Name: manometers and gauges for fluid pressure
Uploaded: 2025-02-13T15:43:11.000Z
Duration: 1 min 16 s
Channel: JoVE

A pressão do fluido é medida usando colunas de líquido em tubos, verticalmente ou em uma inclinação, denominada manômetros. A altura da coluna de líquido determina a diferença de pressão.
O manômetro mais simples é um tubo piezômetro usado para medir a pressão. É um tubo vertical aberto na parte superior e conectado a um recipiente, usando o mesmo fluido para indicar a pressão no tubo.
Outro manômetro comumente usado é o manômetro de tubo em U, que consiste em um tubo em forma de U conectado à fonte de fluido. Ele contém um fluido diferente, chamado fluido manométrico, que não se mistura com o fluido cuja pressão está sendo medida.
O manômetro de tubo inclinado tem uma perna inclinada, contendo fluido manométrico que não se mistura com o fluido medido, e a diferença de pressão é lida ao longo da inclinação para aumentar a sensibilidade.
Os manômetros de tubo em U e tubo inclinado são comumente usados para medir a diferença de pressão entre dois recipientes ou pontos dentro de um sistema.
Outros manômetros incluem o manômetro Bourdon, que mede a pressão de fluidos ou gases, e o barômetro aneróide, que mede a pressão atmosférica.

medição da pressão do fluido

Measurement of Fluid Pressure

A pressão do fluido é comumente medida usando dispositivos chamados manômetros, que dependem de colunas de líquido para indicar diferenças de pressão. A altura de uma coluna de líquido em um manômetro reflete a pressão exercida pelo fluido, fornecendo um meio de medição simples, mas eficaz. Diferentes tipos de manômetros atendem a propósitos específicos com base em suas configurações e no tipo de fluidos envolvidos.

Uma forma básica de manômetro é o piezômetro, um tubo vertical aberto na parte superior e preenchido com o mesmo fluido cuja pressão é medida. Quando conectado a um recipiente de fluido, a altura do fluido no tubo se correlaciona diretamente com a pressão no recipiente. Para aplicações mais complexas, o manômetro de tubo em U usa um tubo em forma de U preenchido com um fluido de medição que não se mistura com o fluido que está sendo medido. Esta configuração permite medições de pressão diferencial entre dois pontos.

Outra variante é o manômetro de tubo inclinado, que tem uma perna inclinada. Esta perna inclinada aumenta a sensibilidade ao esticar a escala de medição ao longo da inclinação, permitindo leituras precisas de pequenas diferenças de pressão.

Além dos manômetros, há outras ferramentas para medir pressão atmosférica e de fluidos. O medidor Bourdon, por exemplo, é amplamente usado para medir pressões de gás ou líquido em várias aplicações industriais, enquanto o barômetro aneroide mede a pressão atmosférica e é comumente usado em previsões do tempo e medições de altitude.

Medição da pressão do fluido

A pressão do fluido é medida usando colunas de líquido em tubos, verticalmente ou em uma inclinação, denominada manômetros. A altura da coluna de líquido ...

Education

JoVE Core

Civil Engineering

Engenharia Civil

Unit 1

Unidade 1

Fluid Statics

Estática dos Fluidos

KEY TERMS AND CONCEPTS

TERMOS E CONCEITOS-CHAVE

manometers and gauges for fluid pressure

Fluid pressure is measured with manometers and related gauges. These tools use a liquid column to show pressure differences. The height of the column gives a simple reading of the force the fluid exerts.

A basic manometer is the piezometer. It is a vertical tube that is open at the top and filled with the same fluid being measured. When the tube connects to a container, the fluid height in the tube matches the pressure inside that container.

For more detailed measurements, the U-tube manometer is used. It has a U-shaped tube filled with a gauge fluid that does not mix with the fluid being measured. This setup is useful for measuring the pressure difference between two points.

The inclined-tube manometer is another form of manometer. One leg of the tube is tilted. This incline makes the scale stretch out, so it is easier to read very small pressure differences.

Other pressure tools are also used in practice. The Bourdon gauge measures gas or liquid pressure in many industrial settings. The aneroid barometer measures atmospheric pressure and is used in weather forecasting and altitude measurements.

Manometers and Gauges for Fluid Pressure

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measurement of fluid pressure

Fluid pressure is measured with manometers and related gauges. These tools use a liquid column to show pressure differences. The height of the column gives a simple reading of the force the fluid exerts. A basic manometer is the piezometer. It is a vertical tube that is open at the top and filled with the same fluid being measured. When the tube connects to a container, the fluid height in the tube matches the pressure inside that container. For more detailed measurements, the U-tube...

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key terms and concepts

Learn how piezometers, U-tube and inclined manometers, Bourdon gauges, and aneroid barometers measure fluid and atmospheric pressure in practical settings.

Manometers and Gauges for Fluid Pressure | JoVE K12

JoVE Core Civil Engineering provides a foundational exploration of essential construction materials in civil engineering, focusing on bricks, stones, steel, wood, and concrete through easy-to-understand animated videos. This collection covers the properties, manufacturing processes, and practical applications of these materials. Additionally, the accompanied science-in-action videos demonstrate the research experiments performed in laboratories.

civil engineering

Manometers and Gauges for Fluid Pressure

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