Instrumentation

When both a variable frequency drive (VFD) and a control valve are available as operational tools, liquid level control systems are often designed with two single-loop controllers, LIC1 and LIC2, as shown in the diagram above. As many of us know, when there is one controlled variable and two manipulated variables, several control strategies are […]

Measurement testing, also known as metrology, is the science of measurement, which involves the process of determining the physical properties or parameters of an object or substance through a series of precise tests. In physics, this often refers to the use of specialized instruments to measure objects according to specific, standardized procedures. It includes activities

Introduction In chemical engineering, the use of fluorine-lined valves is essential for handling corrosive and high-purity water conditions. The primary materials used for fluorine lining are Polytetrafluoroethylene (PTFE) and Perfluoroalkoxy Alkane (PFA). This article provides a detailed comparison between PTFE and PFA in terms of chemical stability, electrical insulation, wear resistance, non-stick properties, hardness, temperature

Introduction Smart Water Management (SWM) refers to the integration of modern technologies such as the Internet of Things (IoT), big data, cloud computing, and artificial intelligence (AI) to digitalize and intelligently upgrade water supply, drainage, wastewater treatment, and water resource management. The goal is to improve efficiency, reliability, and sustainability in water systems. 1. Core

Introduction Communication is an essential aspect of data transfer in computing and electronics. Two primary methods of data transmission are serial communication and parallel communication. Understanding the differences, advantages, and applications of each helps in choosing the most efficient approach for a given system. 1. What is Serial Communication? Serial communication is a data transmission

The positive leg of a Type K thermocouple consists of a nickel-chromium alloy, while the negative leg is made of a nickel-silicon alloy. The temperature-dependent behavior of a Type K thermocouple is as follows: Low-Temperature Stage (-200°C to 0°C) Electron Migration Suppression:At low temperatures, atomic thermal motion is reduced, making it harder for electrons to

In industrial systems, the management of liquid levels is crucial to the safe and efficient operation of equipment. One critical aspect of this is the use of low-low liquid level interlocks, which are designed to protect systems from damage due to low liquid levels. These interlocks automatically activate certain protective measures when the liquid level

Choosing the correct type of fire extinguisher for instrument rooms and power distribution rooms requires careful consideration. These areas typically house electrical equipment and precision instruments, making them susceptible to Class E fires, which involve energized electrical equipment. I. Fire Extinguishers for Power Distribution Rooms According to the “Design Code for Building Fire Extinguisher Installation”

Introduction Combustible gas detectors play a crucial role in various industries, including metallurgy, petroleum, chemical engineering, coal mining, municipal gas management, storage, transportation, hospitality, and fire prevention. These devices monitor the concentration of combustible gases in the air and trigger an alarm when dangerous levels are detected, preventing fires and poisoning incidents. Many customers often

Introduction Automation instruments play a dual role in chemical production, serving as the “eyes of the process” and the “nervous system of control.” Their reliability directly impacts production safety, efficiency, and product quality. However, instrument failures and unexpected shutdowns remain common and costly issues in the industry. To mitigate high repair expenses and production losses,