The differences between oil-filled shock-proof pressure gauges and stainless steel pressure gauges
I. Main Functions and Application Scenarios
1. Oil-Filled Shockproof Pressure Gauge (Filled with Oil Anti-Vibration Gauge)
Core Function: In environments with intense vibration or pulsating media, it stabilizes the pointer display, reduces mechanical wear, and enhances the service life and reading accuracy of the instrument.
Typical Scenarios:
Air Compressor/Refrigeration Compressor: Absorbing exhaust pressure pulsations.
Hydraulic System (Construction Machinery, Injection Molding Machines): Buffering hydraulic shocks and pump vibrations.
Ship Engine Set: Resisting continuous low-frequency vibrations.
Oil Drilling Platform: Withstanding high-frequency vibrations during equipment operation.
2. Stainless Steel Pressure Gauge
Core Function: Providing reliable pressure monitoring in corrosive environments, ensuring the long-term stable operation of the instrument.
Typical Scenarios:
Chemical/Pharmaceutical Industry: Contacting corrosive media such as acids, bases, and organic solvents.
Food and Beverage Processing: High hygiene requirements, commonly using 316L stainless steel.
Ocean Platforms/Coastal Facilities: Resisting salt fog corrosion.
Water Treatment System: Monitoring pipeline pressure in systems containing chlorine ions or sewage.
II. Selection Suggestions
Preferred for Oil-Filled Shockproof Pressure Gauge:
Significant vibration of equipment (such as diesel engines, pump sets), or frequent pressure fluctuations (pulsation > 10% of the range).
Scenarios requiring extended instrument lifespan and reduced maintenance frequency.
Preferred for Stainless Steel Pressure Gauge:
Media with corrosiveness (such as chlorine gas, hydrochloric acid, salt water).
Damp environments, high salt fog (coastal, electroplating workshop).
High hygiene or cleanliness requirements (food, biological engineering).
Special Requirements Combination:
If both corrosion resistance and anti-vibration are needed, a stainless steel oil-filled shockproof pressure gauge (such as 316L housing + silicone oil design) can be selected.
Attention is needed for high-precision applications (such as 0.5% FS or above) regarding the slight impact on sensitivity due to oil filling.
III. Precautions
Maintenance of Oil-Filled Gauges:
Avoid direct exposure to sunlight or extreme low temperatures to prevent the damping liquid from deteriorating or solidifying.
When installing, keep it vertical; tilting may form bubbles that affect the damping effect.
Limitations of Stainless Steel Gauges:
Ordinary stainless steel (such as 304) has limited corrosion resistance to some strong acids (hydrochloric acid, sulfuric acid); choose the appropriate grade based on the medium.
Long-term use in vibration environments may require adding buffer tubes or soft connections.
