Technical Specifications
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Temperature operating limits
-50 °C to +150 °C
(-58 °F to +302 °F) -
Pressure operating range / peak overpressure
Vacuum to 100 bar
Vacuum to 1450 psi -
Minimum fluid density
0.5 g/cm³
(Optional 0.4 g/cm³ version available)
Industrial Applications
The Liquiphant FTL51B is purpose-built for industrial environments and certified for direct integration into SIL2/SIL3 safety circuits. Its intelligent wizard simplifies periodic safety verification (SIL/WHG compliance) while automatically generating test documentation. The device maintains measurement stability despite challenging conditions including fluctuating media properties, flow variations, turbulence, gas entrainment, foam, mechanical vibration, or surface buildup. Featuring digital communication capabilities and user-friendly operation, it offers instant visibility into live process parameters.
Liquid level monitoring with extension tube configuration
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Mounting variants: Threaded, flanged, and hygienic Tri-Clamp connections
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Thermal operating range: -50°C to +150°C (-58°F to +302°F)
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Pressure tolerance: -1 to +100 bar (-14.5 to +1450 psi)
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Material construction: 316L stainless steel, Alloy variants
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Compliance certifications: International explosion-proof, WHG spill prevention, SIL functional safety, marine approvals
Key Benefits
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Reliable detection using proven vibronic measurement principle
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IEC 61508 compliant architecture for safety-critical installations – SIL2/3 certified
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Simplified verification via SmartBlue-App, external test button, or magnetic activation. Digital interface supports efficient safety validation
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Heartbeat Technology enables continuous diagnostics and non-intrusive verification
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Centralized monitoring through digital communication for real-time device data access
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Enhanced environmental protection features



