Liquiphant FTL43

Summary

Product identification

• Product name: Liquiphant FTL43 HART
• Document number: TI01762F/00/EN/02.23-00
• Serial number: 71645386
• Date: 2023-09-25

Application

• Point level switch for all pumpable liquids, for minimum or maximum detection in vessels and piping.
• Suitable for hazardous areas.
• Can be used for leakage monitoring, pump dry-running protection, or overfill prevention.
• Ideal substitute for float switches, unaffected by flow, turbulence, air bubbles, foam, vibration, solids content, or buildup.
• Certified hygienic design (3-A, EHEDG, ASME BPE).
• Complies with material standards EC1935/2004, FDA, GB 4806, cGMP.
• Features Heartbeat Technology for predictive maintenance.
• Offers Bluetooth® wireless technology for commissioning, operation, and maintenance.
• Suitable for CIP and SIP (up to protection class IP69).

Operating limits

• Process temperature range: –40 to +150 °C (–40 to +302 °F)
• Process pressure range: Up to 64 bar (928 psi)
• Viscosity: Up to 10 000 mPa⋅s
• Thermal shock: ≤ 120 K/s
• Solids content: ⌀ ≤ 5 mm (0.2 in)
• Operating height: Up to 5 000 m (16 404 ft) above sea level
• Ambient temperature range: –40 to +85 °C (–40 to +185 °F). Permitted ambient temperature is reduced at higher process temperatures.

Feed water

• Density: Liquids with density > 0.4 g/cm³ (25.0 lb/ft³). Settings are available for > 0.7 g/cm³ and > 0.5 g/cm³.
• Pressure tightness: Up to vacuum.

Product water

• Output signal:
  • 4 to 20 mA with superimposed digital communication protocol HART, 2-wire.
  • 8/16 mA (SIO) with superimposed digital communication protocol HART, 2-wire.
  • Continuous operation: 4 to 20 mA proportional to oscillation frequency with HART.
  • Current output modes: 4.0 to 20.5 mA, NAMUR NE 43 (3.8 to 20.5 mA factory setting), US mode (3.9 to 20.5 mA).
• Signal on alarm (current output):
  • Max. alarm: settable from 21.5 to 23 mA.
  • Min. alarm: < 3.6 mA (factory setting).
• Damping: Factory setting 1 s (configurable from 0 to 999 s).
• Switch output: Preset switching delay times available, or user-configurable from 1 to 60 seconds independently for covered and uncovered states.

Electrical

• Power supply: 12 to 30 VDC on a direct current power unit.
• Power consumption:
  • Non-hazardous area: Max. current limited to 500 mA.
  • Hazardous area: Max. current restricted to Iᵢ = 100 mA by the transmitter power supply unit for intrinsically safe circuits (Ex ia).
• Overvoltage protection: Satisfies IEC/DIN EN 61326-1 (Table 2 Industrial environment). Test level for DC power supply lines and input/output lines: 1 000 V line to earth.
• Overvoltage protection category: II in accordance with IEC/DIN EN 61010-1.
• HART load: Min. 250 Ω.
• Protocol-specific data: Manufacturer ID: 17 (0x0011), Device type ID: 0x11DF, HART specification: 7.6.

Performance characteristics

• Reference operating conditions: As per IEC 62828-2, with ambient temperature +23 °C, process temperature +23 °C, water density 1 g/cm³, viscosity 1 mPa⋅s.
• Response time:
  • HART: acyclic min. 330 ms, typically 590 ms.
  • HART: Cyclic (burst) min. 160 ms, typically 350 ms.
  • Dynamic behavior (current output): Dead time (t₁) max. 3.5 ms, Time constant T₆₃ (t₂) max. 30 ms, Time constant T<0xE2><0x82><0x90> (t₃) max. 65 ms.
• Warm-up time (IEC 62828-4): ≤ 10 s.
• Resolution (current output): < 1 µA.
• Maximum measured error: Max. ± 1 mm (0.04 in) at switch point under reference conditions.
• Hysteresis: Typically 2.5 mm (0.1 in).
• Non-repeatability: 0.5 mm (0.02 in).
• Influence of process temperature: Switch point moves from +1.4 to –2.6 mm (+0.06 to –0.1 in) in the temperature range –50 to +150 °C.
• Influence of process pressure: Switch point moves from 0 to 2.6 mm (0 to 0.1 in) in the pressure range –1 to +64 bar.
• Influence of process medium density: Switch point deviation varies with density; see detailed charts.

Mechanical / hydraulic

• Materials in contact with process: 316L (1.4404 or 1.4435) for process connection and pipe extension; 316L (1.4435) for tuning fork. Delta-ferrite content ≤ 1% (≤ 3% for welds).
• Seals: EPDM (FDA, USP Class VI compliant) for Ingold fitting; Silicone for flush-mounted tank connection.
• Materials not in contact with process: Housing: 316L (1.4404); Display: Polycarbonate.
• Process connections: Flange (ASME B16.5, EN1092-1), Thread (ISO228), Ingold, Flush-mounted tank connection, DIN11851, DIN11864-1, DRD, SMS1145, Varivent, Clamp/Tri-Clamp.
• Dimensions: See detailed drawings in the PDF. Housing height approx. 95 mm (3.74 in). Probe length varies by design (Compact, Short tube, Pipe extension).
• Weight: Varies by component; Housing approx. 0.2 kg (0.44 lb).
• Surface roughness: Housing: Ra <1.6 µm; Process contact parts: Ra <1.5 µm. Optional: Ra <0.3 µm or Ra <0.38 µm for hygienic applications.

Environment

• Ambient temperature range: –40 to +85 °C (–40 to +185 °F).
• Storage temperature: –40 to +85 °C (–40 to +185 °F).
• Climate class: According to IEC 60068-2-38.
• Degree of protection: IP66/68/69, NEMA type 4X/6P (for mounted M12 cable).
• Pollution degree: 2 according to IEC/EN 61010-1.
• Vibration resistance: 1.25 (m/s²)²/Hz, ~5 g, for 5 to 2 000 Hz.
• Shock resistance: 30 g (18 ms) in all 3 axes.
• Electromagnetic compatibility (EMC): As per EN 61326 series and NAMUR recommendation EMC (NE21). Maximum deviation under disturbance: < 0.5%.

Disclaimer

This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror