How to Select the Right Pressure Gauge: Key Parameters to Consider

A pressure gauge, commonly referred to as a spring tube pressure gauge or analog pressure gauge, consists of a measuring system made up of a connection, a spring tube, and a transmission mechanism. When the measured pressure changes, the free end of the spring tube moves, and the corresponding pressure value is indicated on the dial. The pointer shows the pressure reading by pointing to the corresponding scale. Pressure gauges are typically used to measure the working pressure of liquids, steam, gas, or other media in closed systems.

When selecting a pressure gauge, it is important to take into account various factors such as the application environment, readability, medium characteristics, and installation method.

Below are the key parameters to consider:

1. Measuring Medium – Name, Operating Temperature, and Characteristics
Clearly identify the medium to be measured, along with its temperature and any special properties (e.g., corrosivity, viscosity, or presence of particulates).

2. Dial Diameter
The choice of dial size depends not only on readability from a distance and ease of observation but also on whether the installation location can accommodate the selected size.

3. Pressure Range
The range should be selected based on actual working pressure and safety requirements. Typically, the full-scale range should be 1.5 to 2 times the normal working pressure.

4. Body Material Selection
Select the appropriate gauge material according to the properties of the measured medium and the conditions of the installation environment.

5. Installation Type and Dimensions
Consider the mounting method and connection dimensions to ensure proper installation,e.g Diaphragm pressure gaue.

6. Dial and Connection Orientation
Choose from the following configurations depending on application needs: Radial, radial with flange, axial without flange, or axial with flange.

7. Functional Requirements
Determine whether additional functions are needed, such as control capabilities, remote transmission, vibration resistance, etc.

By carefully evaluating these parameters, you can select a pressure gauge that ensures accurate measurement, operational safety, and long-term reliability in your specific application.