What is a pressure gauge? Structure and Function?

Structure of Pressure Gauge

• Ring : ring connected to Case
• Window: glass or plastic
• Gasket: this is a gasket between the case and the glass
• Point: clock hands
• Scale plate: surface displays pressure value
• Setscrew: screw tube connection
• Movement: transmission part
• Bourdon: pressure vessel
• Blowout disk: button to fill in oil
• Case: outer watch case

What is the function of the pressure gauge?

• Pressure gauges are commonly used in industry. It has the function of helping users measure pressure changes in the surrounding environment, thereby helping us control pressure much easier.
• In a watch there will be parts that come into contact with liquid. They are made of stainless steel so they are highly resistant to corrosion and rust in environments where chemicals are used.
• In addition, the meter is equipped with a blowout disc so the influence of temperature will not reduce the measurement quality and accuracy of the meter.
• When installing the meter directly into the pipeline, the flow pressure will affect the sensor system. This system will analyze and report on the display scales.
• There are cases when measuring pressure, we should choose a measuring pressure between 30 - 65%, then the accuracy or durability of the measuring device will be the highest.
• Most water pressure gauges are commonly used for hydraulic systems, water treatment plants, wastewater or gas systems...

Structural principle of pressure gauge

When looking for pressure measuring devices on the market, we will see many types of watches, diverse in structure and shape, and depending on the needs of use, there are many different types. . However, they still have common forms that we often use as follows: mechanical form and electronic form. Depending on the intended use, we can choose the most suitable one.

Mechanical pressure gauge

Structure: This type of pressure gauge has its main structure as a flat copper tube, bent like a question mark, in which one end is sealed, and the other end is connected to the fluid medium. The substance whose pressure needs to be measured (fluid can be liquid or gas). The sealed head is flexibly linked to one end of the gear pair. On the shaft of the remaining gear are mounted elastic springs and clock hands.

Operating principle: The needle rotates on a graduated watch face to display the value of pressure. When the watch operates, thanks to the pressure of the fluid acting on the copper tube, it causes the copper tube to contract and expand. This expansion will affect the gear mechanism in the watch, indirectly causing the watch hand to rotate - indicating the corresponding pressure value of the fluid. When the pressure of the fluid is not enough to expand the copper tube, the clock hand points to the "0" mark thanks to the elastic spring.

Electromagnetic pressure gauge

Structure: The sensor has a pressure membrane attached to the slider on the rheostat. The movement of the slider depends on the pressure applied to the membrane.

Operating principle: Thanks to the pressure of the fluid, the membrane will move up and down, moving the upper slider. The slider will move, changing the resistance in the circuit, thereby increasing or decreasing the current through the coil. Thanks to the change in current intensity, the magnetic field in the coil will also change accordingly. And continuing, because the clock hands are made from magnetized iron material, it will rotate under the influence of the electromagnetic force of the magnetic field generated by the coil. And finally, the clock hand rotates, we will read the value of the pressure on the value display.

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As an agent in Vietnam, Jade M-Tech Co., Ltd. will always have the benefits of an agent from Skon, we will always update customers with the most effective policies and information.

* Currently on the market there are many different brands of pneumatic equipment, but Skon is the dominant product manufactured in Taiwan using the most modern production technology, operating stably with outstanding durability and accuracy. dominant. Therefore, when you have a need for Skon products, please contact our company for advice and the best quote.