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How can a dead weight tester used to calibrate a gauge pressure?
Wiki User
∙ 13y ago
Place the gauge inside a sealed piston. Place the weight on top of the piston and read the pressure from the gauge. The force exerted by the weight multiplied by the area of the piston will give you the actual pressure exerted on the gauge. Using SI units. A 5 kg weight placed on a 0.25 meter diameter piston will create a pressure of around 1 pascal (Nm^2). 5N*Pi*0.25m^2.
Wiki User
∙ 13y ago
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because it uses those cylenders weights which are called dead weights " aliving weight is any weight that could changr"
Why dead weight tester is used in industry?
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The piston of a gauge pressure rotating until its freely suspend because the weight of the piston is balanced by the centrifugal force. The centrifugal force is created by the rotation of the piston and is equal to the weight of the piston.
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