The main structure of the precision pressure gauge and how to read the reading

Precision pressure gauges use elastic components as their sensitive components. They are instruments that measure and display high ambient pressure. The application is very common. It is used in almost all industrial processes and scientific research fields. It can be seen in the fields of heat pipe network, oil and gas transportation, water supply and gas supply system. Especially in industrial process control and technical measurement, mechanical pressure gauges are more and more widely used because the elastic sensitive elements of mechanical pressure gauges have very high mechanical strength and are easy to produce. So how do you read the pressure gauge?
The main structure of precision pressure gauge
　　 Overflow hole: In the event of an emergency when the Bourdon tube bursts, the internal pressure will be released to the outside through the overflow hole to prevent the glass panel from bursting. Note: In order to maintain the normal performance of the overflow hole, a space of at least 10mm should be left behind the table, and the overflow hole cannot be modified or plugged.
　　Pointer: In addition to the standard pointer, other pointers are also optional.
　　Glass panel: In addition to standard glass, other special materials such as tempered glass and non-reflective glass are also optional.
　　Performance classification: ordinary type (standard), steam type (M), heat-resistant type (H), vibration-resistant type (V), steam vibration-resistant type (MV) heat-resistant vibration-resistant type (HV).
　　 Treatment method: Oil-free/water-free treatment removes water or oil remaining in the wetted parts during manufacturing.
　　Outerwear designation: The color of the shell should be specified except the standard color
　　 Throttle valve (optional): In order to reduce the pulsating pressure, the throttle valve is installed at the pressure inlet.
How to read the reading of a precision pressure gauge
　　 First of all, you should know that the outer ring reading of the pressure gauge is red, corresponding to the red unit PSI; the inner ring reading is black, corresponding to the black unit MPa. When looking at the pressure gauge, the eyes should be aligned with the dial scale. The eyes, pointer and scale should be in a straight line perpendicular to the dial. After the pressure is stable, the reading should be read. Take the maximum and minimum values ​​of the pointer, and then take the arithmetic mean. You should also know that inHg is inches of mercury and bar is bar; MPa is megapascals, 1MPa=145psi; PSI is pounds, the pressure is easier to understand based on MPa, R and numbers are the code name of the refrigerant table; the pressure and temperature of the refrigerant pressure table There is a certain correspondence.
　　The above is the content about the reading of the pressure gauge and the main structure of the pressure gauge. The pressure gauge is actually a very common instrument. The pressure gauge is a very important component. With the pressure gauge, there is a safety guarantee. It is also our responsibility to pay attention to the pressure gauge from time to time.

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