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Bourdon gauge
Bourdon gauge is a type of aneroid pressure gauge consisting of a flattened curved tube attached to a pointer that moves around a dial. As the pressure in the tube increases, the tube tends to straighten and the pointer indicates the applied pressure.
------------>[bourdon tube]--------->[level & gear]---------->[pointer,scales]-------> pressure small amplified pressure displacement displacement
Normally using a calibrated bellows or bourdon tube. As pressure is sensed by the device it inflates the tube or bellow which in turn causes the needle to rotate. Pre-seventies pitot and static systems on aircraft use this very technology to relay information like true air speed to the pilots.
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.
Bourdon gauge
Bourdon's tube pressure gauge cannot be used to measure negative pressure. This is because absolute pressure must be measured and the Bourdon gauge only indicates the gauge pressure.
Pressure.
Eugene Bourdon invented and patented the Bourdon tube pressure gauge.
A Bourdon Tube or a Bellows gauge
Bourdon gauge is a type of aneroid pressure gauge consisting of a flattened curved tube attached to a pointer that moves around a dial. As the pressure in the tube increases, the tube tends to straighten and the pointer indicates the applied pressure.
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------------>[bourdon tube]--------->[level & gear]---------->[pointer,scales]-------> pressure small amplified pressure displacement displacement
In 1849, the Bourdon tube pressure gauge was patented in France by Eugene Bourdon.
A bourdon tube is a type of curved tube where the inside radius is smaller than the outside radius. As Force = Pressure x Area this means that when a pressure is applied internally to the tube the greater surface area on the outside causes the tube to straighten out. This is connected via a mechanical linkage to dial on the front of the gauge. Your typical industrial pressure gauge is the Bourdon Tube tyep.
pressure gauge works on hooks law principle ,when we applying pressure in end connection of the pressure gauge ,the same pressure operating at end of the bourdon tube.
A bourdon gauge is a type of aneroid gauge. It is used to measure pressure.