In the field of instrumentation, theoretical knowledge is like the wrench in your hand — it might seem insignificant, but if you lack it, it can cause problems when you need it most! Whether you’re preparing for certification exams or aiming to strengthen your practical skills, understanding circuit diagrams, sensor principles, and troubleshooting logic is […]
Turbine Flowmeter: Key Knowledge for Accurate Measurement Read More »
Instrument tag numbers, often referred to simply as tag numbers, are unique identifiers assigned to instruments and devices used in industrial processes. They play a crucial role in system design, implementation, and maintenance by providing a consistent and logical means of identifying and referencing instruments in technical documentation, control systems, and field operations. Components of
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Pressure gauges are essential devices in industrial systems to monitor and manage pressure levels. Among the various types, electric contact pressure gauges and remote transmission pressure gauges stand out due to their unique features and functionalities. Despite their shared purpose of pressure measurement, they differ significantly in their principles, applications, and advantages. Below is a
1. Basic Principles: How Do Valves Cause Leakage? Valves operate by creating a seal between the valve plug (such as a valve disc, ball, or gate) and the valve seat, cutting off the fluid flow. Leakage typically occurs at two key locations: Seat Leakage: This happens when the valve plug and seat do not make
The Relationship Between Valves and Leakage Rates Read More »
During instrument installation, engineers often face environments unsuitable for safe equipment setup, such as explosive, flammable, cold, dusty, high-humidity, and regions with strong electrical or magnetic fields. In these environments, specific precautions must be taken to ensure safety and compliance. Installation in Toxic Environments When installing instruments in environments with toxic media, careful attention to
Explosion-proof junction box breather valves play a critical role in industrial environments, especially in areas where flammable or explosive gases are present. Below are the key functions of breather valves in explosion-proof junction boxes: 1. Maintaining Pressure Balance During operation, the internal pressure of an explosion-proof junction box may fluctuate due to temperature changes, heat
The Key Functions and Applications of Explosion-Proof Junction Box Breather Valves Read More »
Limestone wet desulfurization technology has long been the mainstream in various industries, not only because the equipment is “robust” and efficient but also because it can maintain relatively stable performance under varying loads, coal qualities, and operating conditions. Engineers who only focus on surface-level processes, such as “spraying, reaction, and gypsum output,” may often be
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Steam, as a critical energy carrier, finds extensive application in industrial heating, power generation, and production processes. This article provides a comprehensive overview of steam types, quality, measurement methods, common challenges, and associated instruments. 1. Types of Steam Steam can be classified into several types based on its pressure, temperature, and state: Saturated Steam Produced
Understanding Steam and Its Measurement Read More »
1. Working Principle of Thermocouples A thermocouple operates based on the Seebeck effect (thermoelectric effect). The core principle is as follows: a closed loop is formed by two different conductors (or semiconductors), A and B. When the two junctions (the hot and cold ends) are at different temperatures, a thermoelectric potential (millivolt-level voltage) is generated
Understanding the Working Principle of Thermocouples and Common Measurement Issues Read More »
Introduction: A common issue in flow measurement systems is the occurrence of small readings even when no flow is present. This phenomenon, caused by zero drift in the meter, can lead to inaccurate data, false alarms, and interference with control systems. The small signal cut-off feature is designed to address this issue by eliminating these
Correct Application of Small Signal Cut-off in Flow Meters: Primary vs. Secondary Tables Read More »
