Critical Technical Advantages
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Elite Accuracy and Stability: The FMB70 provides a standard accuracy of ±0.1%, with a “Platinum” option reaching ±0.075%. This performance is backed by active temperature compensation, ensuring minimal drift even in processes with fluctuating thermal conditions, which is essential for precise batch-to-batch repeatability.
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Condensate-Resistant Contite Cell: The hermetically sealed Contite cell is uniquely designed to be impervious to humidity and condensation. This is a critical advantage in “cold” applications (e.g., chilled water or dairy) where moisture ingress often causes standard sensors to fail or drift.
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High-Level Safety (SIL3): Designed according to IEC 61508, the FMB70 is suitable for use in SIL3 safety systems (in redundant configurations). This makes it a preferred choice for high-integrity overfill prevention and safety-critical process monitoring.
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HistoROM/M-DAT Data Module: This integrated module acts as the “brain” of the device, backing up all instrument settings and measured values. It allows for fast commissioning and simplifies maintenance by enabling “plug-and-play” electronics replacement without data loss.
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Two-Chamber Housing: The separate terminal and electronics compartments provide an extra layer of protection. This design prevents moisture or contaminants from entering the sensitive electronics area during field wiring or maintenance.
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Comprehensive Self-Monitoring: The device is function-monitored from the measuring cell all the way to the electronics. This continuous self-diagnosis ensures that any internal anomalies are detected immediately, maintaining process safety and reliability.
Technical Performance Matrix
| Feature | Details |
| Measuring Principle | Hydrostatic (Contite cell) |
| Measurement Type | Level and/or Pressure |
| Accuracy | ±0.1% (Standard) / ±0.075% (Platinum) |
| Measuring Range | 0.1 to 10 bar rel. (1.5 to 150 psi) |
| Process Temperature | -10 to +100°C (135°C for 30 min max) |
| Safety Rating | SIL3 (IEC 61508) |
| Housing Material | Two-chamber Aluminum or 316L Stainless Steel |
Primary Applications
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High-Precision Hygienic Level: Monitoring the mass or volume of ingredients in pharmaceutical or food tanks requiring 3-A or EHEDG compliance.
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Safety-Critical Chemical Storage: Level measurement in hazardous liquid tanks where SIL3 reliability and WHG overfill prevention are mandated.
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Marine and Offshore: Monitoring fuel or cargo tanks on ships where marine-certified, high-accuracy sensors are required.
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Batching Processes: Applications requiring the highest repeatability between production runs to ensure consistent product quality.
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Condensate-Heavy Environments: Level monitoring in cooling circuits or humid processing areas where standard hydrostatic sensors struggle with moisture.
