Pressure gauges are primarily divided into two types: mechanical and electronic. Let's first discuss the mechanical pressure gauges, which include Bourdon tube gauges, diaphragm gauge, differential pressure gauge, membrane gauge, diaphragm gauge, and more. In our practical work, Wuxi Quanjun Instrument Co., Ltd. typically needs to confirm the following parameters when selecting models:

Watch Diameter

The diameter of the dial is what we can generally consider to be the diameter of the pressure gauge's housing. Stainless steel shock-resistant gauges are commonly available in sizes of 50mm, 63mm, 100mm, and 150mm (as listed according to European standards; there may be slight variations in China and some other countries).

Pressure Gauge Manufacturer - Stainless Steel Vibration-Resistant Gauge - Diaphragm Pressure Gauge - Wuxi Quanjun Instrument Co., Ltd.

Outer Shell Material

The housing material for general pressure gauges typically includes ABS (engineering plastic), carbon steel, 304 stainless steel, and copper alloys. We select the housing material for the pressure gauge based on the specific environment. Generally, diaphragm pressure gauges use either ABS or 304 stainless steel.

III. Connection Methods

Pressure gauge connection methods are divided into axial (rear connection) and radial (bottom connection) types. However, in reality, customers can choose from various options based on specific situations. For panel installations, axial connections can be selected with a front flange or a rear fixed bracket, while radial connections can be chosen with a front flange or a rear fixed edge, etc.

Four: Measurement Medium

Pressure gauges typically come with only two standard liquid-connection materials: copper alloys and 304 stainless steel. If the medium you're measuring is not compatible with either of these or prone to corrosion, you can opt for a pressure gauge in conjunction with a chemical seal. The role of the chemical seal is to effectively prevent contact between the measuring medium and the measuring element without affecting the pressure measurement, thereby protecting the measuring element and extending its lifespan.

V. Liquid Filling

In environments with significant mechanical vibrations, we've found that many pressure gauge dials are filled with liquid. The primary purpose of this liquid is to increase resistance, effectively preventing the gauge needle from continuous vibration, allowing for accurate pressure readings. This is commonly used near pumps or in areas with intense vibrations.

Six: Medium Temperature

Generally, the measuring medium temperature for copper alloy measuring elements is +80 degrees, while for stainless steel, it is +200 degrees; however, if the pressure gauge you choose is a liquid-filled vibration-resistant gauge, the medium temperature can only reach +100 degrees. If the temperature is too high but still requires vibration resistance, the method we adopt is the condensation bend.

Seven: Measurement Range

Due to the pressure gauge displaying pressure values by measuring the deformation of components and driving the pointer's rotation through an amplification mechanism, it is crucial to select the appropriate measurement range. Generally, the ideal pressure for measurement is around 3/4 or 2/3 of the gauge's range. Choosing a larger range results in minimal pointer movement and inaccurate pressure readings. Conversely, selecting a smaller range may lead to the gauge being damaged due to overloading.

Section 8: Connection Dimensions

Due to varying bolt standards across different countries, the most commonly used ones include M (metric), G (British), NPT (American), and R (commonly used in Japan and South Korea).