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Requirements for Medium in Electromagnetic Flowmeters

Flow meter /

Electromagnetic flowmeters are widely used for measuring the flow of conductive fluids in various industries. However, their performance depends significantly on the properties of the medium being measured. To ensure accurate and reliable operation, specific requirements must be met regarding the conductivity, uniformity, temperature, pressure, and chemical and physical characteristics of the medium. Below is […]

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Comparison Between Magnetic Flip Board Level Gauge and Magnetostrictive Level Gauge

Level meter /

Accurately measuring liquid levels is crucial in various industries such as oil and gas, chemical processing, and power generation. Two commonly used devices for liquid level measurement are Magnetic Flip Board Level Gauges (also known as Magnetic Float Level Gauges) and Magnetostrictive Level Gauges. This article provides a comprehensive comparison of these two technologies across

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Core Applications and Technical Advantages of Bimetal Thermometers

Temperature transmitter /

Bimetal thermometers are widely used mechanical temperature measurement devices known for their robust design, wide temperature range, and ability to function without external power supply. Based on the principle of thermal expansion, they convert temperature changes into mechanical displacement via bimetallic strips, which drive a pointer on a dial for direct reading. Due to their

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Installation Guidelines for Electromagnetic Flowmeters

Flow meter /

Electromagnetic flowmeters are precise instruments used in various industries for flow measurement. Proper installation is critical to ensure accuracy, reliability, and longevity of the device. This article outlines key installation considerations and provides detailed guidelines for achieving optimal performance. 1. Transportation and Handling Guideline: For flowmeters smaller than DN100 (4 inches), avoid applying force to

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Routine Maintenance Guide for Four-Wire Ultrasonic Level Transmitters

Level meter /

Ultrasonic level transmitters are widely used in industrial applications for continuous level monitoring. Proper maintenance ensures their measurement accuracy and prolongs service life. This guide outlines detailed and practical maintenance steps for four-wire ultrasonic level meters. 1. Sensor Surface Cleaning Regular Cleaning Use a clean, soft cloth or cotton swab moistened with alcohol to gently

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A Typical Case of Emergency Shutdown Due to Misoperation of Regenerated Catalyst Slide Valve in FCC Unit

Instrumentation /

1. Background In a 1 million tons/year Fluid Catalytic Cracking (FCC) unit, the regenerated catalyst slide valve (commonly referred to as the “spent catalyst slide valve”) plays a critical role. It is used to: Cut off catalyst circulation during startup and shutdown; Regulate the catalyst circulation rate during normal operation to control stripper level and

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Key Considerations for PLC System Configuration

PLC /

Introduction To make full use of a PLC (Programmable Logic Controller), two main tasks must be accomplished: hardware system configuration and user program design. This article focuses on how to configure the PLC system properly. System configuration refers to the hardware composition of the PLC. It includes selecting appropriate modules, quantities, and combinations based on

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Why Is a Reset Switch Essential in Interlock Systems? Design Principles, Logic, and Application

Instrumentation /

In the field of industrial automation, interlock logic diagrams act as the “safety brain” of a system—precisely controlling equipment startup/shutdown, alarm responses, and emergency shutdown sequences. They are directly tied to personnel safety and the stable operation of multimillion-dollar facilities. An improperly designed reset switch can render interlock protection ineffective. Even worse, a small error

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Intrinsically Safe Instruments: A Comprehensive Overview

Flow meter /

Intrinsically Safe (IS) Instruments are critical safety devices designed for use in hazardous environments where explosive gases, vapors, or dust may be present. These instruments operate by limiting the electrical energy available to a level that is too low to ignite a potential explosive atmosphere, thus providing a key layer of safety in industries such

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