BOURDON TUBE
THE PRINCIPLE
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THE BOURDON PRINCIPLE
BELIEVES THAT A FLATTENED TUBE
WILL REFORM OR GROW
CONSIDERABLY IN THE CROSS
SECTIONAL ASPECT WHEN A
PRESSURE IS APPLIED. THIS
CHANGE CAN BE REPRESENTED BY
A NEEDLE ON A GAUGE
BOURDON TUBE
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IT IS A PRESSURE SENSING DEVICE
CONSISTS OF A TWISTED OR
CURVED METAL TUBE
THE TUBE IS CONSTRUCTED FROM
A THIN WALLED TUBE OF NON
CIRCULAR CROSS SECTION
CONSTRUCTION
MATERIALS
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The tubes The tubes are made from many
alloys,,,,,,,,,,,
are often heat tempered to optimize
elasticity
when selecting the tube the fluid measured
needs to be accounted for. Steel tubes are
used but have a very limited life due to
corosion, for very high pressure systems
berylium copper is used
TYPES OF BOURDON TUBE
C TUBE
HELICAL TUBE
SPIRAL TUBE
TWISTED TUBE
THE C TUBE IS THE MOST COMMON
TYPE
TYPES OF BOURDON TUBE
PROS
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CHEAP
PORTABLE
EASY TO USE
NO LEVELING REQUIRED
CONS
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STATIC MEASUREMENTS ONLY
LOWER ACCURACY