what are the advantages of a u-tube manometer than a piezometer
A double tube manometer measure pressure. Manometers use liquid in a column and balance it against the pressure that they are measuring.
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Compound Manometer is an 'U' Tube manometer having 'T' joints at appropriate equal elevation in the columns of U tube manometer where the impulse lines are to be connected to measure Differential Pressure. T joint allows the use Two liquids simultaneously in the manometer. i.e. the liquid who's differential pressure is to be measured being lighter it will gauge at the top and a heavier liquid which does not dissolve with the lighter fluid will gauge at the bottom. Elevation difference in lighter liquid as well as heavier liquids gives their respective differential pressure. Both the differential pressure will be equal in terms of Pressure Units. Since two liquids are used simultaneously this type of U tube manometer is called Compound Manometer.
A manometer is a device for measuring pressures, especially the word is used for pressure meters that are constructed to use a liquid in a transparent U-tube. A peizometer is specifically about measuring pressures in ground water wells.
A diffrntial u tube manometer is a long bent tube whos both ends r conctd at points in a pipe where presure is to b measurd.Take d reading in d first tube h1 in mm n do similarly in secnd tube n its h2. Den d differential head wil b h1-h2.
it is simple to construct,cheap,very accurative
the scale that is attached to the inclined tube are more sensibly then scale in vertical form that are in U-tube manometerdisadvantage is that it is costly and tough to handle.
I think you're looking for U-Tube Manometer
the most common type of manometer are u-tube type,inclined and the cistern type of manometer
Manometer.
air, fluids and very low pressures equal & unequal leg u tube manometer, cistern manometer, u tube manometer.
A double tube manometer measure pressure. Manometers use liquid in a column and balance it against the pressure that they are measuring.
The U-tube in an inverted differential manometer is inverted because it allows the device to measure pressure differences accurately. When one side of the U-tube is connected to a system with higher pressure than the other side, the liquid in the U-tube moves to create a visible difference that can be measured. If the U-tube were not inverted, the liquid would not move, and accurate pressure readings could not be obtained.
Alcohol
differential pressure gauge.
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otto von guericke