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Explain the working of McLeod gauge for measurement of very low pressure.
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Explain the working of McLeod gauge for measurement of very low pressure.

User Sandor Davidhazi
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Step-by-step explanation:

McLeod gauge:

It is used to measure very low pressure of gas.It measure gas pressure by the help of mercury(Hg).it measure absolute pressure of gas.

McLeod gauge on the principle of Boyle's law.Boyle's law state that ,at constant temperature the pressure of gas is directly proportional to its volume.From Boyle's law


P_1V_1=P_2V_2

A sample of gas is taken from vacuum then its pressure is measured by help Hg.

User Sumit Gera
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