BOURDON TUBEBOURDON TUBE

THE PRINCIPLETHE PRINCIPLE

THE BOURDON PRINCIPLE THE BOURDON PRINCIPLE BELIEVES THAT A FLATTENED BELIEVES THAT A FLATTENED TUBE WILL REFORM OR GROW TUBE WILL REFORM OR GROW CONSIDERABLY IN THE CROSS CONSIDERABLY IN THE CROSS SECTIONAL ASPECT WHEN A SECTIONAL ASPECT WHEN A PRESSURE IS APPLIED. THIS PRESSURE IS APPLIED. THIS CHANGE CAN BE REPRESENTED BY CHANGE CAN BE REPRESENTED BY A NEEDLE ON A GAUGEA NEEDLE ON A GAUGE

BOURDONBOURDON TUBETUBE

IT IS A PRESSURE SENSING DEVICEIT IS A PRESSURE SENSING DEVICE CONSISTS OF A TWISTED OR CONSISTS OF A TWISTED OR

CURVED METAL TUBECURVED METAL TUBE THE TUBE IS CONSTRUCTED FROM THE TUBE IS CONSTRUCTED FROM

A THIN WALLED TUBE OF NON A THIN WALLED TUBE OF NON CIRCULAR CROSS SECTIONCIRCULAR CROSS SECTION

CONSTRUCTIONCONSTRUCTION

MATERIALSMATERIALS

The tubes The tubes are made from many The tubes The tubes are made from many alloys,,,,,,,,,,, alloys,,,,,,,,,,,

are often heat tempered to optimize elasticityare often heat tempered to optimize elasticity when selecting the tube the fluid measured when selecting the tube the fluid measured

needs to be accounted for. Steel tubes are needs to be accounted for. Steel tubes are used but have a very limited life due to used but have a very limited life due to corosion, for very high pressure systems corosion, for very high pressure systems berylium copper is usedberylium copper is used

TYPES OF BOURDON TUBETYPES OF BOURDON TUBE

C TUBEC TUBE

HELICAL TUBEHELICAL TUBE

SPIRAL TUBESPIRAL TUBE

TWISTED TUBETWISTED TUBE

THE C TUBE IS THE MOST COMMON THE C TUBE IS THE MOST COMMON TYPETYPE

TYPES OF BOURDON TUBETYPES OF BOURDON TUBE

PROSPROS

CHEAPCHEAP PORTABLEPORTABLE EASY TO USEEASY TO USE NO LEVELING REQUIREDNO LEVELING REQUIRED

CONSCONS

STATIC MEASUREMENTS ONLYSTATIC MEASUREMENTS ONLY LOWER ACCURACYLOWER ACCURACY