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cause of the about of nice bits floating around

Mercury is better because 1) it doesn't evaporate 2) water has a density 13.6 times lower than mercury, so for some applications the size of the manometer would have to be very large.

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To measure pressure above atmospheric pressure you would use a?

mercury manometer


What happen when mercury used in inverted manometer?

When mercury is used a manometer fluid and the manometer tube is inverted it will measure the small pressure difference in liquids. This is a tool used by scientists.


To measure a pressure above atmospheric pressure you would use?

A pressure gauge or manometer is typically used to measure pressure above atmospheric pressure. These devices can accurately measure the pressure difference between the system being measured and atmospheric pressure.


Why you use mercury manometer to measure atmospheric pressure at sea level rather alcohol?

Mercury has two advantages over alcohol when it comes to measuring pressure in a manometer: 1) it is far denser than alcohol. A column of mercury need only be about 760 mm ( about 3/4 of a meter) high to exert a pressure equal to atmospheric pressure at sea level. Alcohol would have to be over 13 meters high to reach the same pressure! (rather impractical) 2) Mercury has a very low vapor pressure so it doesn't evaporate when exposed to the atmosphere. It also contributes a negligible amount of pressure above the column on the sealed end of the manometer for pretty much any atmospheric temperature. Alcohol has a significant vapor pressure so it would tend to evaporate when exposed to the atmosphere. It also has a high enough vapor pressure that it would contribute a noticeable amount of pressure on the sealed end of the manometer - and the pressure would vary quite noticeably over the range of temperatures that atmospheric manometers are commonly exposed to - so the manometer reading would always have to be corrected for temperature - more so than the mercury manometer must be.


How do you measure negative pressure?

Negative pressure is typically measured using a device called a manometer, which can accurately detect and quantify the pressure difference between the reference point and the negative pressure source. The manometer displays the pressure reading by using a fluid column that moves based on the pressure applied to it, providing a visual indication of the negative pressure level.

Related Questions

Is manometer used to measure the pressure of liquid?

yes,manometer is an instrument . It is used to measure pressure of liquid.


To measure pressure above atmospheric pressure you would use a?

mercury manometer


What happen when mercury used in inverted manometer?

When mercury is used a manometer fluid and the manometer tube is inverted it will measure the small pressure difference in liquids. This is a tool used by scientists.


How do you use a manometer?

A manometer is a device that is used to measure the pressure of a fluid. The U-shaped glass tube is partially filled with a liquid, usually mercury. The difference between the height of the mercury corresponds to the difference between the pressure of the fluid in the container and the atmospheric pressure.


To measure a pressure above atmospheric pressure you would use?

A pressure gauge or manometer is typically used to measure pressure above atmospheric pressure. These devices can accurately measure the pressure difference between the system being measured and atmospheric pressure.


How does a mercury pressure device work?

A mercury pressure device, such as a manometer, works based on the principle that the pressure of a fluid is directly proportional to the height of the fluid column. In a mercury manometer, a column of mercury is used to measure the pressure difference between two points. The difference in height of the mercury column indicates the pressure difference between the two points.


What has a glass tube with the open end submerged in liquid mercury?

A manometer. Used to measure pressure.


What is an open arm manometer?

It is a type of manometer, an object used to measure the pressure of different things, and the open armed manometer allows for the atmospheric pressure in the tube of the manometer. So the sample gas pressure pushes on the mercury that is already being pushed on by the atmospheric pressure. Then you add the atmospheric pressure to the change in the mercury (in mm) and that gives you your pressure. It's like a tire gauge.


What are the classes of manometer?

Manometers can be classified into two main types: mercury (fluid column) manometers and pressure-sensing element manometers. Mercury manometers use the height of a mercury column to measure pressure, while pressure-sensing element manometers use a diaphragm, Bourdon tube, or bellows to measure pressure.


How do you set up manometer?

To set up a manometer, first ensure that it is securely mounted in a vertical position. Fill the manometer with a fluid, typically mercury or water, making sure there are no air bubbles. Connect the manometer to the system you want to measure the pressure of, and then observe the height difference of the fluid levels in the manometer to determine the pressure.


Who invented the mercury manometer?

The mercury manometer was invented by Evangelista Torricelli in 1643. Torricelli was an Italian physicist and mathematician who discovered that the height of a column of mercury in a tube varied with atmospheric pressure, leading to the creation of the mercury manometer for measuring pressure.


What is the instrument used to determine air pressure is called?

The instrument used to determine air pressure is called a barometer. A simple barometer is a long glass tube filled with mercury that it turned upside down into another container filled with mercury.