5 Questions
Who invented the McLeod gauge?
Herbert McLeod
What is the main principle of the McLeod gauge?
Isolating a known volume of gas and then compressing it to measure the resulting pressure increase, which is directly related to the vacuum level in the system.
What are the main parts of a McLeod gauge?
Mercury reservoir and compression chamber
What material is the compression chamber of a McLeod gauge made of?
Glass
What is the function of the manometer in the McLeod gauge?
To measure the pressure increase resulting from compressing the known volume of gas
Study Notes
Introduction to McLeod Gauge
- The McLeod gauge is an instrument for vacuum measurement invented by American physicist Herbert McLeod in the early 20th century.
- Herbert McLeod was born in 1875 and made significant contributions to the field of vacuum technology.
Instruments
- The McLeod gauge works by isolating a known volume of gas and then compressing it.
- The resulting pressure increase is directly related to the vacuum level in the system.
- A manometer attached to the McLeod gauge measures this pressure increase.
Construction
- A McLeod gauge consists of two main parts: a mercury reservoir and a compression chamber.
- The compression chamber is made of glass and consists of a large bulb and a closed-end capillary tube.
Test your knowledge of vacuum measurement with the McLeod gauge in this quiz. Explore the instrument's construction, working principle, advantages, and disadvantages. Delve into the history and application of this important tool for measuring low-pressure environments.
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