Pressure gauges are common measuring instruments widely used in various production fields. The selection of pressure gauges should be based on usage requirements, and on the premise of meeting process technology requirements, comprehensive consideration should be given to the principles of economy and practicality to achieve a reasonable selection of accuracy level, range, type, and model. The accuracy of the indication is directly related to the safety of the user and the operating unit.
The following points should be noted during use:
1. An oxygen pressure gauge with an appropriate range must be selected. The normal working pressure should not exceed 75% of the highest value on the dial to avoid adverse consequences such as the pointer not returning to its original position or the rupture of the oxygen pressure gauge spring tube.
2. It is necessary to comply with the national requirements for the management of measuring instruments. The oxygen pressure gauge should strictly follow the regulations of regular calibration during use. To ensure the accuracy and safety performance of the oxygen pressure gauge, it is generally sent to the factory for calibration once every 3-6 months (depending on the accuracy level value). Only after passing the calibration can it be used. If the oxygen pressure gauge is severely affected by vibration or high temperature for some reason, it should be sent to the factory for calibration in a timely manner. When it is found during the use of an oxygen pressure gauge that there is no indication or only a small indication, there is pressure indication but the pointer jumps locally or lightly, the indication error is inconsistent, the pointer does not return to zero, or it cannot indicate to full scale, the fault must be identified through verification, and maintenance and verification must be carried out separately. Only after passing the verification can it be used.
3. Oxygen pressure gauges must be used correctly according to their intended use. The dial of the oxygen pressure gauge has the words "Oxygen" or "No Oil," and it is absolutely forbidden to touch it with grease during use. It is not allowed to use other pressure gauges instead of oxygen pressure gauges. When the oxygen pressure gauge is put into use, the door on the instrument base should be slowly opened to prevent sudden impact on the oxygen pressure gauge. When not in use, the valve should be tightly closed to prevent impurities such as dust and water vapor from entering the oxygen pressure gauge and corroding the spring tube. Regularly inspect the pressure pipelines, valves, joints, and welds for leaks. If any, it should be promptly eliminated. Conduct regular inspections at designated locations to check the integrity of the oxygen pressure gauge and maintain its cleanliness. When using an oxygen pressure gauge in situations with high vibration, a spring tube or soft shock absorber device should be installed.
4. The disassembly regulations for oxygen medical pressure gauges must be followed. When the oxygen pressure gauge malfunctions, it must not be disassembled, adjusted, or repaired at will, and it is strictly prohibited to put the faulty oxygen pressure gauge into operation. If any air leakage is found during work, it must be checked and eliminated before continuing work. The high-pressure part must be stopped and deflated before repair can be carried out. It should be emphasized that during calibration, all hazardous factors caused by the oxygen pressure gauge should be effectively excluded in order to truly ensure safe production and must not be used indiscriminately.
