manometer

instrument

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June 30, 2026

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A manometer is an instrument used to measure the pressure of a fluid, which can be a liquid or a gas. The simplest type is a U-tube manometer, which contains a liquid like mercury, oil, alcohol, or water. This instrument compares two pressures by measuring the difference in the liquid levels in the two arms of the U-tube. The pressure difference is calculated by multiplying this height difference by the density of the liquid. A barometer, used to measure atmospheric pressure, is a type of manometer where one side is exposed to the atmosphere and the other is a vacuum. A sphygmomanometer is a specific type of manometer used to measure blood pressure.123

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fluid mechanics
Differential manometers
Instruments for comparing pressures are called differential manometers, and the simplest such instrument is a U-tube containing liquid, as shown in Figure 1A. The two pressures of interest, p₁ and p₂, are transmitted to the two ends of the liquid column through an inert…
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Instruments for comparing pressures are called differential manometers, and the simplest such instrument is a U-tube containing liquid, as shown in Figure 1A. The two pressures of interest, p₁ and p₂, are transmitted to the two ends of the liquid column through an inert…
Read More

Otto Warburg
…he introduced the use of manometry (the measurement of changes in gas pressure) for studying the rates at which slices of living tissue take up oxygen. His search for the cell constituents that are involved in oxygen consumption led to identification of the role of the cytochromes, a family of…
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…he introduced the use of manometry (the measurement of changes in gas pressure) for studying the rates at which slices of living tissue take up oxygen. His search for the cell constituents that are involved in oxygen consumption led to identification of the role of the cytochromes, a family of…
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mercury
Properties, uses, and occurrence
) Barometers and manometers also used its high density and low vapour pressure. However, mercury’s toxicity has led to its replacement in these instruments. Gold and silver dissolve readily in mercury, and in the past this property was used in the extraction of these metals from their ores.
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) Barometers and manometers also used its high density and low vapour pressure. However, mercury’s toxicity has led to its replacement in these instruments. Gold and silver dissolve readily in mercury, and in the past this property was used in the extraction of these metals from their ores.
Read More