Self-Optimizing Control (SOC): Rethinking Process Optimization in Chemical Systems
September 15, 2025
In large-scale chemical control systems, a typical structure involves a hierarchical separation of control and optimization layers based on time...
Read More
Can Four-Wire Instruments Be Designed as Intrinsically Safe?
September 15, 2025
Abstract In hazardous-area automation projects, the choice of explosion-proof type is a fundamental engineering decision. While two-wire transmitters are commonly...
Read More
Why Steam Measurement with Averaging Pitot Tube Flowmeters Always Shows Errors
September 15, 2025
Abstract Averaging Pitot tube flowmeters are often applied in steam measurement due to their simple structure and low pressure loss....
Read More
Pneumatic Conveying: Principles, Pressure Control, and Industrial Applications
September 15, 2025
Abstract Pneumatic conveying is a widely used method for transporting powders and granular materials in modern industries. By using compressed...
Read More
How to Avoid Common Level Gauge Problems: Start with Proper Installation
September 15, 2025
Abstract Level measurement is a critical element of industrial process control, directly affecting production safety, reliability, and efficiency. Commonly used...
Read More
How to Select the Differential Pressure Transmitter Range Based on Process Conditions
September 15, 2025
When choosing the range for a differential pressure (DP) transmitter, it’s essential to consider both process conditions and the transmitter's...
Read More
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...
Read More
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...
Read More
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,...
Read More
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...
Read More
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...
Read More
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...
Read More
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...
Read More
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...
Read More
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...
Read More
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...
Read More
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...
Read More
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...
Read More
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...
Read More
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...
Read More