Liquiphant FTL31 - Liquid level switch



Point level switch for liquids

Liquiphant FTL31 [replaces FTL20 and FTL260]

from €121.-
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    • Robust stainless steel housing (316L)

    • External function test with test magnet

    • Onsite function check possible thanks to LED display

     

    Specs at a glance

    Function Point level switch
    Product Liquids
    Mounting Vessels and pipes from DN25
    Product density >0.7 g/cm³ (>0.5 g/cm³ as option)
    Product temperature –40...+100 °C (–40 to +212 °F)/ +150 °C (+302 °F)
    Product viscosity ≤10 000 mm2/s (cSt)
    Process pressure Max. 40 bar (580 psi)

    Liquiphant FTL31 - 20...253 VAC / DC

    Product / VersionPrice / pcs. in EUROrder code
    Sensor TypeTemperaturProcess Connection1 to 34 to 1011+
    Compact version 316L Ra<3.2um/126uinMax . 100°CThread ISO228 G1/2, 316L147,-133,-121,- FTL31-AA1x2AAWBJ
    Thread ISO228 G3/4, 316L147,-133,-121,- FTL31-AA1x2AAWCJ
    Thread ISO228 G3/4, 316L, install > accessory weld-in adapter147,-133,-121,- FTL31-AA1x2AAW5J
    Thread ISO228 G1, 316L157,-141,-128,- FTL31-AA1x2AAWDJ
    Thread ISO228 G1, 316L, install > accessory weld-in adapter158,-143,-130,- FTL31-AA1x2AAWSJ
    Max. 150°CThread ISO228 G1/2, 316L162,-146,-133,- FTL31-AA1x3AAWBJ
    Thread ISO228 G3/4, 316L162,-146,-133,- FTL31-AA1x3AAWCJ
    Thread ISO228 G3/4, 316L, install > accessory weld-in adapter162,-146,-133,- FTL31-AA1x3AAW5J
    Thread ISO228 G1, 316L171,-154,-140,- FTL31-AA1x3AAWDJ
    Thread ISO228 G1, 316L, install > accessory weld-in adapter173,-156,-142,- FTL31-AA1x3AAWSJ
    Short tube version 316L Ra<3.2um/126uinMax . 100°CThread ISO228 G1/2, 316L158,-142,-130,- FTL31-AA1x2BAWBJ
    Thread ISO228 G3/4, 316L158,-142,-130,- FTL31-AA1x2BAWCJ
    Thread ISO228 G1, 316L168,-151,-137,- FTL31-AA1x2BAWDJ
    Thread ISO228 G1, 316L, install > accessory weld-in adapter169,-152,-139,- FTL31-AA1x2BAWSJ
    Max. 150°CThread ISO228 G1/2, 316L173,-156,-142,- FTL31-AA1x3BAWBJ
    Thread ISO228 G3/4, 316L173,-156,-142,- FTL31-AA1x3BAWCJ
    Thread ISO228 G1, 316L182,-164,-149,- FTL31-AA1x3BAWDJ
    Thread ISO228 G1, 316L, install > accessory weld-in adapter184,-166,-151,- FTL31-AA1x3BAWSJ

    Liquiphant FTL31 - 10…30 V DC

    Product / VersionPrice / pcs. in EUROrder code
    Sensor TypeTemperaturProcess Connection1 to 34 to 1011+
    Compact version 316L Ra<3.2um/126uinMax . 100°CThread ISO228 G1/2, 316L147,-133,-121,- FTL31-AA4x2AAWBJ
    Thread ISO228 G3/4, 316L147,-133,-121,- FTL31-AA4x2AAWCJ
    Thread ISO228 G3/4, 316L, install > accessory weld-in adapter147,-133,-121,- FTL31-AA4x2AAW5J
    Thread ISO228 G1, 316L157,-141,-128,- FTL31-AA4x2AAWDJ
    Thread ISO228 G1, 316L, install > accessory weld-in adapter158,-143,-130,- FTL31-AA4x2AAWSJ
    Max. 150°CThread ISO228 G1/2, 316L162,-146,-133,- FTL31-AA4x3AAWBJ
    Thread ISO228 G3/4, 316L162,-146,-133,- FTL31-AA4x3AAWCJ
    Thread ISO228 G3/4, 316L, install > accessory weld-in adapter162,-146,-133,- FTL31-AA4x3AAW5J
    Thread ISO228 G1, 316L171,-154,-140,- FTL31-AA4x3AAWDJ
    Thread ISO228 G1, 316L, install > accessory weld-in adapter173,-156,-142,- FTL31-AA4x3AAWSJ
    Short tube version 316L Ra<3.2um/126uinMax . 100°CThread ISO228 G1/2, 316L158,-142,-130,- FTL31-AA4x2BAWBJ
    Thread ISO228 G3/4, 316L158,-142,-130,- FTL31-AA4x2BAWCJ
    Thread ISO228 G1, 316L168,-151,-137,- FTL31-AA4x2BAWDJ
    Thread ISO228 G1, 316L, install > accessory weld-in adapter169,-152,-139,- FTL31-AA4x2BAWSJ
    Max. 150°CThread ISO228 G1/2, 316L173,-156,-142,- FTL31-AA4x3BAWBJ
    Thread ISO228 G3/4, 316L173,-156,-142,- FTL31-AA4x3BAWCJ
    Thread ISO228 G1, 316L182,-164,-149,- FTL31-AA4x3BAWDJ
    Thread ISO228 G1, 316L, install > accessory weld-in adapter184,-166,-151,- FTL31-AA4x3BAWSJ

    Accessories

    Product / VersionPrice / pcs. in EUROrder code
    Weld-in adapter G3/4 d=50, 316L Flush mount process connection. For vessel-mounting. Material: 316L. Seal: silicone O-ring. FDA, EHEDG, 3-A compliant. Usage: FTL20/FTL20H, FTL31/FTL33, FTW23, FTW33, FMI51, FTI51. Usage: TMR35.21,75 71258355
    Weld-in adapter G3/4, d=29, 316L Flush mount process connection. For pipe-mounting. Material: 316L. Seal: silicone O-ring. FDA, EHEDG compliant. Usage: FTL20/FTL20H, FTL31/FTL33, FTW23, FTW33.21,75 71258357
    Weld-in adapter G1, d=60, 316L Flush mount process connection. Material: 316L. Seal: silicone O-ring. FDA, EHEDG, 3-A compliant. Usage: FMI51/FMI52, FTI51/FTI52, FTL20/FTL20H, FTL31/FTL33, FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL80/FTL81, FTL260, FTW23, FTW33, PMP23, PMP51, PMP135, PTP33B/PTP35. Usage: TM401/TM411, TMR35.30,95 52001051
    Weld-in adapter G1, d=53, 316L Flush mount process connection. Material: 316L. Seal: silicone O-ring. FDA, EHEDG, 3-A compliant. Usage: FMI51/FMI52, FTI51/FTI52, FTL20H, FTL31/FTL33, FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL80/FTL81, FTL260, FTL330H/FTL330L, FTW23, FTW33, PMP135, PTP35.30,95 71258358
    Cable 4x0.34, box M12,Cu Sn/Ni,90o,L=5m M12 plug connector. 5m cable PVC, Cu Sn/Ni lock. Usage: FMB50/FMB51/FMB52/FMB53, FTL31/FTL33, FTW23, FTW33, PMC11, PMC21, PMC51, PMP11, PMP21/PMP23, PMP51/PMP55, PTC31B, PTP31B/PTP33B.6,82 52010285
    Socket for plug 4p-125V, 4A-M12 M12 socket for plug. Self confectionery connection. Usage: plug M12.14,99 52006263
    Test magnet6,82 71267011

    Prices valid until 30.11.2017 in EUR per unit (not including shipping and applicable sales tax). See
    Endress+Hauser Terms and Conditions

  • Application

    The Liquiphant FTL31 is a point level switch for liquids and is used in tanks, vessels and pipes. It is used for overfill prevention or pump protection in cleaning and filter systems as well as in cooling and lubrication vessels, for instance. Ideal for applications in which float switches or conductive, capacitance and optical sensors have been used up to now. The Liquiphant FTL31 also works in areas where these measuring principles are not suitable due to conductivity, buildup, turbulence, flow conditions or air bubbles.

    Function

    A piezoelectric drive causes the tuning fork of the liquid level switch Liquiphant FTL31 to vibrate at its resonance frequency. When the tuning fork is immersed in a liquid, its intrinsic frequency changes due to the change in density of the surrounding medium. The electronics system in the point level switch monitors the resonance frequency and indicates whether the tuning fork is vibrating in air or is covered by liquid. A signal is output via the DC-PNP or AC/DC electrical connection.

    Application Example

    Point Level switch for liquids Liquiphant FTL31 - Installation example

    The point level switch can be installed in any position in a vessel, pipe or tank, e.g., as overfill prevention or upper level detection (1), lower level detection (2) or dry running protection for pump (3)

  • Technical Data

    DC-PNP version
    Supply voltage 10 to 30 V DC, 3-wire
    Switching capacity 200 mA
    Current consumption <15 mA
    Electrical connection M12 connector, valve plug, cable
    AC/DC-version
    Supply voltage 20 to 253 V AC/DC, 2-wire
    Switching capacity 250 mA
    Current consumption <3.8 mA (in cut-off torque <1 mA for 100 ms)
    Electrical connection Valve plug, cable
    Output general
    Switching delay

    0.5 s when tuning fork is covered

    1.0 s when tuning fork is uncovered

    Hysteresis max. 3 mm (0.12 in)
    Process connections

    Thread ISO 228 G½"; G¾"; G1";

    Thread ISO 228 G¾" and G1" for flushmounted installation in weld-in adapter;

    Thread ASME MNPT ½"; ¾"; 1";

    EN10226 R½"; R¾"; R1"

    Operating conditions
    Orientation As required
    Switch point

    Vertical installation: 13 mm (0.51 in) ±1 mm

    horizontal installation: 10.5 mm (0.4) (water +25 °C (+77 °F), 1 bar (14.5 psi))

    Pipe extension 103 mm (4.05)
    Surface roughness Metallic surface in contact with process: Ra ≤ 3.2 μm (126 μin)
    Ambient temperature –40 to +70 °C (–40 to +158 °F)
    Process temperature

    –40 to +100 °C (–40 to +212 °F),

    optionally to 150 °C (to +302 °F)

    Process pressure –1 to +40 bar (–14.5 to +580 psi)
    Storage temperature –40 to +85 °C (–40 to +185 °F)
    Climate class DIN EN 60068-2-38/IEC 68-2-38: test Z/AD
    Density >0.7 g/cm³ (optionally available: >0.5 g/cm³)
    Viscosity 1 to 10 000 mPa·s, dynamic viscosity
    Degree of protection

    IP65/67 NEMA Type 4X Enclosure (M12 connector);

    IP65 NEMA Type 4X Enclosure (valve plug);
    IP66/68 NEMA Type 4X/6P Enclosure (cable)

    Electromagnetic compatibility Electromagnetic compatibility in accordance with all relevant requirements of the EN 61326 series and NAMUR recommendation EMC (NE21). For details, refer to the EC Declaration of Conformity.
    Approvals
    WHG approval Overfill detection system: Z-65.11-531
    Leak detection system: Z-65.40-532

    Dimensions in mm (inches)

    Compact version 

    Liquiphant 31 - Liquid level switch - Dimensions of the compact version

    a) Thread ISO 228 G½"; G¾"

    b) Thread ISO 228 G1"

     

    * Dimension for process temperature max. 100 °C (212 °F)

    ** Dimension for process temperature max. 150 °C (302 °F)

    Installation according to instruction manual

    Short tube version

    Liquiphant 31 - Liquid level switch - Dimensions of the short tube version

    a) Thread ISO 228 G½"; G¾"

    b) Thread ISO 228 G1"

     

    * Dimension for process temperature max. 100 °C (212 °F)

    ** Dimension for process temperature max. 150 °C (302 °F)

    Installation according to instruction manual

    Electrical connection

    Electronic version 3-wire DC PNP

    Point Level switch for liquids Liquiphant FTL31 - Wiring the 3 wire version

    A) M12 connector

    B) Valve plug

    C) Cable

    Electronic version 2-wire AC/DC

    Point Level switch for liquids Liquiphant FTL31 - Wiring the 2 wire version

    A) Valve plug

    B) Cable
     

  • More documents for FTL31
  • Price / pcs. in EUR
    Liquiphant T FTL201 to 34 to 1011+Liquiphant FTL31
    FTL20-0010147,-133,-121,- FTL31-AA1U2AAWBJ
    FTL20-001B162,-146,-133,- FTL31-AA1U3AAWBJ
    FTL20-0020147,-133,-121,- FTL31-AA4U2AAWBJ
    FTL20-0025147,-133,-121,- FTL31-AA4M2AAWBJ
    FTL20-002B162,-146,-133,- FTL31-AA4U3AAWBJ
    FTL20-002D162,-146,-133,- FTL31-AA4M3AAWBJ
    FTL20-0110147,-133,-121,- FTL31-AA1U2AAW5J
    FTL20-011B162,-146,-133,- FTL31-AA1U3AAW5J
    FTL20-0120147,-133,-121,- FTL31-AA4U2AAW5J
    FTL20-0125147,-133,-121,- FTL31-AA4M2AAW5J
    FTL20-012B162,-146,-133,- FTL31-AA4U3AAW5J
    FTL20-012D162,-146,-133,- FTL31-AA4M3AAW5J
    FTL20-061B171,-154,-140,- FTL31-AA1U3AAWDJ
    FTL20-062B171,-154,-140,- FTL31-AA4U3AAWDJ
    FTL20-062D171,-154,-140,- FTL31-AA4M3AAWDJ
    Price / pcs. in EUR
    Liquiphant T FTL2601 to 34 to 1011+Liquiphant FTL31
    FTL260-0010Max. process temperature 100oC/212oF
    169,-152,-139,- FTL31-AA1U2BAWSJ
    Max. process temperature 150oC/302oF
    184,-166,-151,- FTL31-AA1U3BAWSJ
    FTL260-0020Max. process temperature 100oC/212oF
    169,-152,-139,- FTL31-AA4U2BAWSJ
    Max. process temperature 150oC/302oF
    184,-166,-151,- FTL31-AA4U3BAWSJ
    FTL260-1010Max. process temperature 100oC/212oF
    169,-152,-139,- FTL31-AA1U2BAWSJ
    Max. process temperature 150oC/302oF
    184,-166,-151,- FTL31-AA1U3BAWSJ
    FTL260-1020Max. process temperature 100oC/212oF
    169,-152,-139,- FTL31-AA4U2BAWSJ
    Max. process temperature 150oC/302oF
    184,-166,-151,- FTL31-AA4U3BAWSJ