The answer is undoubtedly the Bourdon tube pressure gauge (Bourdon Tube Pressure Gauge). From home pumps to large oil refineries, you can find these analog pointer meters everywhere. It has a share of 80-90% of the general pressure measurement market. The key reason why it is the first choice is that it finds a perfect balance between low cost, high durability and sufficient accuracy, especially suitable for measuring fluids that do not clog, such as water, oil and compressed air. As long as your working conditions do not involve highly corrosive chemicals or viscous mud, then choosing a standard Bourdon tube pressure gauge is almost certainly the most correct and prudent decision.

Why The Bourdon Tube Pressure Gauge Dominates The Market

The reason is actually very simple, just two words: mechanical and reliable. This thing is a purely mechanical device. Its working principle has not changed much in more than a century: the core is 1 bent metal tube (that is, the ‘C-tube’), which straightens out slightly when internal pressure acts. This tiny deformation directly drives the hands on the dial to rotate through a set of mechanical linkages. The biggest advantage of this “analog pointer“ design is that it is completely independent of power and can be read at any time. Frankly, this reliability is critical for industries ranging from refineries to ordinary civilian pipelines.

Cost, Durability, And Accuracy

The primary reason this pressure gauge is the “go-to choice” for engineers and technicians is the balance it strikes between three critical factors:

Low cost: Its mechanical structure is much simpler to manufacture than those complex electronic transmitters, so it has always been the most cost-effective solution in standard pressure monitoring applications.
High durability: this kind of instrument is designed for industrial environment, very durable. It has good tolerance to vibration and pulsation, especially when the case is filled with liquid (such as glycerin or silicone oil), it can play a good buffer effect, even if it is installed on heavy machinery, the service life is also very good.
Adequate accuracy: Digital-level accuracy may be required in the laboratory, but in most industrial and commercial applications, the accuracy provided by the Bunden tube (usually between ± 1% and ± 2% of the range) is sufficient. It is more than enough to monitor the outlet pressure of the pump, the compressor pipeline or the hydraulic system.

Ideal Applications Of Bourdon Tube Pressure Gauges

Compressed air (pneumatic system): In almost every auto repair shop or manufacturing shop, the air compressor is equipped with a Bourdon tube pressure gauge. It can safely cope with rapid pressure changes in the pneumatic system.
Water system: From domestic water pumps to municipal water treatment, clean water is the ideal medium for this pressure gauge because it can flow smoothly into the Bourdon tube without causing blockage.
Oil (hydraulic system): Hydraulic machinery relies on oil to transmit power. Bourdon tube pressure gauges are the general standard here because they can withstand the high pressures commonly found in hydraulic lines without failing.

When To Use It (And When Not To)

Bordon tubes are designed for relatively clean, non-corrosive fluids.

Safe usage: If the medium is water, oil, or air, then the Bourdon tube pressure gauge is the right choice.
Dangerous usage: If you have “thick mud“ in your application, it will block the Borden tube and cause the entire meter to fail. Similarly, if it is “highly corrosive chemicals“, they will attack the metal pipe wall (usually brass or stainless steel), eventually causing leakage or even rupture. This point in the selection must be paid special attention to, otherwise the consequences may be very serious.

All in all, for the vast majority of pressure measurement tasks that do not involve extreme viscosity or strong corrosion, Bourdon tube pressure gauges are still the undisputed industry standard.

Author：Felix

Hi, I’m a Senior Instrumentation Specialist with over 19 years of experience in industrial process control. I specialize in pressure measurement solutions, helping engineers and buyers select the safest, most durable gauges for their specific applications. I hope to turn complex technical data into clear, practical advice.