State how pressure measurement can be done using Dead weight tester.

State how pressure measurement can be done using Dead weight tester.
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Answer :

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The handle is fully drawn out and the oil is allowed to enter in the cylinder (i.e. gauge and piston) The weight to be measured is placed on the platform. Now the handle is turned in clockwise direction so that pressures will buildup on the gauge side as well as at platform side. Increase the pressure by rotating the handle clockwise until enough pressure is developed inside the cylinder and lifts the platform with weights placed on it and it floats freely within the limit stops. The product of the area of the piston and the pressure indicated on the gauge is equal to the weight under measurement.

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