Fire extinguishers are essential safety devices that can help prevent small fires from turning into large, destructive ones. They come in various types, sizes, and shapes, but they all have one thing in common: a pressure gauge. The pressure gauge is a critical component of a fire extinguisher as it indicates the amount of pressure inside the cylinder and whether the extinguisher is ready to use or needs to be recharged. In this blog post, we will explore how a fire extinguisher bourdon tube pressure gauge works.

What is a Bourdon Tube Pressure Gauge?

A bourdon tube pressure gauge is a mechanical device that measures the pressure of a fluid or gas. It consists of a curved tube that is closed at one end and connected to the pressure source at the other end. When the pressure inside the tube increases, the tube straightens out, and the movement is transmitted to a pointer on a dial, indicating the pressure reading.

Bourdon tube pressure gauges are widely used in various applications, including fire extinguishers, HVAC systems, and industrial processes. They are reliable, accurate, and require no external power source, making them ideal for use in harsh environments.

How Does a Fire Extinguisher Bourdon Tube Pressure Gauge Work?

A fire extinguisher bourdon tube pressure gauge is a specialized type of bourdon tube pressure gauge that is designed to measure the pressure inside a fire extinguisher cylinder. It is typically located on the top of the cylinder and consists of a dial, a pointer, and a bourdon tube.

The bourdon tube is made of a thin, curved metal tube that is closed at one end and connected to the fire extinguisher cylinder at the other end. The tube is designed to expand and contract in response to changes in pressure inside the cylinder. When the pressure inside the cylinder increases, the bourdon tube straightens out, and the movement is transmitted to the pointer on the dial, indicating the pressure reading.

The dial on the pressure gauge is calibrated in pounds per square inch (PSI) and typically ranges from 0 to 600 PSI. The pointer on the dial indicates the pressure reading, and a green zone on the dial indicates the safe operating range of the fire extinguisher. If the pointer is in the green zone, the fire extinguisher is ready to use. If the pointer is outside the green zone, the fire extinguisher needs to be recharged or replaced.

Advantages of Bourdon Tube Pressure Gauges

 Bourdon tube pressure gauges have several advantages over other types of pressure gauges, including:

1. Accuracy: Bourdon tube pressure gauges are highly accurate and can measure pressure changes as small as 0.1 PSI.

2. Reliability: Bourdon tube pressure gauges are reliable and require no external power source, making them ideal for use in harsh environments.

3. Durability: Bourdon tube pressure gauges are made of high-quality materials and can withstand high pressures and temperatures.

4. Cost-effectiveness: Bourdon tube pressure gauges are cost-effective and require minimal maintenance, making them a popular choice for many applications.

Conclusion

A fire extinguisher bourdon tube pressure gauge is a critical component of a fire extinguisher as it indicates the amount of pressure inside the cylinder and whether the extinguisher is ready to use or needs to be recharged. The bourdon tube pressure gauge is a reliable, accurate, and cost-effective device that is widely used in various applications, including fire extinguishers, HVAC systems, and industrial processes. Understanding how a fire extinguisher bourdon tube pressure gauge works can help you ensure that your fire extinguisher is always ready to use in case of an emergency.

Established since the year of 1985, Safestar Co., Ltd. has been dedicating in producing and researching the pressure gauges for fire extinguishers. Our products have got EN3-7 approval, Spanish AENOR certificate and UL approval. We are professional enough, welcome to contact us at any time.

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