Description
1. Capsule Pressure Gauge, Brass MT-P100BC – A Complete Technical Overview
A capsule pressure gauge, brass MT-P100BC is a precision instrument designed for measuring very low positive and negative pressures in both gaseous and clean air applications. It is particularly used when sensitive, stable, and accurate pressure indication is required. Unlike standard Bourdon tube gauges that are suited for medium to high pressures, a capsule pressure gauge works by using two thin soldered diaphragms that expand or contract with even minimal pressure variations. The brass capsule system provides durability and cost efficiency while delivering excellent sensitivity for low-pressure ranges.
The MT-P100BC model is engineered for applications such as HVAC systems, gas distribution lines, vacuum regulation, environmental testing equipment, burner control systems, and general process instrumentation.
2. Key Features of the MT-P100BC Capsule Pressure Gauge
The capsule pressure gauge, brass MT-P100BC offers multiple configuration options:
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Dial Sizes: 63DN, 100DN, 160DN
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Pressure Range: -600 mbar to +600 mbar
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Mounting: Direct pattern, bottom connection
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Process Connection: ½” NPT (M)
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Ingress Protection: IP54
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Execution: Dry (non-glycerin-filled)
These specifications support high readability, installation flexibility, and reliable long-term operation.
3. Operating Principle of Capsule Pressure Gauges
A capsule pressure gauge, brass MT-P100BC measures pressure through a corrugated capsule element made of two thin diaphragms welded together. When pressure is applied, the capsule expands or contracts. This movement is converted into a rotational motion through a mechanical linkage system, moving the pointer across the dial.
This system is ideal for low-pressure and vacuum measurement such as:
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Airflow monitoring
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Gas draft pressure
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Environmental simulation chambers
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Laboratory test systems
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Burner and boiler combustion pressure
4. Construction Materials and Design
The MT-P100BC design typically features:
| Component | Material | Reason |
|---|---|---|
| Capsule Element | Brass | High sensitivity & cost efficiency |
| Internal Mechanism | Brass/Alloy | Stable long-term operation |
| Case | Metal or Stainless Steel | Mechanical durability |
| Dial | High-contrast printing | Clear visibility |
Brass construction ensures compatibility with dry, clean, non-aggressive gases, making this gauge ideal for HVAC and laboratory uses.
5. Dial Size Options and Readability
The model is available in:
| Dial Size | Common Use |
|---|---|
| 63DN (2.5″) | Compact equipment and HVAC panels |
| 100DN (4″) | Industrial systems requiring clear readability |
| 160DN (6″) | Control rooms and long-distance monitoring |
Larger dials improve reading accuracy and reduce operator errors.
6. Pressure Ranges and Application Scope
The -600…+600 mbar measurement range supports both vacuum and slight positive pressure applications, including:
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Ventilation and air handling systems
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Gas distribution control
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Filter loading monitoring
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Environmental pressure simulation systems
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Burner and furnace draft measurement
⚠️ The gauge is recommended only for clean and dry gases, not liquids.
7. Mounting and Process Connection
The gauge features a bottom direct mounting pattern with ½” NPT (M) process connection, providing:
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Easy integration with gas regulators
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Compatibility with piping manifolds
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Convenient panel and control board installation
This configuration allows a straightforward and secure fit into most industrial setups.
8. Ingress Protection and Operational Execution
With IP54 ingress protection, the gauge is resistant to:
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Dust penetration at a moderate level
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Accidental water splashes
The dry execution ensures fast and responsive pointer movement, making it suitable for systems where quick indication is needed.
9. Advantages of Choosing MT-P100BC
Major Benefits:
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High measurement sensitivity for micro-pressures
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Cost-effective brass capsule design
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Clear and easy-to-read dial scale
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Standardized industry-compatible process connection
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Reliable performance for vacuum and low-pressure monitoring
This makes the MT-P100BC a dependable choice for HVAC engineers, laboratory technicians, and process control specialists.
10. Conclusion
The capsule pressure gauge, brass MT-P100BC is engineered to provide precise and stable measurement of low and vacuum pressure levels. Its brass capsule system, wide dial size options, direct bottom connection, and IP54 protection make it a versatile and dependable pressure measuring instrument.
Whether implemented in gas distribution systems, ventilation monitoring, laboratory settings, or combustion draft controls, the MT-P100BC delivers consistent performance and measurement reliability.
