Construction And Working Of Bourdon Tube Pressure Gauge Pdf

By Aram A.
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09.12.2020 at 04:34
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construction and working of bourdon tube pressure gauge pdf

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Mechanical contacts are used as slow acting contacts or with magnetic snap contacts.

The Bourdon pressure gauge uses the principle that a flattened tube tends to straighten or regain its circular form in cross-section when pressurized. Although this change in cross-section may be hardly noticeable, and thus involving moderate stresses within the elastic range of easily workable materials, the strain of the material of the tube is magnified by forming the tube into a C shape or even a helix, such that the entire tube tends to straighten out or uncoil, elastically, as it is pressurized. In practice, a flattened thin-wall, closed-end tube is connected at the hollow end to a fixed pipe containing the fluid pressure to be measured.

Bourdon Tube

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The Bourdon pressure gauge operates on the principle that, when pressurized, a flattened tube tends to straighten or regain its circular form in cross-section. This deflection is proportional to the applied pressure when calibrated.

The other end or free end of the device is sealed by a tip. This tip is connected to a segmental lever through an adjustable length link. The lever length may also be adjustable. The segmental lever is suitably pivoted and the spindle holds the pointer as shown in the figure.

A hair spring is sometimes used to fasten the spindle of the frame of the instrument to provide necessary tension for proper meshing of the gear teeth and thereby freeing the system from the backlash. Any error due to friction in the spindle bearings is known as lost motion. The mechanical construction has to be highly accurate in the case of a Bourdon Tube Gauge. If we consider a cross-section of the tube, its outer edge will have a larger surface than 6.

The applied pressure acts on the inner walls of the bourdon tube. Due to the applied pressure, the bourdon tube tends to change in cross — section from elliptical to circular. This tends to straighten the bourdon tube causing a displacement of the free end of the bourdon tube.

This displacement of the free closed end of the bourdon tube is proportional to the applied pressure. As the free end of the bourdon tube is connected to a link — section — pinion arrangement, the displacement is amplified and converted to a rotary motion of the pinion.

As the pinion rotates, it makes the pointer to assume a new position on a pressure calibrated scale to indicate the applied pressure directly.

As the pressure in the case containing the bourdon tube is usually atmospheric, the pointer indicates gauge pressure. Operation of Bourdon tube 7. You just clipped your first slide! Clipping is a handy way to collect important slides you want to go back to later. Now customize the name of a clipboard to store your clips.

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Pressure Measurement – Bourdon Gauge -Working Principle Advantages and Disadvantaged

Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. See our User Agreement and Privacy Policy. See our Privacy Policy and User Agreement for details. Published on Feb 27, In this PPt u will see 1. Introduction 2.

Bourdon tube pressure gauges are the most frequently used mechanical pressure measuring instruments. It is based on an elastic spring, a c-shaped, bent tube with an oval cross-section. When the internal space of the Bourdon tube is pressurised, the cross-section is thus altered towards a circular shape. The hoop stresses that are created in this process increase the radius of the c-shaped tube. As a result, the end of the tube moves by around two or three millimetres. This deflection is a measure of the pressure. It is transferred to a movement, which turns the linear deflection into a rotary movement and, via a pointer, makes this visible on a scale.

Pressure measurement is the analysis of an applied force by a fluid liquid or gas on a surface. Pressure is typically measured in units of force per unit of surface area. Many techniques have been developed for the measurement of pressure and vacuum. Instruments used to measure and display pressure in an integral unit are called pressure meters or pressure gauges or vacuum gauges. A manometer is a good example, as it uses the surface area and weight of a column of liquid to both measure and indicate pressure. Likewise the widely used Bourdon gauge is a mechanical device, which both measures and indicates and is probably the best known type of gauge. A vacuum gauge is a pressure gauge used to measure pressures lower than the ambient atmospheric pressure, which is set as the zero point, in negative values e.

Bourdon tube pressure gauge – operating principle

Bourdon Tubes are known for its very high range of differential pressure measurement in the range of almost , psi MPa. It is an elastic type pressure transducer. The device was invented by Eugene Bourdon in the year

Его густые волосы имели натуральный песочный оттенок, а глаза отливали яркой голубизной, которая только усиливалась слегка тонированными контактными линзами. Оглядывая свой роскошно меблированный кабинет, он думал о том, что достиг потолка в структуре АНБ. Его кабинет находился на девятом этаже - в так называемом Коридоре красного дерева. Кабинет номер 9А197.

 - Подтирка для задницы. Беккер не шелохнулся. Что-то сказанное панком не давало ему покоя. Я прихожу сюда каждый вечер.

Это был опытный образец нового компьютера Монокль, разработанного ВМС США для проверки напряжения аккумуляторов в труднодоступных отделениях подводных лодок - миниатюрный аппарат, совмещенный с сотовым модемом, последнее достижение микротехнологии. Его визуальный монитор - дисплей на жидких кристаллах - был вмонтирован в левую линзу очков. Монокль явился провозвестником новой эры персональных компьютеров: благодаря ему пользователь имел возможность просматривать поступающую информацию и одновременно контактировать с окружающим миром.

 Это его прерогатива. Я плачу вам за то, чтобы вы следили за отчетностью и обслуживали сотрудников, а не шпионили за моим заместителем. Если бы не он, мы бы до сих пор взламывали шифры с помощью карандаша и бумаги. А теперь уходите! - Он повернулся к Бринкерхоффу, с побледневшим лицом стоявшему возле двери.  - Вы оба.

Bourdon Tube Pressure Gauge Working Principle Animation


Hubert H.
09.12.2020 at 21:43 - Reply

Bourdon Tube Pressure Gauge Working.

11.12.2020 at 10:10 - Reply

Solutions for pressure, temperature, force and level measurement, flow measurement, calibration and SF 6 gas solutions from WIKA are an integral component of our customers' business processes.

Joanna G.
14.12.2020 at 23:05 - Reply

tube Pressure Gauge. Basic Principle of Bourdon tube pressure gauge: An elastic transducer, that is bourdon tube which is fixed and open at one end to receive the Operation of Bourdon tube: Bourdon tube are simple in construction.

InaquГ­ N.
15.12.2020 at 11:52 - Reply

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