Rainy and Thunderstorm Season: Why Do Instruments Frequently “Fail”?
September 15, 2025
Root Causes and Practical Protection Measures 1. Introduction In chemical and process industries, the reliable operation of field instruments is...
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Self-Locking, Interlocking, and Mutual Locking in Electrical Circuits
September 14, 2025
1. Introduction In industrial electrical control systems, the concepts of self-locking, interlocking, and mutual locking are fundamental. Although similar in...
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Key Considerations for Instrumentation Personnel During Plant Start-up and Shutdown
September 14, 2025
1. Introduction Plant start-up and shutdown are routine operations in chemical plants. While short-term shutdowns have limited impact on instrumentation,...
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Understanding the NAMUR NE43 Standard for 4-20mA Signals in Process Control
September 14, 2025
In industrial process automation, the 4-20mA signal is one of the most widely used standards for transmitting analog data from...
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Common Faults of Pressure Transmitters: Eight Categories and 24 Solutions
September 14, 2025
1. Introduction Brief role of pressure transmitters in industrial automation. Importance of fault diagnosis and preventive maintenance. 2. No Output...
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What Is an Instrument Ledger and Why It Matters
September 14, 2025
01. Why Establish an Instrument Ledger? 1.1 Clarify Asset Inventory A well-maintained instrument ledger helps answer three foundational questions: How...
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Seven Root Causes Behind 99% of Industrial Failures
September 14, 2025
Abstract In modern process industries, most equipment and system failures can be traced back to a limited set of underlying...
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What Is an Instrument Tag Number?
September 14, 2025
Abstract In modern industrial production, automation instruments are key tools for process monitoring, control, and safety assurance. To ensure accurate...
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Can a DCS Issue Open/Close Commands to an SIS System for SIF Control of Field Shutdown Valves?
September 13, 2025
In industrial automation and safety-critical systems, ensuring the integrity of Safety Instrumented Systems (SIS) is crucial. The role of SIS...
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How Deep Should a Thermometer Be Inserted for Accurate Measurement?
September 13, 2025
Abstract The immersion depth of industrial temperature sensors such as thermocouples, resistance temperature detectors (RTDs), and bimetallic thermometers directly affects...
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Normal vs. High-Temperature Radar Level Transmitters: How to Choose the Right One in One Minute
September 13, 2025
Abstract In radar level measurement, users are often confused between normal-temperature and high-temperature radar level transmitters. The key difference lies...
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Common ASTM/ASME Material Equivalency for Product Forms
September 13, 2025
In industrial projects such as boilers, pressure vessels, and chemical processing equipment, the same material grade may be specified in...
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Case Study: Signal Failure in Weighing Sensors Caused by Accidental Contact During Cleaning
September 13, 2025
Abstract This case study describes a packaging system failure in a polyacrylamide production line, triggered by an accidental disconnection of...
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Real-Time Optimization (RTO), Advanced Process Control (APC), and Self-Optimizing Control (SOC): Roles and Boundaries in Process Industries
September 13, 2025
Abstract Real-Time Optimization (RTO), Advanced Process Control (APC), and Self-Optimizing Control (SOC) are complementary approaches in hierarchical control structures. While...
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Understanding Water Hammer Effect and System Protection
September 12, 2025
Abstract Water hammer (hydraulic shock) is a common yet often underestimated phenomenon in both industrial and municipal fluid systems. It...
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Instrument Lifecycle Management: A Comprehensive Guide
September 12, 2025
Abstract Instrument lifecycle management is a systematic and digitalized approach that treats the entire process of an instrument—from design to...
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What Is Pipeline Purging?
September 12, 2025
1. Introduction Pipeline purging is a common industrial operation that plays a critical role in ensuring system reliability and safety....
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Preventive Maintenance Management System for Instrumentation (Reference Version)
September 12, 2025
1. General Provisions PurposeThis system is established to ensure the long-term, stable, safe, and efficient operation of instrumentation equipment. By...
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Power Supply and Maintenance Responsibilities for Electrical and Instrumentation Systems
September 12, 2025
1. Instrumentation Power Supply 1.1 Power Supply Provision Independent Power Setup: Critical instruments or instrumentation systems are equipped with dedicated...
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PID Parameter Tuning for Flotation Tank Level Control: A Case Study
September 12, 2025
Introduction In mineral processing plants, flotation tanks are large vessels where slurry and froth separation takes place. At first glance,...
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