Capsule Pressure Gauges - Low Pressure Measurement

Comprehensive Guide to Capsule Pressure Gauges

Capsule Pressure Gauge Definition

A capsule pressure gauge is a precision measuring instrument specifically engineered for accurate low-pressure measurement applications. The capsule pressure gauge definition encompasses a sophisticated pressure sensing device that utilizes a flexible metallic capsule as the primary sensing element.

Capsule Pressure Gauge Working Principle

The capsule pressure gauge working principle operates through a sealed, corrugated metallic capsule that responds to pressure differentials. When pressure is applied, the capsule expands or contracts proportionally. This mechanical displacement is transmitted through a precision linkage system to rotate the pointer across a calibrated dial. The capsule's high surface area-to-volume ratio provides exceptional sensitivity for low-pressure measurements.

Technical Specifications & Range

Our capsule pressure gauge range encompasses:

  • Measurement ranges: 0-25 mbar to 0-2500 mbar
  • Accuracy classes: ±1.6%, ±2.5% of full scale
  • Operating temperature: -20°C to +60°C
  • Case materials: Stainless steel, brass, or phenolic resin
  • Connection sizes: 1/8", 1/4", 1/2" NPT or BSP threads

Capsule Pressure Gauge Applications

Critical capsule pressure gauge application areas include:

  • HVAC Systems: Draft measurement, filter monitoring, fan pressure control
  • Medical Equipment: Respiratory devices, anesthesia machines, incubators
  • Clean Room Technology: Differential pressure monitoring, contamination control
  • Gas Appliances: Burner pressure regulation, safety monitoring
  • Laboratory Applications: Vacuum systems, analytical instruments
  • Industrial Processes: Low-pressure gas distribution, pneumatic controls

Capsule Pressure Gauge Advantage and Disadvantages

Key Advantages:

  • Exceptional sensitivity for low-pressure measurements
  • No liquid filling required - suitable for gas applications
  • Wide temperature compensation capabilities
  • Minimal hysteresis and excellent repeatability
  • Resistant to vibration and shock
  • Long-term stability and reliability

Limitations to Consider:

  • Limited to low-pressure applications (typically under 2.5 bar)
  • Temperature sensitivity may affect accuracy
  • Higher initial cost compared to diaphragm gauges
  • Requires careful handling due to delicate capsule construction

Technical Documentation

Each instrument includes comprehensive technical documentation featuring detailed capsule pressure gauge diagram illustrations and precision capsule pressure gauge drawing specifications. These technical resources provide essential information for proper installation, calibration, and maintenance procedures.

Our engineering team provides complete technical support including custom capsule pressure gauge diagram development for specialized applications and detailed capsule pressure gauge drawing modifications to meet specific project requirements.