transistors | NPN vs PNP Transistor

The bipolar junction transistors exist as NPN and PNP types. This article intents to help you understand the difference between these two types and how to use them in a…

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Types of Proximity sensors and their applications

Proximity sensors are used to detect the presence of an object without any direct contact. It is used as an alternative to the limit switches. There are various types of…

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