Critical Technical Advantages
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High-Pressure Durability: The piezoresistive metallic sensor is designed for heavy-duty applications, capable of measuring ranges from vacuum up to 400 bar. This makes it the preferred choice for high-pressure hydraulic systems, steam applications, and gas distribution.
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Precise Temperature Compensation: The PMP51 provides highly accurate process values even when subjected to rapid changes in process temperature. This thermal stability is critical for outdoor installations or processes with fluctuating fluid temperatures.
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Safety and Integrity: The device is certified to SIL2 according to IEC 61508 and IEC 61511, making it a reliable component for safety instrumented systems (SIS). It also offers a “Platinum” accuracy grade of ±0.075% for high-precision requirements.
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Hygienic Excellence: For food and pharmaceutical applications, the PMP51 offers small, flush-mounted process connections. This design eliminates dead legs and ensures process safety during sterilization and cleaning cycles.
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Modular Data Handling: The modular concept allows for the easy replacement of the local display or electronics without removing the transmitter from the process. This “plug-and-play” capability reduces downtime and lowers total cost of ownership.
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Simplified Commissioning: Featuring menu-guided operation via the local display or digital protocols (HART, PROFIBUS PA, FOUNDATION Fieldbus), the transmitter can be set up quickly with adjustable measuring ranges to match specific process needs.
Technical Performance Matrix
| Feature | Details |
| Measuring Principle | Piezoresistive (Metallic diaphragm) |
| Measurement Type | Absolute or Gauge Pressure |
| Accuracy | ±0.1% (Standard) / ±0.075% (Platinum) |
| Measuring Range | -1/0 to +400 bar (-15/0 to +6,000 psi) |
| Process Temperature | -40 to +130°C (150°C for 1h for sterilization) |
| Housing Material | Aluminum or 316L Stainless Steel |
| Safety Rating | SIL2 / IEC 61508 |
Primary Applications
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High-Pressure Oil & Gas: Monitoring pressure in wellheads, pipelines, and gas compressors where pressures exceed 40 bar.
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Hygienic Level Measurement: Determining the volume or mass of ingredients in food or pharmaceutical tanks that require 150°C peak temperature resistance for SIP cycles.
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Steam and Boiler Control: Measuring pressure in steam headers and power plant utility lines.
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Hydraulic System Monitoring: Continuous tracking of high-pressure fluid power systems in industrial machinery.
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Chemical Processing: Measuring absolute and gauge pressure in reactors and distribution lines requiring SIL2 safety ratings.
