1. BOURDON TUBE

2. THE PRINCIPLE 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 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

3. BOURDON TUBE IT IS A PRESSURE SENSING DEVICE IT IS A PRESSURE SENSING DEVICE CONSISTS OF A TWISTED OR CURVED METAL TUBE CONSISTS OF A TWISTED OR CURVED METAL TUBE THE TUBE IS CONSTRUCTED FROM A THIN WALLED TUBE OF NON CIRCULAR CROSS SECTION THE TUBE IS CONSTRUCTED FROM A THIN WALLED TUBE OF NON CIRCULAR CROSS SECTION

4. CONSTRUCTION

6. MATERIALS The tubes The tubes are made from many alloys,,,,,,,,,,, The tubes The tubes are made from many alloys,,,,,,,,,,, are often heat tempered to optimize elasticity 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 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

7. TYPES OF BOURDON TUBE C TUBE HELICAL TUBE SPIRAL TUBE TWISTED TUBE THE C TUBE IS THE MOST COMMON TYPE

8. TYPES OF BOURDON TUBE

9. PROS CHEAP CHEAP PORTABLE PORTABLE EASY TO USE EASY TO USE NO LEVELING REQUIRED NO LEVELING REQUIRED

10. CONS STATIC MEASUREMENTS ONLY STATIC MEASUREMENTS ONLY LOWER ACCURACY LOWER ACCURACY