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FAQ

What are the requirements of the gas pressure test for the pressure gauge?

The maximum pressure shall not exceed the upper limit of the pressure gauge, preferably at the 2/3 position, and the measurement accuracy is relatively high. If the production needs to be calibrated by the technical measurement Institute, the validity shall be used within the period of validity. The watch list is better. The dial is larger. It looks clearer.

Does the pressure meter belong to the field of mechanics?

The pressure gauge shall be attached to the measuring instruments. The question itself is not clear. Maybe you can answer that:1) the result of the pressure gauge test is pressure, which of course belongs to the basic quantity of mechanical research;2) no matter what type of pressure gauge, its working principle requires the knowledge of mechanics to explain clearly;3) the principles of the common pressure gauges (including vacuum meters) are usually described in the course of fluid mechanics or related mechanics.

What is the function of the pressure gauge bend?

The formal name of the table bend is called the buffer tube, which mainly has the function of reducing shock and shock. It can also play a certain role in heat dissipation of the medium with higher temperature, and protect the pressure gauge and reduce the temperature of the pressure gauge to affect the error. The damping screw at the orifice of the part of the pressure gauge has a throttling effect by reducing the flow area. Mainly useful for medium pressure pulses.

What are the common measuring ranges of pressure gauges?

0.25mp, 0.6mp, 1.0mp, 1.6mp, 2.0MP, 2.5MP and so on. In order to ensure that the elastic element can work reliably in the safety range of the elastic deformation, the pressure gauge range is selected not only according to the measured pressure, but also should consider the measured pressure change rate, the range need to leave enough room for. When measuring the steady pressure, the maximum working pressure shall not exceed 2/3 of the measuring range; the pulsating pressure shall be measured; the maximum working pressure shall not exceed 1/2 of the measuring range; when measuring the high pressure, the maximum working pressure shall not exceed the 3/5 of the measuring range. In order to ensure the accuracy of measurement, the minimum operating pressure should not be less than 1/3 of the measuring range. According to this principle, according to the measured maximum pressure to calculate a value, from the pressure gauge product catalog select a little larger than the measurement range.The pressure gauge is divided into vacuum meter, pressure vacuum meter, micro pressure meter, low pressure meter, middle pressure meter and high voltage meter according to its measuring range. Used to measure the atmospheric pressure is less than the pressure value of the vacuum gauge; pressure vacuum gauge used to measure the atmospheric pressure is larger than the pressure value; micro pressure gauge for measuring the pressure value is less than 60000 Pa; low voltage meter for measuring 0~6MPa value of pressure; pressure meter for measuring 10~60MPa value of pressure; pressure gauge for measuring the pressure value of more than 100MPa.

What is the thread diameter of the pressure gauge 10cm?

10CM is the surface diameter? For example, the standard interface should be M20*1.5, and the British G2/1'is equivalent to 4

If the plot pressure gauge 2.5MPA and the daily work range 1.23MPA-2.12MPA, what sort of pressure gauges should we choose?What are the methods of calculation?

China's general industrial pressure meter is divided into 4 accuracy levels, in line with the JJG52-1999 "Bourdon tube general pressure gauge, pressure vacuum table and vacuum meter" verification regulations, the pressure table prepared by the allowable error. These 4 levels of accuracy are: 1, 1.6, 2.5, and 4. Allowable error (calculated according to the percentage of the upper limit of measurement) is 1%, 1.6%, 2.5%, 4%, respectively.China 2005 new digital pressure meter verification regulations promulgated and implemented, in line with JJG875-2005 "digital pressure gauge verification regulations.". The accuracy of the pressure is respectively 0.01%, 1.6%, 0.02%, 0.05%, 0.1%, 0.2%, 0.5%, 1%, and so on.

The working principle of the Bourdon tube pressure gauge

Bourdon tube pressure gauge is spring tube pressure gauge.Its working principle is that:The pressure gauge through the sensitive element in the table (Bourdon tube, bellows, bellows) of the elastic deformation, then the conversion mechanism of table movement will transfer to the pointer pressure distortion caused by pointer rotation to show pressure.

What does the pressure gauge "radial back" and "axial front" mean? What's the side of the ordinary pressure gauge?

The radial pressure interface is parallel to the dial of the pressure gauge, i.e., the pressure port is below the dial,The axial pressure interface is parallel to the center axis of the dial of the pressure gauge, i.e., the pressure port is behind the dial,A pressure gauge is usually a flat cylinder,"With the front" means the mounting edge is in the front. After installation, the pressure surface is close to the instrument panel and embedded."Behind" refers to the mounting edge at the back. After installation, the pressure surface protrudes from the gauge gauge's thicknessRelated to stress