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Why GDS Systems Are Not Allowed to Use Bus Architecture (Including RS-485 Networks)

Gas Detection Systems (GDS) are categorized as critical safety systems. Their primary functions—real-time gas concentration monitoring, alarm triggering, and emergency interlock—require extremely high reliability, fast response, and fail-safe communication. For this reason, international and domestic standards clearly state that GDS field detectors must NOT be connected using a shared bus network, including RS-485 multi-drop wiring.A […]

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Common Electrical Interface Thread Types in Instruments

When it comes to electrical interfaces in instrumentation, selecting the correct thread type is essential for ensuring reliable connections and sealing. This article explores the most common thread types, their characteristics, applications, and examples to provide a comprehensive understanding. 1. Metric Threads (M) Metric threads, also known as ISO metric threads, are standardized by the

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The Evolution of Industrial Automation: The Synergy Between PLC and Supervisory Control Systems

In the realm of industrial automation, the Programmable Logic Controller (PLC) has long been regarded as the “brain” of control systems. It excels in executing logical operations, sequential control, timing, counting, and arithmetic tasks. However, as industrial processes grow increasingly complex, a standalone PLC system often falls short of meeting modern manufacturing demands. Enter the

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How to Diagnose Temperature Sensor Failures with a Multimeter: Core Logic + Practical Procedures

Core Principle: Temperature-related faults in electrical or industrial systems can be quickly located using the inherent resistance–temperature characteristics of NTC/PTC thermistors and the mV output characteristics of thermocouples.By performing three diagnostic steps—static resistance check, dynamic heating/cooling test, and loop continuity/voltage measurement—more than 90% of temperature-related failures can be accurately identified. 1. Identify the Sensor Type

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Understanding RS-485 Communication and Cable Core Selection

RS-485 is one of the most widely used industrial communication standards. It provides a robust, long-distance and noise-resistant method for data exchange between field devices, PLCs, controllers and sensors. Due to its differential transmission and multi-drop capability, RS-485 is considered a reliable backbone for distributed industrial control systems. 1. What Is RS-485? RS-485 is a

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UPS Power Supply: Working Principle, Common Failures, and Troubleshooting Guide

Uninterruptible Power Supply (UPS) systems play a critical role in protecting electrical equipment from power disturbances. By integrating rectification, energy storage, inversion, and automatic transfer, a UPS ensures stable, uninterrupted power to sensitive loads such as servers, controllers, medical instruments, and industrial equipment. In essence, a UPS works as both a power conditioner and an

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Temperature Measurement in Industrial Processes: Principles, Devices, and Best Practices

Introduction Temperature is one of the most fundamental and widely measured parameters in industrial processes. Nearly 50% of all process control applications involve temperature monitoring, and accurate temperature measurement is essential for product quality, equipment safety, energy efficiency, and overall plant reliability. Because temperature cannot be sensed directly, it must be measured through the physical

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A Comprehensive Guide to Buoyancy-Type Level Instruments

Buoyancy-type level instruments remain widely used across chemical processing, petroleum storage, water treatment and general industrial applications. Their stable performance, structural simplicity, and ability to operate in challenging process conditions make them a reliable solution for continuous or point-level measurement. This article provides a structured overview of the most common buoyancy-type level devices, their operating

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The Importance of Independent UPS for SIS, DCS, and GDS in Industrial Systems

In industrial environments, critical systems such as Safety Instrumented Systems (SIS), Distributed Control Systems (DCS), and Gas Detection Systems (GDS) play a vital role in ensuring safety, reliability, and operational efficiency. A key aspect of maintaining the robustness of these systems is the provision of Uninterruptible Power Supply (UPS). Whether the UPS for these systems

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The Hidden Workhorse of Industrial Automation: Why Pneumatic Cylinders Matter

In modern automated production lines, many precise and repetitive mechanical actions rely on a component that rarely attracts attention: the pneumatic cylinder.From stamping presses and robotic arms to packaging systems and electronic assembly equipment, pneumatic cylinders silently convert compressed air into controlled motion, forming the muscle system of machinery. 1. What Is a Pneumatic Cylinder?

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