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Why Should a Normally Closed Contact Be Used for the Stop Button in PLC Systems?

PLC /

In the design of Programmable Logic Controller (PLC) systems, safety and reliability are top priorities—especially when it comes to how stop functions are implemented. A common and critical recommendation in industrial control engineering is to use a normally closed (NC) contact for the stop button. But why is this the best practice? This article explores […]

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Should Toxic Gas Detectors Be Installed When Handling Acrylamide?

Instrumentation /

1. Introduction Acrylamide (chemical formula: C₃H₅NO) is a white, odorless crystalline solid commonly used in the production of polymers, adhesives, flocculants, and in laboratory research. Despite its low volatility under standard conditions, acrylamide is highly toxic, and prolonged exposure poses serious health risks, including neurotoxicity and potential carcinogenicity. This article explores whether workplaces that handle

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A Practical Guide to S-Type Load Cells: Applications and Selection Tips

Sensors /

Introduction S-type load cells are one of the most widely used force sensors in industrial measurement and automation systems. Known for their accuracy, versatility, and ability to measure both tension and compression, S-type sensors are found in everything from material testing machines to hopper weighing systems. This article will walk you through the working principle,

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How to Choose the Right Instrument for Your Equipment

Instrumentation /

Reliable instruments play a critical role in equipment management and industrial automation. They monitor and control essential parameters such as temperature, pressure, and flow, ensuring stable production processes, improved efficiency, and high product quality. This guide provides a detailed overview of how to select the most suitable instruments for your equipment by addressing key considerations.

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Can a 1-In 2-Out Signal Isolator Be Used in a Safety Instrumented System (SIS)?

PLC /

In industrial process control systems, signal isolators play an essential role in transmitting and conditioning analog signals. Among various configurations, the 1-in 2-out signal isolator (also known as a signal distributor) is commonly used to split one input signal into two independent outputs. However, when it comes to Safety Instrumented Systems (SIS), which are governed

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Are PF1 1/2″ and G1 1/2A Threads the Same?

Thread /

1. Introduction In industrial piping and instrumentation, thread compatibility is crucial for ensuring proper mechanical connection and sealing. Two commonly encountered thread types are PF and G threads. Users often ask: Are PF1 1/2″ and G1 1/2A threads identical?This article will clarify the technical relationship between PF and G threads, explain their minor differences, and

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Understanding the Evolution of HART Communication Protocols: A Comprehensive Overview

Hart /

HART (Highway Addressable Remote Transducer) is one of the most widely used communication protocols in industrial automation. It allows digital communication between field instruments and control or monitoring systems, while still supporting legacy 4-20mA analog signals. Over time, several versions of HART have been developed, each offering new features and enhancements to meet the evolving

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Automation Configuration Requirements for the Petrochemical Industry

Instrumentation /

Introduction As the petrochemical industry continues to grow in scale and complexity, the level of automation has become a critical factor in ensuring efficient, safe, and competitive operations. A well-designed automation system not only optimizes production processes but also enhances operational safety, facilitates decision-making, and lays the foundation for intelligent plant development. This document outlines

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Understanding the Differences Between DCS, SIS, GDS, CCS, PLC, PAS, and MMS

PLC /

1. Introduction Modern industrial plants rely on a wide array of automation and safety systems to ensure operational efficiency, product quality, and personnel and environmental safety. Among these, systems such as DCS, SIS, GDS, CCS, PLC, PAS, and MMS each play specific, critical roles.This article aims to clearly define each system, explain its purpose, highlight

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Ultrasonic Level Sensor Probe Cleaning Guide for Food Industry Applications

Level meter /

Maintaining the cleanliness and hygiene of ultrasonic level sensor probes is essential to ensure accurate measurement and prolong the device’s service life, especially in food production environments. This guide provides detailed, standardized procedures for cleaning, disinfecting, and maintaining food-grade ultrasonic level probes. 1. Preparations Before Cleaning 1.1 Power Disconnection Disconnect the power supply to the

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