Liquiphant 31 - Liquid level switch
IOLINK



Point level switch for liquids

Liquiphant FTL31

from RM816.-
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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 DN50
    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 - 1/2 / 3/4; ASME MNPT / ISO / EN10226

    Product / VersionPrice / pcs. in MYROrder code
    Power Supply; OutputSensor TypeSensor Design1 to 34 to 1011+
    20-253VAC/DC; 2-wireCompact version 316L Ra<3.2um/126uinMax. process temperature 100oC/212oF906.-861.-816.- FTL31-AA1x2AAxxx
    Max. process temperature 150oC/302oF996.-946.-897.- FTL31-AA1x3AAxxx
    Short tube version 316L Ra<3.2um/126uinMax. process temperature 100oC/212oF974.-925.-877.- FTL31-AA1x2BAxxx
    Max. process temperature 150oC/302oF1,064.-1,011.-958.- FTL31-AA1x3BAxxx
    10-30VDC; 3-wire PNPCompact version 316L Ra<3.2um/126uinMax. process temperature 100oC/212oF906.-861.-816.- FTL31-AA4x2AAxxx
    Max. process temperature 150oC/302oF996.-946.-897.- FTL31-AA4x3AAxxx
    Short tube version 316L Ra<3.2um/126uinMax. process temperature 100oC/212oF974.-925.-877.- FTL31-AA4x2BAxxx
    Max. process temperature 150oC/302oF1,064.-1,011.-958.- FTL31-AA4x3BAxxx
    DC-PNP, IO-Link; 4-wireCompact version 316L Ra<3.2um/126uinMax. process temperature 100oC/212oF906.-861.-816.- FTL31-AA7M2AAxxx
    Max. process temperature 150oC/302oF996.-946.-897.- FTL31-AA7M3AAxxx
    Short tube version 316L Ra<3.2um/126uinMax. process temperature 100oC/212oF974.-925.-877.- FTL31-AA7M2BAxxx
    Max. process temperature 150oC/302oF1,064.-1,011.-958.- FTL31-AA7M3BAxxx

    Liquiphant FTL31 - 1" ASME MNPT / ISO / EN10226

    Product / VersionPrice / pcs. in MYROrder code
    Power Supply; OutputSensor TypeSensor Design1 to 34 to 1011+
    20-253VAC/DC; 2-wireCompact version 316L Ra<3.2um/126uinMax. process temperature 100oC/212oF963.-915.-867.- FTL31-AA1x2AAxxx
    Max. process temperature 150oC/302oF1,053.-1,000.-948.- FTL31-AA1x3AAxxx
    Short tube version 316L Ra<3.2um/126uinMax. process temperature 100oC/212oF1,031.-979.-928.- FTL31-AA1x2BAxxx
    Max. process temperature 150oC/302oF1,121.-1,065.-1,009.- FTL31-AA1x3BAxxx
    10-30VDC; 3-wire PNPCompact version 316L Ra<3.2um/126uinMax. process temperature 100oC/212oF963.-915.-867.- FTL31-AA4x2AAxxx
    Max. process temperature 150oC/302oF1,053.-1,000.-948.- FTL31-AA4x3AAxxx
    Short tube version 316L Ra<3.2um/126uinMax. process temperature 100oC/212oF1,031.-979.-928.- FTL31-AA4x2BAxxx
    Max. process temperature 150oC/302oF1,121.-1,065.-1,009.- FTL31-AA4x3BAxxx
    DC-PNP, IO-Link; 4-wireCompact version 316L Ra<3.2um/126uinMax. process temperature 100oC/212oF963.-915.-867.- FTL31-AA7M2AAxxx
    Max. process temperature 150oC/302oF1,053.-1,000.-948.- FTL31-AA7M3AAxxx
    Short tube version 316L Ra<3.2um/126uinMax. process temperature 100oC/212oF1,031.-979.-928.- FTL31-AA7M2BAxxx
    Max. process temperature 150oC/302oF1,121.-1,065.-1,009.- FTL31-AA7M3BAxxx

    Accessories

    Product / VersionPrice / pcs. in MYROrder code
    Cable 4x0.34, box M12,Cu Sn/Ni,90o,L=5m43.- 52010285
    Socket for plug 4p-125V, 4A-M1291.41 52006263
    Test magnet46.96 71267011

    Prices valid until 31.12.2019 in MYR per unit. See Endress+Hauser Terms and Conditions

    Is this Liquiphant level switch not the perfect match for your application?

  • 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, AC/DC or IO-Link 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
    IO-Link version
    Supply voltage 18 to 30 V DC, 4-wire
    Switching capacity 105 mA (2 × PNP), 200 mA (1 × PNP)
    Current consumption >15 mA
    Electrical connection M12 connector
    Output general
    Switching delay

    – 0.5 s when tuning fork is covered

    – 1.0 s when tuning fork is uncovered

    – IO-Link from 0.3 to 60 s

    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))

    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.

    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

     

    Pin 1 Supply voltage +
    Pin 2 1st switch output
    Pin 3 Supply voltage -
    Pin 4 IO-Link communication or 2nd switch output (SIO mode)

    Electronic version 2-wire AC/DC

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

    A) Valve plug

    B) Cable

     

    Pin 1 Supply voltage +
    Pin 2 1st switch output
    Pin 3 Supply voltage -
    Pin 4 IO-Link communication or 2nd switch output (SIO mode)
     

    IO-Link with one switch output

    IO-Link with one switch output FTL31

    Pin 1 Supply voltage +
    Pin 2 1st switch output
    Pin 3 Supply voltage -
    Pin 4 IO-Link communication or 2nd switch output (SIO mode)

    Terminal assignment

    Terminal assignment FTL31

    a) Minimum safety

    b) Connection for function monitoring using XOR operation

    c) Maximum safety

     

    Pin 1 Supply voltage +
    Pin 2 1st switch output
    Pin 3 Supply voltage -
    Pin 4 IO-Link communication or 2nd switch output (SIO mode)

  • More documents for FTL31
  • IO-Link

    Besides its general benefis, summarized below, using IO-Link point-to-point communication with our point level switch Liquiphant FTL31 allows:

    • Adjustment to densities less than 700 g/l
    • Media diffeentiation between two media (e.g. interface detection)
    • Second switch output (parallel switching)

     

    General benefits of IO-Link

    Digital measured values:

    • Faultless transmission (e.g. EMC caused)

    • No conversion, thus a higher total accuracy


    More data

    • Possibility to carry more values

    • Detailed fault information

    • Additional process information


    Central parameters storage

    • Possibility to load set up parameters from the master into a device

    • Configuration can be duplicated from one device to the next

    • Remote sensor maintenance

  • Previous model: FTL20

    Price / pcs. in MYR
    Liquiphant T FTL201 to 34 to 1011+Liquiphant FTL31
    FTL20-0010906.-861.-816.- FTL31-AA1U2AAWBJ
    FTL20-001B996.-946.-897.- FTL31-AA1U3AAWBJ
    FTL20-0020906.-861.-816.- FTL31-AA4U2AAWBJ
    FTL20-0025906.-861.-816.- FTL31-AA4M2AAWBJ
    FTL20-002B996.-946.-897.- FTL31-AA4U3AAWBJ
    FTL20-002D996.-946.-897.- FTL31-AA4M3AAWBJ
    FTL20-0110906.-861.-816.- FTL31-AA1U2AAW5J
    FTL20-011B996.-946.-897.- FTL31-AA1U3AAW5J
    FTL20-0120906.-861.-816.- FTL31-AA4U2AAW5J
    FTL20-0125906.-861.-816.- FTL31-AA4M2AAW5J
    FTL20-012B996.-946.-897.- FTL31-AA4U3AAW5J
    FTL20-012D996.-946.-897.- FTL31-AA4M3AAW5J
    FTL20-061B1,053.-1,000.-948.- FTL31-AA1U3AAWDJ
    FTL20-062B1,053.-1,000.-948.- FTL31-AA4U3AAWDJ