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From PID to APC: The Evolution of Process Control

PLC /

Introduction Process control has undergone significant evolution, transitioning from simple feedback control methods to advanced process control (APC) strategies. Initially, control systems were designed to correct deviations, aligning with human problem-solving habits. This fundamental approach remains at the core of feedback control. The early days of process control were driven by practical needs rather than […]

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A Brief Analysis of Radar Level Measurement in Soybean Meal Storage Tanks

Level meter /

As a common feed ingredient, the precise measurement of soybean meal storage volume has a significant impact on the daily operations of feed mills. This article will explore the application of radar level meters in soybean meal storage tanks and how this technology enables high-precision level measurement. A radar level meter is a device that

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Common Pitfalls in Feeder Instrument Selection and How to Avoid Them

Instrumentation /

Feeders are indispensable in industrial automation, where their performance directly affects the efficiency and quality of production processes. Accurate instrument selection is critical to ensuring precise feeding, system stability, safety, and effective monitoring. This article provides an in-depth exploration of feeder operations, key instrumentation needs, common instrument types with pros and cons, and practical selection

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Choosing the Right Stainless Steel for Instrumentation Wetted Parts: 316L vs. 304L

Flow meter /

Stainless steel is a common material used for the wetted parts of instrumentation due to its corrosion resistance and strength. Among the various stainless steel grades, 316L stainless steel (316LSS) and 304L stainless steel (304LSS) are often considered for applications where the instrument’s components will come into contact with fluids or corrosive substances. However, choosing

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Inefficient Override Control of Feed in Gasoline Hydrotreating Reactors

Instrumentation /

Introduction In the operational analysis of a gasoline hydrotreating unit, it was found that operators frequently needed to adjust the reactor feed manually. This indicates that the existing control scheme does not align well with practical operational requirements. This article reviews the deficiencies of the current design, evaluates its impact, and explores possible solutions to

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Instrument Calibration Guide: Avoiding Common Misconceptions

Instrumentation /

Instrument calibration is a critical process to ensure the accuracy and reliability of measurement devices. However, many users hold several common misconceptions about calibration. This guide aims to clarify these misunderstandings and provide a comprehensive understanding of proper calibration practices. Common Misconceptions about Instrument Calibration 1. Calibration Failure Necessitates Repair or Adjustment Many believe that

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From PID to APC: Evolving with Modern Industry

PLC /

Introduction Proportional-Integral-Derivative (PID) control has been a cornerstone of industrial automation since its invention. Despite its long history, modern industry has transformed significantly, requiring control algorithms to adapt and optimize performance under new conditions. In this article, we will explore the historical development of PID control, the challenges it faces in contemporary applications, and the

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Compliance Requirements for Instrument Cable Trays Installation

Instrumentation /

Installing instrument cable trays properly and in compliance with relevant standards is crucial to ensure safety, functionality, and durability. Below is a detailed guide on how to design and install cable trays that meet regulatory standards. 1. Adherence to Standards and Regulations Cable tray installations must comply with applicable local and international standards, such as:

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Application of Liquid Level Sensors in Transformer Oil Level Monitoring

Level meter /

Introduction to Transformer Oil and Its Importance Transformer oil, a petroleum distillation product, is primarily composed of alkanes and cycloalkanes. This light yellow, transparent liquid serves both insulation and cooling purposes in oil-immersed transformers. Maintaining an appropriate oil level in transformers is crucial for stable operation. Fluctuations, such as excessively high or low oil levels,

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