Why PID Controllers Remain Dominant in Industrial Control
October 26, 2025
Despite being considered "low-tech" or overly simple by some engineers, the dominance of PID (Proportional-Integral-Derivative) controllers in the industrial control...
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Why -90kPa Negative Pressure Can’t Be Measured? The Issue May Not Be with the Instrument
October 26, 2025
When selecting pressure transmitters, terms like "absolute pressure" and "gauge pressure" often cause confusion. A user once requested a pressure...
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Can DI and DO Signals Share a Common Cable in SIS Systems?
October 25, 2025
In the design and installation of Safety Instrumented Systems (SIS), one seemingly "convenient" practice—routing Digital Input (DI) and Digital Output...
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Understanding the Steam System in Industrial Plants
October 25, 2025
Steam is one of the most widely used energy carriers in industrial processes. From food processing and pharmaceuticals to chemical...
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Why Setting a 90° Angle for a Butterfly Valve’s Rotary Stroke Can Lead to Errors
October 25, 2025
In industrial automation, the coordination between the valve stroke and positioner is critical for accurate control. Although butterfly valves inherently...
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Overview of DCS System Layout and Components
October 25, 2025
1. General Concept of DCS System A Distributed Control System (DCS) is a computer-based control system used for industrial process...
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Top 10 Essential PLC Knowledge Every Engineer Should Know
October 25, 2025
With the rise of Industry 4.0, smart manufacturing, and digital twin technologies, PLCs (Programmable Logic Controllers) have evolved from traditional...
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Why Pressure Transmitter Diaphragms Require Gold Coating for Hydrogen Measurement
October 25, 2025
When measuring hydrogen gas with a pressure transmitter, it is common to coat the stainless-steel diaphragm with a thin layer...
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Difference Between Surge Protectors and Lightning Arresters
October 24, 2025
Surge protectors and lightning arresters are critical components in protecting electrical systems from overvoltages and transient currents. While they may...
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Don’t Confuse “Accuracy” and “Accuracy Class” in Instruments!
October 24, 2025
In the selection and calibration of instruments, we often hear discussions like: "This pressure transmitter is 0.5 class, the accuracy...
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Applications of Mass Flow Meters in the Petrochemical Industry: A Comprehensive Guide
October 24, 2025
Mass flow meters play a crucial role in accurately measuring multi-phase fluid mass flow. Their key advantages—insensitivity to changes in...
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How to Choose the Right Pneumatic Control Valve
October 24, 2025
Pneumatic control valves are essential components in industrial automation systems. They regulate process parameters like flow rate, pressure, and temperature...
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The Importance and Process of Calibration and Testing for Paperless Recorders
October 23, 2025
In various fields such as industrial automation, pharmaceutical production, and environmental monitoring, paperless recorders have gradually replaced traditional chart recorders...
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When Is HAZOP Analysis Required in Chemical Process Safety?
October 23, 2025
Hazard and Operability (HAZOP) analysis is one of the most essential tools in process safety management.However, many companies still struggle...
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Understanding SFC in PLC Programming: The Language That Makes Logic Visible
October 23, 2025
In the world of PLC programming, most engineers are familiar with Ladder Diagram (LAD) and Structured Text (ST or SCL).These...
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Pressure Gauge Classification and Calibration Cycles: A Detailed Overview
October 23, 2025
Pressure gauges are essential instruments widely used in various industries to measure and monitor pressure. To ensure their reliability and...
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Scientific Selection and Practical Applications of Eight Common Valves
October 23, 2025
In modern industrial pipeline systems, valves play a crucial role in controlling the flow, pressure, and direction of fluids. They...
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Operation Guidelines for Regular Blowdown of Steam Drum
October 23, 2025
1. Control of Impurities and Salts ConcentrationDuring the operation of the steam generator, soluble and insoluble impurities (such as calcium...
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What is the NPSH (Net Positive Suction Head) of a Centrifugal Pump?
October 22, 2025
1. Working Principle of a Centrifugal Pump Before starting, the centrifugal pump must first be filled with liquid. When the...
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Environmental Requirements for Control Rooms, Equipment Rooms, and Electrical Distribution Rooms
October 22, 2025
Proper temperature and humidity control in control rooms, equipment rooms, and electrical distribution rooms is crucial for the efficient and...
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