In industrial automation and safety-critical systems, ensuring the integrity of Safety Instrumented Systems (SIS) is crucial. The role of SIS in an industrial environment is to mitigate risks and initiate protective actions independently from regular operational control systems, specifically the Distributed Control System (DCS). A common question in this domain is whether a DCS can […]
Abstract The immersion depth of industrial temperature sensors such as thermocouples, resistance temperature detectors (RTDs), and bimetallic thermometers directly affects the accuracy and reliability of measurement. Despite clear guidelines in standards such as SH/T 3005-2016, inconsistent practices are often observed in engineering applications. This article summarizes the principles of thermometer immersion depth, analyzes common misconceptions,
How Deep Should a Thermometer Be Inserted for Accurate Measurement? Read More »
Abstract In radar level measurement, users are often confused between normal-temperature and high-temperature radar level transmitters. The key difference lies in temperature resistance and structural design. This article explains their distinctions, common working principles, and typical application scenarios, providing a quick selection guide for engineers. 1. Core Differences 1.1 Temperature Resistance Normal-Temperature Radar Level Transmitter:Designed
In industrial projects such as boilers, pressure vessels, and chemical processing equipment, the same material grade may be specified in different product forms (pipes, fittings, forgings, castings, and plates). To ensure consistency in design and procurement, engineers often need to cross-reference material standards. The following table provides an equivalency overview for commonly used American standards.
Common ASTM/ASME Material Equivalency for Product Forms Read More »
Abstract This case study describes a packaging system failure in a polyacrylamide production line, triggered by an accidental disconnection of a weighing sensor during routine cleaning. The incident highlights the importance of preventive maintenance and operational discipline in industrial environments. Root cause analysis, corrective actions, and preventive measures are discussed to provide guidance for similar
Abstract Real-Time Optimization (RTO), Advanced Process Control (APC), and Self-Optimizing Control (SOC) are complementary approaches in hierarchical control structures. While RTO aims to deliver economically optimal setpoints, APC translates them into feasible tactical targets, and PID controllers execute the actions. This paper reviews their interrelationship, practical boundaries, and economic feasibility, with examples from process industries.
Abstract Water hammer (hydraulic shock) is a common yet often underestimated phenomenon in both industrial and municipal fluid systems. It can cause serious damage, including instrument failure, flange deformation, and pipeline rupture. This article explains the principles, mechanisms, case studies, international standards, engineering protection strategies, and future development directions for water hammer prevention and control.
Understanding Water Hammer Effect and System Protection Read More »
Abstract Instrument lifecycle management is a systematic and digitalized approach that treats the entire process of an instrument—from design to disposal—as one integrated chain. By connecting data and ensuring collaborative management across each stage, organizations can achieve safety, reliability, cost efficiency, and regulatory compliance. 1. Lifecycle Stages of Industrial Instruments 1.1 Design & Selection Requirement
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Introduction Temperature transmitters are among the most widely used instruments in industrial measurement and control. By converting temperature signals into standardized electrical outputs, they play a vital role in ensuring product quality, process safety, and energy efficiency. Depending on the measurement method, temperature transmitters can be broadly classified into contact-type (e.g., RTDs, thermocouples) and non-contact
1. Introduction Pipeline purging is a common industrial operation that plays a critical role in ensuring system reliability and safety. It removes impurities such as welding slag, rust, and other debris from pipelines, preventing potential damage to downstream equipment. In applications such as syngas production and compressor systems, effective purging is essential for stable and
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