What is a pressure gauge?

The pressure gauge is a pressure measurement device. This could be an atmospheric pressure or pressure of gas or liquid. There are many types of pressure manometers, including mercury manometers and digital pressure gauge. The tube is sealed at one end and then the mercury is placed in the tube so that there is no air left at the closed end of the tube. The tube is then bent into a U -shaped, with a closed end in the upper part of one branch, and the open end at the top of the second branch. At this end of the tube, there is no air to create pressure down on the mercury. The open end of the tube can then be exposed to air or gas whose pressure needs to be measured. The difference in the height of mercury on both sides of the manometer provides measuring tklobouk can allow gas pressure to determine.

Because this method of pressure measurement was used in the first days of researchPhysics, the pressure was specified in the units of the "millimeters of mercury" (mm Hg). The pressure measurement of 1 mm Hg concerns the pressure that will lead to one millimeter in the mercury manometer tube. Modern physics have a new name for pressure measurement, called torr. One pressure torr equals 1 mm Hg.

In addition to pressure measurement, a pressure gauge can also be used to measure the speed at which the air flow flows. Moving air creates a lower pressure area than normal atmospheric air. The open end of the gaseous manometer can be placed in the airflow area to determine the speed of movable air by measuring as the pressure changes.

For modern pressure measurement applications, a digital pressure gauge is often used. In medicine, pressureometers can be used to measure blood pressure and small manometers can be used to monitor the pressure in the patient's respiratory tract. Manometers are also used in many industrial environments, in Avionics and weather forecast.