How Do Bourdon Tube Pressure Gauges Work?

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Bourdon tube pressure gauges are vital tools in the industry. They measure and show the amount of pressure in pipes, tanks, and other equipment. Among their numerous merits is that they keep machines safe and productive, being both accurate and durable. 

Special curved tubes are used to measure pressures, and they are found to be pretty widespread, even in hospitals and factories. In this guide, we will see how Bourdon tub e pressure gauges work, why they are so reliable, and where you can apply them. 

What is a Bourdon Tube Pressure Gauge?

A Bourdon tube pressure gauge is an instrument that indicates the levels of pressure with the use of a curved metal tube known as a “Bourdon tube.” It was named after its inventor, Eugène Bourdon, who invented the tube, which bends under changes in pressure.

The most commonly used gauges in any field are Bourdon tube gauges, simply because they are easy to manufacture and give a good, accurate measurement that can withstand harsh operating conditions. 

Working of a Bourdon Tube Pressure Gauge

A Bourdon tube pressure gauge helps to operate according to how the Bourdon tube acts upon changing the pressure levels. It operates step by step like below. 

Step 1: Pressure Enters the Tube

As the fluid or gas enters the Bourdon tube, it exerts pressure on the inside of the tube. The pressure then pushes against the walls of the tube, making it move. 

Step 2: The Tube Begins to Bend

When the pressure continues to rise, the curved Bourdon tube tries to straighten. The extent to which it bends is determined by the amount of pressure. High pressure bends more, and low pressure bends less.

Step 3: Movement Translate into Reading

At one point, the farther end of the tube will be attached to a mechanical linkage. That connection linkages lead to the needle to the gauge. Where if the tube bends, its linking also follows and revolves in the needle on the dial face. So that reading in pressure values. 

The Bourdon tube, due to its C-shape, is particularly suitable for pressure measurement. It accurately responds to changes and ensures an accurate reading each time. In some cases, Bourdon tubes come in spiral or helical forms that prove useful in higher-pressure ranges.

Why the Bourdon Tube Pressure Gauges Are Reliable

There are several reasons why people consider Bourdon tube pressure gauge supplier to be reliable. Here are some of those reasons:

Simple and Robust Design

The Bourdon gauge contains no electrical parts; therefore, it has fewer parts that can break. The simple mechanical construction resists rough environments well, so it is a great choice for places where electronic gauges may not make the cut.

Precise Readings

Bourdon tubes deliver very precise pressure readings. Even a small pressure shift can impact safety or performance, such as in chemical plants or refineries, so precision is critical.

Resistant to Shock and Vibration

The Bourdon tube is very strong and can resist vibrations and shocks. Therefore, it can be depended on in high-pressure applications. Its accuracy is also not affected in machines with constant movements.

Suitable for Various Conditions

Bourdon gauges are quite versatile as they can function well in both low and high-pressure applications. The pressure that these gauges can handle ranges from thousands of pounds per square inch, which makes them versatile in a variety of applications.

Does Not Require Any External Power

This also comes with the advantage of a mechanical Bourdon tube, in which the device does not necessarily have a battery or any other source of power. For this reason, it works effectively in areas where batteries and power cannot be seen or in cases where power blacks out.

Uses of Bourdon Tube Pressure Gauges

Bourdon tubes apply in very many industries like diaphragm pressure gauges. Their mechanical structure and accuracy make the application versatile. Here’s their use in the following place.

Oil and Gas Industry

Pressure is constantly monitored to avoid any leaks or explosions within the oil and gas fields. Bourdon tube gauges are used in these facilities to ensure safety within the pipelines and refineries.

Water Treatment Plants

In water treatment, pressure control maintains efficient and safe operations. The proper operation of the system in water treatment is measured in pipes and tanks with a Bourdon gauge to maintain pressure.

Manufacturing Facilities

In the factory, machine pressure is usually very high. Bourdon gauges make it easy to monitor this pressure in order to prevent damage and ensure safe equipment usage.

Medical Apparatus

Some of the medical apparatus used in medical sectors, like oxygen cylinders or anesthesia apparatus, need highly accurate measurements of pressures in order to guarantee safe use by patients.

Heating, Ventilation and Cooling Systems

In HVAC systems, the pressure gauge measures the refrigerant level. Bourdon tube gauges keep such systems running efficiently and prevent malfunctions.

Types of Bourdon Tube Pressure Gauges

Bourdon gauges are made of different types. Each type is suite for a specific pressure range safety and application. Here are some common types:

C-Type Bourdon Tube Gauge

This is the standard form that works best for most of the medium-pressure applications. This uses a simple and curvaceous shape responding to moderate pressure variations.

Helical Bourdon Tube Gauge

The helical type is like the helical shape, which may work with much more increased pressure. This may operate under extremely high pressure, such as hydraulic working.

Spiral Bourdon Tube Gauge

The spiral type is almost like the helical gauge but applied to slightly lower pressures. Its design is useful where moderate to high pressures are encounter.

Duplex Bourdon Tube Gauge

This gauge employs two Bourdon tubes in one gauge, thereby measuring pressure at two places simultaneously. It is useful in systems where dual pressure readings are require.

Conclusion

In conclusion, Bourdon tube pressure gauges are dependable, inexpensive, and reliable. Bourdon tubes see the hardest service; it does not require electricity; and these measurement values can be seen as being satisfactory for matters of safety and efficiency in practice.

Universal application for anything from the oil and gas sector to healthcare speaks to value. Maintenance and calibration routine allows a Bourdon tube gauge to work dependently and is that reason as to why one can feel they can depend on their usage.

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