Pressure gauge use and maintenance
Note on the use of pressure gauge:
1. The meter must be vertical: a 17mm wrench should be used for tightening during installation, and the watch case should not be twisted strongly; collision should be avoided during transportation;
2. The meter should be used in the surrounding environment with a temperature of -25~55℃;
3. Use the working environment vibration frequency <25HZ, the amplitude is not greater than 1mm;
4. Because the ambient temperature is too high during use, the indicator value of the meter does not return to zero or the indication value is out of tolerance. The upper sealing rubber plug of the watch case can be cut to make the inner cavity of the meter open to the atmosphere;
5. The use range of the instrument should be between 1/3 and 2/3 of the upper limit;
6. Isolation devices should be added when measuring corrosive media, media that may crystallize, and media with high viscosity;
7. The meter should be verified frequently (at least once every three months), and if a fault is found, it should be repaired in time;
8. If the instrument is found to be invalid or damaged due to poor manufacturing quality within half a year from the date of delivery, the company is responsible for repair or replacement;
9. For instruments that measure corrosive media, the requirements should be indicated when ordering.