Liquiphant T FTL33

Summary

Product identification

• Product name: Liquiphant T FTL33
• Type: Point level switch for liquids in the food industry
• Measuring principle: Vibronic

Application

The Liquiphant FTL33 is a point level switch for universal use in all liquids, particularly suited for applications with stringent internal and external hygiene requirements, such as storage tanks, mixing vessels, and pipes. It is an alternative to float switches and other sensor types when conductivity, buildup, turbulence, flow, or air bubbles are issues.

Operating limits

• Process temperature:
  • Up to 100 °C (212 °F), suitable for CIP
  • Up to 150 °C (302 °F), suitable for CIP and SIP
• Process pressure range: Max. –1 to +40 bar (–14.5 to +580 psi)
• Ambient temperature range: –40 to +70 °C (–40 to +158 °F)
• Storage temperature: –40 to +85 °C (–40 to +185 °F)
• Altitude: Up to 2 000 m (6 600 ft) above sea level

Feed water characteristics

• Density: > 0.7 g/cm³ (optionally available: > 0.5 g/cm³)
• State of aggregation: Liquid
• Viscosity: 1 to 10 000 mPa·s, dynamic viscosity
• Solids contents: ø < 5 mm (0.2 in)
• Lateral loading capacity of the tuning fork: Maximum 200 N

Product water characteristics

The document does not specify "product water" characteristics as this is a level switch, not a water treatment device.

Electrical

• Supply voltage:
  • 3-wire DC-PNP: 10 to 30 V DC
  • 2-wire AC/DC: 20 to 253 VAC/DC
• Power consumption:
  • DC-PNP: < 975 mW
  • AC/DC: < 850 mW
• Current consumption:
  • DC-PNP: < 15 mA
  • AC/DC: < 3.8 mA
• Switch output:
  • 3-wire DC-PNP: Positive voltage signal (PNP), switching capacity 200 mA
  • 2-wire AC/DC: Load switching, switching capacity 250 mA
• Fuse: 500 mA slow-blow
• Reverse polarity protection: Integrated (3-wire DC-PNP), available (2-wire AC/DC)
• Short-circuit protection: Overload/short-circuit protection at I > 200 mA (3-wire DC-PNP); load check (2-wire AC/DC)

Mechanical / hydraulic

• Housing material: Stainless steel
• Process connection materials: 316L (1.4404/1.4435)
• Tuning fork material: 316L
• Degree of protection:
  • IP65/67 (M12 plug)
  • IP66/68/69 (M12 plug for metal housing cover)
  • IP65 (valve plug)
  • IP66/68 (cable)
• Weight:
  • Compact version with G ½" process adapter and valve plug (up to 100 °C): Approx. 140 g
  • Short tube version with G ½" process adapter and valve plug (up to 150 °C): Approx. 169 g
• Surface roughness: Ra ≤1.5 µm (EHEDG), Ra ≤0.76 µm (EHEDG, 3-A)

Features and Benefits

• 3-A and EHEDG certificates
• CIP and SIP cleanability up to 150 °C (302 °F)
• All-metal separation, no plastics in the process
• Robust stainless steel housing
• Optional M12x1 plug with IP69 degree of protection
• External function test with test magnet
• Onsite function check via LED indication
• Compact design for easy installation

Performance characteristics

• Switch point (vertical from above): 13 mm (0.51 in) ± 1 mm
• Hysteresis: Max. 3 mm (0.12 in)
• Non-repeatability: ±1 mm (0.04 in)
• Switching delay:
  • 0.5 s (tuning fork covered)
  • 1.0 s (tuning fork uncovered)
  • Optional: 0.2 s, 1.5 s or 5 s
• Switch-on delay: Max. 3 s
• Measuring frequency: Approx. 1100 Hz in air
• Influence of ambient temperature: Negligible
• Influence of medium temperature: –25 µm/°C
• Influence of medium pressure: –20 µm/bar

Certificates and Approvals

• CE mark
• EAC conformity
• RCM-Tick marking
• CSA C/US General Purpose
• 3-A Sanitary Standard No. 74-06
• EHEDG
• WHG approval for overfill protection
• CRN approval

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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