Do I need to check the accuracy of the pressure gauge for air filter combination?

Checking the accuracy of the air filter combination pressure gauge is a good maintenance practice, especially in applications that require accurate monitoring of system pressure. Although the pressure gauge in air filter combinations is usually calibrated during manufacturing, the accuracy of the pressure gauge may be affected over time and use.
The following are the general steps to check the accuracy of the air filter combination pressure gauge:
Comparing pressure gauge readings: Use a standard pressure gauge or pressure gauge with known accuracy, connect it to the same pressure source (such as a gas source or gas pressure vessel), and compare it with the pressure gauge in the air filter combination.
Calibration: If there is a significant difference between the pressure displayed on the pressure gauge in the air filter combination and the pressure displayed on the standard pressure gauge, calibration may be necessary. Calibration usually requires professional instruments and skills, which can be carried out by equipment maintenance professionals or qualified institutions.
Adjustment or replacement: If the accuracy of the pressure gauge cannot be adjusted or repaired, it may be necessary to consider replacing it with a new pressure gauge. Ensure the selection of pressure gauges with appropriate specifications and accuracy levels, and install and calibrate them according to the manufacturer's guidelines.
Regular inspection: It is recommended to regularly check the accuracy of the pressure gauge in the air filter combination, especially in critical applications. The frequency depends on the usage conditions and requirements of the system, and generally speaking, checking once a year is a reasonable suggestion.
By ensuring the accuracy of the pressure gauge in the air filter combination, system operation can be ensured within a safe and reliable pressure range, thereby reducing potential risks and problems caused by inaccurate pressure.