Calibration, Maintenance, and Repair of Pressure Gauges

The seemingly insignificant pressure gauge may not draw much attention, but improper daily use and maintenance can accumulate into a significant expense over a year, especially for large enterprises that use a substantial number of pressure gauges. Therefore, businesses should select the appropriate pressure gauges based on different circumstances. If the products produced are corrosive, corrosion-resistant pressure gauges should be chosen. If the working environment is highly vibratory, shock-resistant pressure gauges are recommended. When purchasing, opt for products from reputable manufacturers and pay attention to the type, measurement range, accuracy level, and installation method of the pressure gauge. For daily maintenance, follow these points: First, the gauge glass should be bright and clear, accurately displaying the pressure value. If the glass is broken or unclear, it should be removed, repaired, and calibrated before use. In our daily calibrations, we often encounter pressure gauges with blurry dials and oil stains, and our calibration staff must clean them before proceeding. Second, businesses should regularly check if the gauge pointer moves and fluctuates normally and ensure that the valve on the connecting pipe is fully open. Third, the connecting pipe of the pressure gauge should be periodically flushed to prevent blockages. Fourth, regular calibration is essential; pressure gauges in use should be calibrated every six months, or more frequently if usage is high, with the frequency agreed upon by the company and the metrology department. Only after calibration can they be installed and used; any gauges past their expiration should be immediately discontinued.