explosion proof intelligent vacuum gauge maintenance
Explosion proof intelligent vacuum gauge, also known as vacuum gauge, is an instrument for measuring vacuum or air pressure. It is widely used in scientific research and industrial production to measure the pressure by using the change of some physical effect of gas under different pressure. In pressure measurement, except for a few direct measurements, most of them are indirect measurements. It is to cause a certain physical phenomenon in the measured gas, and then measure the physical quantity related to the pressure in the process, and then try to determine the pressure value. This will also cause some problems with vacuum measurement.
The relationship between any specific physical phenomenon and pressure is significant only within a certain pressure range. Beyond this range, the relationship becomes weak. Therefore, any method has a certain measurement range, which is the "range" of the explosion-proof intelligent vacuum gauge.
explosion proof intelligent vacuum gauge maintenance :
1. When transporting and using the explosion-proof intelligent vacuum gauge, it must be strictly prevented from being upside down and lying down, so as to prevent the silver from falling back into the vacuum tube or the mercury bead entering the middle closed tube capillary to block the capillary tube and affect the measurement accuracy. Therefore, the vacuum rubber tube of explosion-proof intelligent vacuum gauge must be vertical before each use, so that mercury can flow back into the glass tube of vacuum gauge.
2. When measuring, the explosion-proof intelligent vacuum gauge is in the upright state. It is strictly forbidden to rush any gas into the vacuum system to avoid impacting the glass tube and breaking the glass tube.
3. The working mercury in the explosion-proof intelligent vacuum gauge has been treated by chemical and physical methods, and has certain cleanliness. Mercury oxidation pollution caused by long-term use and other reasons will directly affect the measurement accuracy, so it should be sent to repair in time, and can be used after passing the inspection.
4. After the measurement of the explosion-proof intelligent vacuum gauge is finished, the vacuum rubber tube is clamped with a clamp, which is used to isolate the gas from the vacuum system. In this way, the mercury in the explosion-proof intelligent vacuum gauge can be kept clean, and the strong impact of the atmosphere on the explosion-proof intelligent vacuum gauge will be avoided when the explosion-proof intelligent vacuum gauge is removed and separated. If the vacuum gauge is not removed, after the mechanical vacuum pump stops, the mechanical pump must be disconnected from the air circuit of the vacuum system, and the mechanical pump shall be put into the atmosphere to avoid the mechanical pump oil returning into the vacuum system and the vacuum gauge being polluted by oil.