Bourdon tube | Types | Construction and working | Advantages and Disadvantages

By | January 30, 2019

Bourdon tube | Types | Construction and working | Advantages and Disadvantages | Limitations

Hello friends, today in my this video I will tell you about Bourdan Tube, itsi types, construction, working, advantages and Disadvantages. So, let’s start….!

Some short information about Bourdon tube :

Fig. Bourdon tube

Bourdan Tube
Bourdon tubes are used to measure medium and high pressures. They can be used in between 100 kPa to 700 MPa pressure range. They convert pressure into mechanical displacement. Materials used for construction of tubes are phosphor bronze, beryllium copper, stainless steel, etc. Bourdon tubes are commonly used pressure measuring devices.

Types of Bourdon Tube :

There are many types of bourdon tubes.
(a) C-type Bourdon Tube
(b) Spiral Bourdon Tube
(c) Helical Bourdon Tube
(d) Twisted Bourdon Tube
To increase sensitivity and to avoid multiple links between sensing element and indicating element, spiral or helical tubes are used. The types of bourdon tubes are shown in Fig.(a)(b)(c).

Fig. Types of Bourdon tube

Bourdan tube

Construction and Working of Bourdon tube :

Fig. (d) shows construction of c-type bourdon tube. It consists of a metal tube oval-cross section, bent in the form of circular shape having 200 to 250°. The tube has two ends, out of which one end is sealed and closed. This end is connected to pointer and scale through deflection arrangement. The deflection arrangement consists of links, levers, gear, pinion etc.
The pressure to be measured is applied at other end which is open and fixed. This applied pressure produces deflection in the tube which results into tip travel of bourdon tube through the other end. This travel of tip is amplified through mechanical links and pressure is measured pointer and scale.

Advantages of Bourdon tube :

(1) Construction and working is very simple.
(2) Wide range of pressure measurement including high pressure range.
(3) Fairly good accuracy except low pressures and less cost.
(4) Bourdon tubes are also used in liquid, gas filled thermal system for measurement of temperature.
(5) They can be easily tuned with secondary transducers.
(6) Bourdon gauges are more robust than manometers.

Limitations and Disadvantages of Bourdon tube :

(1) Accuracy in precision measurement is limited.
(2) These are influenced by shock and vibrations.
(3) They must be calibrated before use.

So, this is all about the bourdan tube and it’s types, workings, advantages and disadvantages. So, I hope that each and every line is understandable to you and If you liked our Post then please it among your friends.


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