Instrumentation

Thermal power plants convert chemical energy into electrical energy through complex thermodynamic processes involving numerous mechanical and chemical reactions. To ensure the efficient, safe, and stable operation of power generation, thermal power plants must be equipped with a comprehensive range of process instruments. These instruments monitor, control, and adjust system parameters to ensure the normal […]

Introduction In recent years, the inspection cycle of Safety Instrumented Systems (SIS) and Distributed Control Systems (DCS) has become a focal point of discussion in China’s chemical industry. Unlike general industrial equipment maintenance, the periodic inspection of SIS and DCS is directly linked to a plant’s automatic protection and regulation capabilities—especially critical in high-risk environments

A potentiometer, often abbreviated as “pot”, is a type of variable resistor widely used in electronic and electrical circuits to adjust voltage or signal levels. It consists of a resistive element and a sliding or rotating contact (wiper) that taps the resistance to provide a variable output voltage. 1. Working Principle of a Potentiometer A

In industrial environments, gas detection probes play a critical role in ensuring personnel and process safety. Proper installation and grounding of these devices are essential to their reliable operation. A common question among engineers and technicians is: “If the gas detector’s housing is already grounded, do we still need to ground the internal circuit?” The

The integration of instrumentation and metrology has long been viewed as a challenge due to their distinct roles in industrial operations. However, with the rise of intelligent, multifunctional tools, this boundary is becoming increasingly blurred. This article explores the potential and limitations of merging these two domains from the perspectives of tool efficiency and professional

In modern machine tools, multiple motors and components often work together to achieve complex mechanical tasks. To ensure operational safety and meet process requirements, these motors and components must follow a predefined sequence and interact with one another. This coordination is achieved through electrical interlocking systems. This article introduces the most commonly used interlocking methods

In large-scale LNG (Liquefied Natural Gas) operations, even minor measurement errors can jeopardize process safety. This article presents a real-world case from a 30,000 Nm³/day LNG project, where a pressure transmitter displayed a slow response and increasing deviation, ultimately traced to a blocked vent hole. Based on this case, we provide three practical measures to

In industrial automation and safety systems, instrument fault safety (also known as fail-safe design) is a crucial principle. It ensures that in the event of a failure—whether in sensors, controllers, or actuators—the process transitions to the safest possible state, preventing accidents, equipment damage, or environmental harm. 🔍 1. What Is Instrument Fault Safety? Instrument fault

Overview The selection of the appropriate installation height for detectors is critical, as it directly impacts their accuracy and lifespan. To ensure optimal performance, various factors must be considered for each type of detector. This guide provides detailed recommendations for installation heights and important precautions for several commonly used detectors. 1. Curtain Infrared Detector Recommended

From Steam to Intelligence: The Evolution of Industrial Revolutions The first industrial revolution ushered in the age of steam, freeing humans from reliance on natural forces such as wind, water, and animal power, and enabling mass production. The second industrial revolution brought about the electric age, where steel giants roared day and night, transforming every