How does Bourdon tube work?
A Bourdon tube is the working mechanism for any analogue pressure measurement device. It comprises an elastic tube that flexes when subjected to pressure. This movement is harnessed by connecting the tube to a gearing mechanism that in turn connects to a pointer on a scale/gauge.
What is the Bourdon principle?
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. When a gauge is pressurized, the Bourdon creates the dial tip travel to enable pressure measurement.
What is Bourdon tube types?
Bourdon tubes come in three basic types: C-type, spiral-type, and helical-type.
Where are Bourdon tubes used?
The Bourdon and spiral tube are typically used on water systems and diaphragm units on both water and air systems. These mechanical devices can all be connected to a transmitter. The transmitter detects the mechanical change and puts out a signal proportional to pressure.
What is the difference between bourdon tube and diaphragm?
Bourdon tube and diaphragm element: The differences The Bourdon Tube uses a pressure differential, hollow C-shaped spring tube. On the other hand, with the diaphragm element, the pressure is transmitted via a wave-shaped diaphragm to a link and transfers pressure to the movement.
Who invented the Bourdon tube?
Eugene Bourdon
Bourdon tube/Inventors
One of the key inventions of the mid-19th century was the Bourdon gauge. Eugene Bourdon (1808–1884) was a brilliant French watchmaker and engineer who invented the Bourdon gauge in 1849.
Which device fits with bourdon tube?
Bourdon tube pressure gauges are used for the measurement of gauge pressures from 0.6 7,000 bar. They are classified as mechanical pressure measuring instruments, and thus operate without any supply voltage.
What is C type bourdon tube?
1. C-Type Bourdon Tube. This instrument is by far the most common device used to indicate gauge pressure throughout the oil gas industry. A bourdon tube obey Hookes Law, that is within elastic limits. Its free end will experience a movement that is proportional to the fluid pressure applied.
Who invented Bourdon tube?
Eugene Bourdon (1808–1884) was a brilliant French watchmaker and engineer who invented the Bourdon gauge in 1849.
How is pressure deflected in a bourdon tube?
This deflection is proportional to the applied pressure when calibrated. An elastic transducer, that is bourdon tube which is fixed and open at one end to receive the pressure which is to be measured. The other end of the bourdon tube is free and closed.
What are the different types of Bourdon tubes?
Other than C-type, bourdon gauges can also be constructed in the form of a helix or a spiral. The types are varied for specific uses and space accommodations, for better linearity and larger sensitivity. For thorough repeatability, the bourdon tubes materials must have good elastic or spring characteristics.
What is the arc length of a Bourdon pressure gauge?
The bourdon pressure gauges used today have a slight elliptical cross-section and the tube is generally bent into a C-shape or arc length of about 27 degrees. The detailed diagram of the bourdon tube is shown below.
What is lost motion in a bourdon tube?
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 the inner portion.