المزايا التقنية الحاسمة
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Superior Precision: The PMC71 offers a standard accuracy of ±0.05%, with a “Platinum” version reaching ±0.025%. This level of precision is essential for inventory control, custody transfer, and high-accuracy mass/volume calculations in tanks.
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Maximum Safety (SIL 2/3): Certified for use in safety instrumented systems up to SIL 3 (in redundant configurations), the PMC71 features a gastight feedthrough. This secondary containment ensures that even if the process breaks through the primary seal, the electronics and the environment remain protected.
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HistoROM Data Management: This innovative concept stores all device parameters and event logs on a removable memory module. It allows for effortless commissioning and maintenance; if a transmitter needs replacement, the configuration is simply swapped into the new unit without the need for re-parameterization.
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Advanced Ceramic Durability: The capacitive Ceraphire membrane is virtually immune to the effects of vacuum, which typically causes “oil-oil” or metallic diaphragms to fail. It also features integrated breakage detection, providing an immediate alarm if the sensor integrity is compromised.
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Dual-Chamber Housing: The two-chamber design separates the terminal compartment from the electronics compartment. This provides an additional layer of protection against moisture ingress and corrosive atmospheres during wiring or maintenance.
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Overload Resistance: The high-purity ceramic sensor can handle significant overpressure (overload) events without shifting its zero point or damaging the sensor structure, ensuring long-term measurement stability.
مصفوفة الأداء الفني
| ميزة | تفاصيل |
| مبدأ القياس | سيراميك سعوي (خالي من الزيت) |
| نوع القياس | الضغط المطلق أو الضغط المقياسي |
| دقة | ±0.05% (Standard) / ±0.025% (Platinum) |
| نطاق القياس | من -1/0 إلى +40 بار (من -15/0 إلى +600 رطل لكل بوصة مربعة) |
| درجة حرارة العملية | -40 to +150°C (-40 to +302°F) |
| تصنيف السلامة | SIL 2/3 (IEC 61508) |
| تواصل | هارت، بروفيبوس بنسلفانيا، مؤسسة فيلدباص |
التطبيقات الأساسية
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Critical Level Measurement: High-precision volume and mass measurement in large storage tanks for chemical and oil industries.
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Vacuum Distillation Columns: Reliable pressure monitoring in high-vacuum environments where metallic seals would fail.
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Hygienic Processing: Measuring pressure and level in pharmaceutical or food production lines requiring 150°C temperature stability for sterilization.
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Safety Instrumented Systems (SIS): Serving as the primary sensor for overfill prevention (WHG) and high-pressure safety trips.
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Corrosive/Abrasive Fluids: Handling aggressive chemical media (e.g., chlorine, acids) or slurries that would erode standard metallic sensors.
