Description
1. Overview of the Differential Pressure Gauge MT-P100DP
The Differential Pressure Gauge MT-P100DP is a precision-engineered diaphragm-type pressure measurement instrument designed to monitor and indicate the difference between two separate pressure points within industrial processes. Differential pressure gauges are essential in applications where the pressure difference, rather than the absolute pressure, determines operational performance and system safety.
The MT-P100DP model is widely used in filtration systems, pump performance monitoring, burner controls, airflow measurement systems, HVAC air handling units, cleanroom pressure balancing, and industrial gas flow control. The diaphragm sensing mechanism ensures high sensitivity, repeatability, and stability even in low-pressure differential measurements. The robust design, reliable movement, and clear dial indication make this gauge suitable for continuous monitoring environments.
2. Key Technical Features
The Differential Pressure Gauge MT-P100DP includes the following specifications:
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Dial Size Options: DN100 and DN160
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Measuring Range: 0…60 mbar up to 40 bar differential
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Mounting Pattern: Direct mounting with bottom connection
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Process Connection: Two ½” NPT (M) ports with 54mm center-to-center spacing
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Ingress Protection Rating: IP65
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Execution Variants:
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Dry execution
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Dry but fillable version (for liquid damping if needed)
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This configuration allows flexible use across low, medium, and high-pressure range systems, providing precise monitoring for pressure imbalance, blockage, or flow performance changes.
3. Working Principle of the Diaphragm Differential Pressure Gauge
The Differential Pressure Gauge MT-P100DP operates based on a diaphragm sensing system, where the diaphragm separates the high-pressure side from the low-pressure side. When pressure differs between the two input ports, the diaphragm deflects proportionally to the pressure difference. This deflection is transmitted through a mechanical linkage to the movement mechanism, which drives the pointer to display the differential pressure on the scale.
This principle offers several performance advantages:
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High sensitivity to small pressure variations
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Stable readings even under pulsating or fluctuating pressures
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Minimal hysteresis and drift over time
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Ability to withstand pressure shocks when one side is momentarily pressurized
This makes the MT-P100DP particularly effective in dynamic system environments.
4. Construction and Material Durability
The construction of the Differential Pressure Gauge MT-P100DP ensures reliability in demanding industrial environments:
| Component | Material / Design Purpose |
|---|---|
| Diaphragm | Industrial-grade stainless steel or alloy for long-term fatigue strength |
| Housing / Case | Corrosion-resistant stainless steel for protection against chemicals and moisture |
| Movement Mechanism | Precision-engineered gear and linkage system for stable pointer motion |
| Dial & Pointer | High-contrast printed scale for clear visual indication |
This rugged build allows the gauge to perform reliably in environments exposed to mechanical vibrations, temperature variations, and airborne particles.
5. Dial Size and Visibility
The gauge is available in two dial diameters:
| Dial Size | Application Suitability |
|---|---|
| DN100 (4″) | Suitable for compact machinery panels, equipment enclosures, and localized inspection areas |
| DN160 (6″) | Ideal for control rooms, monitoring stations, and environments requiring long-distance readability |
Larger dials improve visibility, especially in industrial or low-light environments.
6. Pressure Range Capabilities and Application Fields
The Differential Pressure Gauge MT-P100DP covers a wide range from 0…60 mbar up to 40 bar, making it suitable for both low-pressure and medium/ high-pressure differential measurement:
Applications Include:
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Monitoring pressure drop across filters in HVAC and gas systems
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Evaluating pump inlet vs. outlet pressure to assess pump efficiency
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Measuring airflow differential in cleanrooms and sterile environments
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Detecting burner or boiler draft pressure
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Ensuring balanced airflow in ventilation systems
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Monitoring pressure differences in chemical and water treatment filters
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Supervising pressure conditions in industrial gas pipelines
This wide applicability makes the MT-P100DP a universal solution across industrial pressure monitoring tasks.
7. Mounting and Process Connection Configuration
The Direct, bottom connection mounting pattern simplifies integration into existing or newly designed piping layouts. The standardized ½” NPT (M) dual connections provide a secure and industry-compatible interface.
The 54mm center-to-center spacing ensures compatibility with differential pressure manifolds, transmitter adapters, and filter housings.
This design allows:
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Smooth installation
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Simplified servicing and recalibration
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Compatibility with common industrial standards
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Accurate pressure isolation and relief routing
8. Ingress Protection and Operational Environment Suitability
With an IP65 protection rating, the Differential Pressure Gauge MT-P100DP provides resistance against:
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Dust infiltration
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Water spray or condensation exposure
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Industrial airborne contaminants
This enables deployment in indoor and outdoor industrial environments, including:
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Mechanical rooms
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Processing plants
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HVAC air handling units
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Chemical handling areas (with correct diaphragm material selection)
The dry execution variant provides fast response, while the dry but fillable design allows the gauge to be filled later with glycerin for vibration damping if installed near pumps or vibrating machinery.
9. Benefits of Choosing the MT-P100DP
Key advantages of the MT-P100DP include:
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Accurate measurement of differential pressure rather than system-wide pressure
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Clear and stable pointer reading
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Rugged diaphragm design for industrial reliability
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Wide measurement range options for multiple applications
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Easy installation and maintenance
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Protection suitable for harsh environments
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Adaptable to vibration conditions when filled with damping liquid
Engineers value this model for its combination of precision, durability, and versatility.
10. Conclusion
The Differential Pressure Gauge MT-P100DP is a robust and highly accurate diaphragm-based differential pressure indicator designed for industrial applications where monitoring pressure variation is critical. With dial size options, a broad measurement range, direct mounting, dual ½” NPT process connections, and IP65 protection, it offers dependable performance in fluid, air, and gas systems.
Whether used for filtration monitoring, airflow regulation, pump performance evaluation, or industrial process control, the MT-P100DP ensures reliable measurement, operational safety, and efficiency enhancement.
