Measuring Pressure with Pressure Gauges

What is Gauge Pressure?

Gauge pressure refers to normal atmospheric pressure. It describes the deviation of the pressure from standard atmospheric pressure and can be measured in various ways, including BAR and PSI. Gauge pressure is a globally used term and can be positive or negative.

Pressure Gauge Formula

Pressure Gauge Types

Each type of pressure gauge must be suitable for its specific task and for demanding industrial applications and frequent use.

The following sections explain some of the most common types of pressure gauges in more detail.

Absolute pressure gauges
...measure the total pressure exerted on a system relative to a perfect vacuum (zero absolute pressure). This differs from pressure gauges with a manometer, which measure pressure relative to the actual atmospheric pressure.

Differential pressure gauges
...are used to measure the pressure of hydraulic fluid in a system. These gauges convert the fluid pressure to a readable format, such as PSI or BAR, using internal sensors such as a Bourdon tube or a digital transducer.

Analog pressure gauges
...use a needle to indicate pressure on a dial. They operate by converting the pressure from a sensor element such as a Bourdon tube or diaphragm into a mechanical mechanism that moves a needle across a scale.

Digital pressure gauges
...are electronic instruments that measure system pressure and display it on a digital screen. They offer greater accuracy and readability than traditional mechanical gauges. They use electronic sensors to convert pressure measurements into a digital format.

Atmospheric pressure gauges
...also called barometers, measure the weight of the air pressing down on the Earth's surface. They differ from standard pressure gauges, which measure the pressure of a system relative to atmospheric pressure.

Hydraulic pressure gauges
...measure and display the pressure of hydraulic fluid in a system. They work by converting the fluid pressure into a readable value, such as PSI or BAR, on an analog dial or digital display.

Image.. nstrumentationtools.com
Bourdon Tube Pressure Gauge Working Principle

Pressure Gauge Manufacturers

Pressure gauge manufacturers offer high-quality instruments for various applications. However, choosing the best brand for your needs is essential. Manufacturers offer a variety of types, designs, and applications, so making the right choice is crucial.

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