MechanicalScience

NG0H202

Review of Mechanical Force

Laboratory Experiment

Lecturer: Chandran NachiappanName: Adrian Secan Enrolment Number: 12032239

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I. Summary

As a result of this report I can say that some errors may appear when the experiment is done. These errors always cause another mistakes in the final result of the experiment. The main error which appears in the experiment is caused by the person who read the angles from the board because it cannot be perfect aligned whit the system of forces.

II. Table of contents

Contents1. Introduction.....................................................................................................................1

2. Procedure.........................................................................................................................2

2.1 Background.................................................................................................................2

2.2The equipment.............................................................................................................3

2.3Methodology...............................................................................................................3

3. Results..............................................................................................................................5

3.1Analytical results of the experiment:...........................................................................5

3.2Drawing results:...........................................................................................................6

4. Discussion of results.........................................................................................................7

5. Conclusion........................................................................................................................8

6. Reference.........................................................................................................................8

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1. Introduction

A pressure transducer measures pressure, typically of gases or liquids. The expression of the force required to stop a fluid from expanding is named pressure.

Pressure transducers can be called: pressure sensors, pressure transmitters, pressure senders, pressure indicators and piezometers, manometers, among other names.

The laboratory experiment was done to calibrate a differential pressure transducer. The purpose of the experiment was finding:

What is the input and output range in the calibration exercise. Determinate the equation of “ best-fit ” line. Determinate the maximum deviation.

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2. Background

For this experiment basic knowledge about: static calibration and Differential Pressure Transducer are required. In the following subsections are presented some information about these topics.

2.11 Static calibration

The most common type of calibration is known as a static calibration. In this procedure, a known value is input to the system under calibration and the system output is recorded. The term "static" refers to a calibration procedure in which the values of the variables involved remain constant during a measurement and they do not change with time. In static calibrations, only the magnitudes of the known input and the measured output are important.

2.12 Differential Pressure Transducer

The Differential Pressure Transducer consist of two pressure inlets P1 and P2 which act on a metal diaphragm placed centrally between the two coils. If the pressures are equal there is no movement of the diaphragm and the inductance in the two coils is the same. If there is any difference between the two pressures, the diaphragm will be deflected to one side, thus resulting in differences in the inductance of the two coils. The difference in inductance of the coils is directly proportional to the pressure difference.

Figure 1 Differential Pressure Transducer scheme

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Figure 2 Differential Pressure Transducer

3. Experimental Procedure and Equipment

4. Results and discussion

5. Conclusion

6. Reference

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