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Bourdon Tube Pressure Gauge Lab Report

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The main objective of the experiment is to perform pressure calibration on a Bourdon tube pressure gauge utilizing a dead weight analyzer. Experiment will derive certain principles thruogh the investigation of the encountered errors, evaluation of the maximum degree of uncertainty. 2. Introduction The measurement of pressure intensity at any point in static or moving fluid is implemented by utilizing different kinds of pressure measuring devices. Bourdon tube pressure gauge is a type of these equipments. It has some advantages for utilization of this type of instrument such as reliability, low cost, compactness and simple work method. Bourdon tube pressure gauge includes curved tube of elliptical cross section which is closed at one end. At the …show more content…

Calibrating pressure gauges: The cylinder of the pressure gauge unit is loaded with weight support. There are some steps to cunduct the operation: 1. Unscrew pressure relief knob 2. Press down weight support 3. Screw in pressure relief knob Firstly, press down the hand lever while lifting the cylinder gradually with weight support up to the moment it floats on the oil with sufficient guidance. It might be more accurate to arrange the weight support in a delicate spin. The mass of the support ( 385 g) and diameter of piston (12 mm) are known, and the next step will be calculating the increase of pressure with the help of the following formulae: ; where A - cross-sectional area of piston; F – force; d - diameter of piston; m – mass of load unit; p – Pressure; g – Gravity constant. Technical Data Piston manometer • pressure piston diameter 12 mm • hydraulic cylinder: diameter: 25 mm, length = 225 mm Set of weights • weight holder: 385 g /

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