1. Through several years of experience in
Pressure Gauge verification and communication with users, it is found that many users reflect that their pressure gauges are not broken, but disassembled before submission for inspection or damaged during reassembly, that is, they are "broken". Therefore, as a more precise instrument, the
pressure gauge must consider its precautions in all aspects, such as installation, disassembly, transportation, reinstallation, etc. Installation after verification needs to take into account the tightness. Most users use raw tape to ensure the tightness. Some installers may have a relatively large amount of winding due to their strong hand; In consideration of the installation position, observation direction and other factors, some masters will also have differences... Therefore, it will appear that some pressure gauges are qualified during inspection, and it will be more troublesome to disassemble them after reinstallation, and some must borrow a wrench to screw them off; Some users will mistakenly think that the watch is broken because the air tightness cannot be reached after reinstallation, resulting in the immobility of the pointer; After several times of disassembly and installation, the thread buckle of some pressure gauges has been seriously damaged, resulting in failure to fit with relevant standards.
2. Because the pressure gauge is widely used, its measurement unit includes not only the commonly used MPa, kPa and PA in China, but also the commonly used units in foreign countries.
