Pressure gauge care and maintenance requires a combination of daily operation and regular maintenance, specifically focusing on the following key points:
I. Daily Maintenance
Exterior Cleaning
Wipe the dial and case regularly with a soft cloth to remove dust and oil, ensuring clear visibility of the scale.
Connection Inspection
Before use or during inspections, check for loose pipe connections to prevent leaks or measurement errors.
Observing the Pointer
If the pointer jumps or becomes stuck during operation, immediately stop the unit and troubleshoot.
Environmental and Operating Specifications
Avoid severe vibration or impact, and operate valves slowly.
The recommended operating temperature is -25°C to 55°C. For corrosive environments, add an isolation device or select a corrosion-resistant model.
II. Regular Maintenance Measures
Zero Calibration
Check that the pointer is at zero when the unit is stopped. Adjust the deviation using the zero adjustment screw.
Accuracy Verification
Submit the gauge for periodic inspection by a professional institution, and verify the error range using a standard pressure source.
Internal Inspection
Inspect core components such as the spring tube and movement annually, and replace worn or corroded parts.
Seal Replacement
It is recommended to replace rubber seals annually to prevent leakage due to aging.
III. Precautions for Special Scenarios
Shock-resistant pressure gauges: Apply pressure slowly to prevent damage to the spring tube.
Capsule pressure gauges: Avoid using hard brushes or corrosive chemicals when cleaning. Store in a dust- and light-proof location.
Oil-immersed pressure gauges: If the gauge does not return to zero, check for deformation of the spring tube or deformation of the spring tube, or for internal obstruction.
These measures can extend the life of the pressure gauge and ensure measurement accuracy.
