Which parameters of the pressure gauge are used to confirm the function of the buffer tube
Commonly used shell materials are black shell and stainless steel. The black shell is made of iron and is equipped with black anti-corrosion coating. It is recommended for indoor general use and the price is relatively economic. Stainless steel is corrosion-resistant, acid-base, and can also slow down It is suitable for outdoor installation due to the aging of the sun and rain. Due to the properties of stainless steel and mechanical properties, it also has the ability to withstand high loads. The pressure gauge makes this series of pressure gauges meet the pressure measurement requirements of most petrochemical industry systems. , But it is not applicable to the pressure measurement of working fluid that is easy to crystallize or solidify.
The oil-filled pressure gauge is filled with glycerin in the pressure and used as a buffer during operation. The design feature of the oil-filled pressure gauge is that it is suitable for places where the hardware structure of the working system has vibration characteristics. The above-mentioned system vibration problem will cause excessive shaking of the pointer. , The pressure data is not easy to interpret, and the high-viscosity oil capsule pressure gauge filled in the pressure gauge has high damping characteristics, which can greatly reduce the wear of the internal gear and increase the service life.
Buffer tube is also called pressure gauge bend or serpentine tube, which mainly reduces vibration and impact. It can also dissipate heat to a higher temperature medium to protect the pressure gauge and reduce the temperature influence error of the pressure gauge.
Its main function is to protect the internal transmission mechanism of the meter from the damage of the medium temperature and the corrosiveness of the medium. Generally, the medium must be equipped with a buffer tube if the medium is corrosive. When the temperature of the shock-resistant pressure gauge is greater than 60 ℃, it must be equipped. Install a buffer tube, if the pressure gauge is installed on a clean drinking water system, there is no need to install it.
In addition, the buffer tube also has the function of reducing vibration and impact, and also has a certain heat dissipation effect on the higher temperature medium, so as to protect the pressure gauge and reduce the temperature influence error of the pressure gauge. The damping screw at the port of some pressure gauge joints is The throttling and buffering effect by reducing the flow area is mainly useful for the pressure pulse of the medium.
