Answered: Figure 1 shows a pressure transducer…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

Figure 1 shows a pressure transducer based on Bourdon tube concept.

a. Indicate the functional elements of the device in the form of block diagram.

b. Suggest appropriate secondary sensing element to convert the mechanical variable into an electrical signal. Sketch the proposed mechanism.

Bourdon tube
Pressure 'p'
Scale
Lever
Gearing Toothed sector
Figure 1
Pointer
Displacement

Expert Solution

Step 1: sub part 1

Based on the general concept of a Bourdon tube pressure transducer, the important functional elemets are:

Input: This is where the pressure to be measured is applied.
Bourdon Tube: This is the primary sensing element. It is a curved tube that tends to straighten out when internal pressure is increased. The degree of straightening or movement is proportional to the applied pressure.
Mechanical Linkage: This transfers the movement of the Bourdon tube to the sensing element (pointer movements using gear and other mehcanical arrrangements).
Pointer & scale.

The block diagram to demonstrate is given below.

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