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Ultrasonic Technology Introduction

Ultrasonic Technology Introduction

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Introduction to Ultrasonic Technology
Ultrasonic technology is applied in gas flow meters and gas concentration sensors. This document outlines the principles and benefits of using ultrasonic measurement for detecting gas flow and oxygen concentration, with a focus on Cubic ultrasonic oxygen sensors.

Advantages

No need for calibration during application
Long lifespan of approximately 5-10 years
Compact size and easy installation
Low cost with high accuracy and good stability
Capability to measure gas concentration and flow simultaneously

Working Principle for Concentration Measurement
The ultrasonic concentration detection theory is based on the variation of sound travel speed due to differences in molecular weight in a binary gas mixture.

Working Principle for Flow Measurement
The ultrasonic oxygen flow meter measures the relationship between sound wave travel time and flow in a medium. The actual propagation velocity of the acoustic wave in the fluid is a combination of the sound wave's propagation velocity in the stationary state of the medium and the axial average velocity of the fluid in the direction of acoustic wave propagation. The relationship between downstream and counter-current propagation times is expressed in the provided equations.

Catalog excerpts

Ultrasonic Technology Introduction Ultrasonic technology can be utilized in gas flow meter and gas concentration sensor. This paper presents the principle and advantages of Ultrasonic measurement to detect gas flow and oxygen concentration and overview of Cubic ultrasonic oxygen sensors. Working principle for flow measurement Ultrasonic oxygen flow meter is to measure the sound waves in the flow of media in the relationship between the time and the flow as the principle. Generally speaking, the actual propagation velocity of the acoustic wave in the fluid is composed of the component of the propagation velocity of the sound waves in the stationary state of the medium and the axial average velocity of the fluid in the direction of acoustic wave propagation weight. As shown in below Figure, the relationship between the downstream and counter current propagation times and the quantities is: Working principle for concentration measurement Ultrasonic concentration detection theory: when the binary gas mixture composition has molecular weight difference, sound travel speed varies from different gas composition. Advantages ◆No need calibration in application ◆Long lifetime, around 5-10 years ◆Compact size, easy to install ◆Low cost, high accuracy, good stability ◆Gas concentration and flow can be measured together Wuhan Cubic Optoelectronics Co., Lt

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Ultrasonic Technology Introduction

Ultrasonic Technology Introduction

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