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Should Fusible Plugs Be Used in Emergency Shut-off Valves in Chemical Plants?

Valve /

1. Function of Fusible PlugsFusible plugs are temperature-sensitive safety components made from low-melting-point alloys. When ambient temperature exceeds a predefined threshold (typically 70–200°C), the plug melts and triggers the emergency shut-off valve (ESV) to close automatically. This serves to: Prevent hazardous media leaks during fire or extreme heat; Protect equipment from thermal damage or explosion; […]

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Standard Installation and Inspection Guidelines for Temperature Instruments

Temperature transmitter /

1. Installation Orientation and Mechanical Requirements Vertical Pipeline Installation:Temperature instruments mounted on vertical pipelines must be installed at a 45° angle against the flow direction to ensure accurate temperature sensing and avoid measurement distortion caused by stagnant flow zones. Mounting Nozzle Length Standard: For flange ratings 150LB, use a 150 mm long nozzle. For 300LB

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The Difference Between Ambient Temperature and Process Temperature

Pressure Transmitter /

In various industrial and scientific contexts, understanding the distinction between ambient temperature and process temperature is crucial. These two terms refer to different temperature measurements, each playing a distinct role in the operation, performance, and safety of equipment and processes. Here’s a detailed breakdown of the differences and their respective importance. What is Ambient Temperature?

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Best Practices for Alarm Setpoint Configuration and Management in DCS Systems

PLC /

Alarm management is a critical aspect of ensuring the safe and stable operation of Distributed Control Systems (DCS) in chemical and process industries. This document outlines key principles and best practices for alarm setpoint configuration, grading, and optimization based on industry standards and operational experience. 1. Alarm Setpoint Fundamentals Alarm values must be configured within

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Reliable Level Measurement in Biomass Fuel Bins: Why 80GHz Radar Technology Excels in Dusty, Humid Conditions

Level meter /

As biomass fuels like Empty Fruit Bunch (EFB) briquettes become increasingly popular for sustainable energy, accurate and maintenance-free level measurement in buffer bins and metering hoppers has become a significant challenge. These storage vessels are typically exposed to high levels of fine dust and moisture vapor, creating harsh conditions that can overwhelm traditional level sensors.

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Key Features of Instrumentation and Automation in the Refining Industry

Instrumentation /

The refining sector forms the first and one of the most critical segments of the petrochemical processing chain. By the end of 2016, China had reached a refining capacity of 750 million tons per annum, accounting for 15% of global capacity and ranking second in the world. Instrumentation and automation systems in refineries are designed

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The Three Most Widely Used Industrial Fieldbus Protocols: PROFINET, Modbus, and EtherCAT

PLC /

Introduction In the field of industrial automation, the choice of communication protocols is a key factor that affects production efficiency, equipment coordination, and system stability. With the continuous advancement of technology, industrial communication protocols have evolved into a variety of standards. Among them, PROFINET, Modbus, and EtherCAT are the most widely used protocols across industries.

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The Application and Advantages of Radar Level Meters in Waste Liquid Measurement

Level meter /

In modern industrial processes, the accurate measurement of waste liquids plays a critical role in environmental protection, resource recovery, and process control. Traditional liquid level measurement methods often struggle to meet the unique requirements associated with waste liquid measurement. However, radar level meters, with their distinct technological advantages, have emerged as a powerful solution in

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Why PID Auto-Tuning Tools Are Still Underutilized in Process Industries: A Technical and Practical Perspective

PLC /

Despite significant advancements in PID auto-tuning technology in both academic and commercial domains, its widespread adoption in real-world industrial process control—especially in process industries such as chemical, petrochemical, power, pharmaceuticals, and food—remains far below expectations. The underlying reasons are multifaceted and complex, spanning technical, operational, and cultural dimensions. 1. Process Complexity and Uncertainty ▸ Nonlinearity

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Understanding Process Flow Diagrams (PFDs) and Piping & Instrumentation Diagrams (P&IDs)

Instrumentation /

1. Introduction In process industries such as chemical, pharmaceutical, petrochemical, and food processing, accurate documentation of system design is crucial. Among the most essential engineering drawings are the Process Flow Diagram (PFD) and the Piping and Instrumentation Diagram (P&ID). These diagrams help engineers and operators understand the process flow, equipment layout, and control logic of

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