المزايا التقنية الحاسمة
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Elite Accuracy: The PMD75 provides a standard reference accuracy of ±0.05%, with a “Platinum” option reaching ±0.035%. This high precision is vital for custody transfer, high-value mass flow, and inventory management where even small errors result in significant financial impact.
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Advanced Safety (SIL2/3): Designed according to IEC 61508, the PMD75 is suitable for SIL2 applications (or SIL3 in redundant configurations). Its gas-tight feedthrough adds an extra layer of safety, preventing process media from entering the electronics compartment.
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Extreme Overload Resistance: The sensor is engineered to withstand static pressures and overloads up to 420 bar (6,300 psi). This ensures the device remains functional and calibrated even after major process upsets or pressure spikes.
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HistoROM Data Management: The integrated HistoROM module automatically backs up all device parameters. If the electronics module needs replacement, the data is automatically uploaded to the new module, ensuring fast commissioning and zero data loss.
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Comprehensive Monitoring: The device features continuous function monitoring from the measuring cell to the electronics. This proactive diagnostics approach identifies potential issues before they lead to process downtime.
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Modular Construction: To minimize life-cycle costs, the sensor, display, and electronics are all independently replaceable. This modularity allows for targeted repairs and upgrades without replacing the entire instrument.
مصفوفة الأداء الفني
| ميزة | تفاصيل |
| مبدأ القياس | Differential Pressure (Piezoresistive) |
| نوع المستشعر | Welded Metallic Membrane |
| دقة | ±0.05% (Standard) / ±0.035% (Platinum) |
| نطاق القياس | 0.25 mbar to 40 bar (0.0036 to 600 psi) |
| Overload Resistance | Up to 420 bar (6,300 psi) |
| تصنيف السلامة | SIL2/3 (IEC 61508) / WHG Overfill Prevention |
| تواصل | هارت، بروفيبوس بنسلفانيا، مؤسسة فيلدباص |
التطبيقات الأساسية
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High-Precision Flow Measurement: Measuring volume or mass flow in gas and steam lines when paired with primary elements like orifice plates or Venturi tubes.
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Critical Level Monitoring: Measuring liquid levels in high-pressure reactors or storage tanks where SIL3 safety and WHG overfill prevention are required.
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Filter and Pump Safety: High-accuracy monitoring of pressure drops across critical filtration systems to protect downstream equipment.
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Custody Transfer Support: Providing the precise differential pressure data needed for energy and mass balance calculations.
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Marine and Offshore: Reliable performance in maritime environments for tank level and engine pressure monitoring, backed by marine-specific approvals.
