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Detection Technology
Vibrating Fork Principle
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Key Characteristics
Reliable point level monitoring with fail-safe design
Top hat rail mounting configuration
Compatible with FTL80/81/85 product line
Continuous self-monitoring via LIVE-Signal technology -
Safety Rating
SIL 3 compliant according to IEC61508
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Electrical Requirements
85 – 253 VAC/DC
20 – 30 VAC/20-60VDC -
Temperature Range
–20 to +60 °C
(–4 to +140 °F) -
Output Configuration
2x SPST safety relays for level monitoring
1x SPST status relay
1X SPDT fault alert relay -
Approvals
ATEX, FM, CSA, CSA C/US, IEC Ex, NEPSI
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Safety Compliance
WHG-certified overfill prevention
Leakage detection functionality -
Marine Approvals
GL/ ABS/ LR/ BV/ DNV
Application Details
The Nivotester FTL825 supplies power to Liquiphant FailSafe FTL8x point level switches via a two-wire connection while tracking their 4-20mA current output. It produces isolated switching signals between input, output and power circuits, achieving SIL3 safety compliance. Perfect for installations where redundant systems are either impractical or not permitted.
Fail-safe point level detector designed for top hat rail installation.
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Operational temperature: -20 to +60°C (-4 to +140°F)
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Global hazardous area certifications with WHG-compliant spill prevention
Key Benefits
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SIL3 certification meeting IEC 61508 Ed.2.0 /IEC 61511-1 / ISA 84-1 requirements
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Extended 12-year proof test interval with push-button slave testing capability
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Ideal for SIL3 applications in chemical processing, petrochemical and oil & gas sectors
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Optimal choice when redundancy isn’t feasible or when longer test intervals are desired
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Integrated latching (self-holding) feature
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Four programmable outputs: 2 safety relays (quiescent current mode), 1 status relay, and 1 fault relay (changeover type)
