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In practical applications, the naming relationship between DCS system tag numbers (logical points in the control room) and field instrument tag numbers (physical device labels) typically follows international standards (such as ISA S5.1) or factory-specific conventions. Below are common categories and examples: 1. Flow Measurement Instruments Field Instrument Tag: FT101 (Flow Transmitter) DCS Tag: FIC101: […]

When advanced control technologies began to gain traction, it was often claimed that they offered a smoother control process and better benefits, as depicted in the graph above. However, the truth is that any control technology, when properly implemented, can yield similar outcomes. Today, our understanding of PID control has evolved significantly. We now recognize

Most traditional flowmeters (such as electromagnetic, vortex, and turbine meters) require the pipe to be completely filled with fluid. In partially full pipe conditions, where gas (typically air) exists above the liquid, it can significantly affect the measurement accuracy and even damage the instruments. Below are some flowmeters specifically designed for partially full pipes or

Have you ever encountered a situation where, before disconnecting a terminal, a voltage tester indicates that the circuit is safe, yet you receive an electric shock during or after the disconnection? Some may suggest that the voltage tester was inaccurate or that power was suddenly restored. While this possibility exists, in most cases, the issue

During safety inspections, many companies encounter a troubling scenario: the combustible gas detectors installed in the field do not match the actual gas that could leak. What makes the situation even more challenging is that this discrepancy is often classified as a major safety hazard. Rectifying it can be costly and difficult. So, can gas

Have you ever stood in front of the large screen in a control room, watching numbers and flashing symbols, but had no idea what they meant? Don’t worry! This article will help you understand the soul of factory automation—control loops. What is a Control Loop? In industrial control systems (DCS/PLC), each control loop functions like

Responsibilities of Construction Personnel Summary: After the completion of the project, conduct a technical and quality summary. Work Instructions: Attend the design review and technical handover meetings. Under the project manager’s direction, provide technical handovers to construction personnel. Execution: Strictly follow the construction and acceptance standards. Ensure the inspection system is followed. Adhere to the

Many people think “aging” happens only after several years of use. In reality, the aging of polymer materials begins the moment they are formed. Engineers often encounter: Yellowing or discoloration Loss of mechanical strength Surface roughening or cracking Electrical performance drifting Mold or surface contamination These are not simply “process issues.” They are manifestations of