Effect of buffer tube on pressure gauge

Buffer tube, also called bend or snake tube of pressure gauge, mainly has the function of reducing vibration and impact, and can also play a certain role in cooling the medium with higher temperature 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 medium temperature and corrosion. Usually, the medium is corrosive and equipped with a buffer tube. When the temperature of the medium is higher than 60℃, the buffer tube is equipped. If the pressure gauge is installed on a clean drinking water system, it is not necessary to add 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 medium with higher temperature to protect the pressure gauge and reduce the temperature influence error of the pressure gauge. The damping screw at the orifice of some pressure gauges plays a throttling and buffering role by reducing the flow area. It is mainly useful for medium pressure pulse.

Pressure gauge pointer bending

The pressure gauge has been used for a period of time, but the pressure is unstable, or the pressure gauge has been deleted. Sometimes we will find that the pointer of the pointer has become the shape of a machete. If you look carefully, it will leave a dent or depression on the "back", and the pointer is bent.

Bending the pressure gauge pointer of the pressure gauge, a relative inspection nail, is bent. This is because the pressure of the pressure gauge is too fast and too fast, which makes the pointer violent and repeatedly hits the nail plate for inspection. This is generally under the pointer of the pressure gauge, and the position of the pointer and the contact pin is checked. It can be seen that the trace of this part will leave a gap depth due to the influence of severe impact.

There is a relative pressure check dial "back" to the bent nail. This is because the pressure gauge is used, and the pressure is too large and too fast to affect the clockwise disc check valve of the pressure gauge pointer and the bending of the nails. The same will leave a gap on the upper side of the pressure gauge pointer.

The gauge pressure of the material is generally aluminum alloy plate. If the material of the pressure gauge pointer is too thin and too soft, the reason is that the pressure gauge pointer is also easy to bend.

What problems should be paid attention to when using digital pressure gauge?

The digital pressure gauge adopts liquid crystal display technology, which will reduce the service life of the LCD screen when it is used strongly, and may cause unclear data identification of the digital pressure gauge, so the location of the digital pressure gauge is installed to avoid glare. The manufacturer of the digital pressure gauge will not bear any responsibility for the consequences of the digital pressure gauge or the safety accident caused by strong light.

The liquid receiving part of the digital pressure gauge is made of stainless steel metal material and ceramic sensor, which can directly measure weak acid and alkaline medium. If the digital pressure gauge measures strong acid and alkaline medium, it should pay more attention to the selection, and mind using diaphragm digital pressure gauge.

Metal materials and ceramic sensors in the stainless steel liquid contact part of digital pressure gauge can directly measure weak alkaline medium. If the strong acidic medium measured by digital pressure gauge is selected, more attention should be paid to using diaphragm digital pressure gauge.

When the digital pressure gauge is used at low temperature (less than-30℃), it may cause the digital pressure gauge not to display, etc. When it is used at high temperature, a radiator should be added, otherwise the measurement accuracy of the digital pressure gauge cannot be guaranteed, and the lithium battery may explode at high temperature. Pay attention to the temperature of the digital pressure gauge during storage or transportation.

If the digital pressure gauge is used at low temperature (less than 30℃), it can make the digital pressure gauge fail to display. If it is used at high temperature over 85℃, a radiator should be added, otherwise the measurement accuracy of the digital pressure gauge cannot be guaranteed, and there is a danger of explosion of high-temperature lithium batteries. Attention should also be paid to the temperature of the digital pressure gauge during storage or transportation.

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