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Vibronic
Point level switch
Liquiphant FTL71

Liquiphant FTL71 ©Endress+Hauser

Vibronic measuring principle

Liquiphant with permanent function check is the safe choice for point level detection in liquids

  • Liquiphant FTL71

Point level switch with extension tube for liquids in high-temperature applications

Liquiphant FTL71 is a point level switch with extension tube for use in hazardous areas with all international certificates. FTL71 is especially designed for applications with high process temperatures up to 280°C and can be used up to SIL2, in homogeneous redundancy up to SIL3. An integrated second line of defense offers the highest degree of safety. Reliable measurement values, not affected by: changing media properties, flow, turbulences, gas bubbles, foam, vibrations or build-up.

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Variable

  • Specs at a glance

    • Process temperature

      -60 °C...+280 °C
      (-76 °F...+540 °F)
      (300°C / 572°F, 50h cumulated)

    • Process pressure absolute / max. overpressure limit

      Vacuum...100 bar
      (Vacuum...1450 bar)

    • Min. density of medium

      0.5g/cm³ (0.4g/cm³ optional)

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Additional components

  • Benefits

    • Use in safety systems requiring functional safety to SIL2 in accordance with
      IEC 61508/IEC 61511-1

    • With welded gas-tight feed-through maximum safety in the event of damaged sensor

    • Wide variety of electronics, e.g. NAMUR, relay, thyristor, PFM signal...

  • Field of application

    Point level switch for all liquids.

    • Process connections: Threads and flanges

    • Temperature: -60 to +280°C (-76 to +540°F)

    • Pressure: -1 to +100bar (-14.5 to +1,450psi)

    • Sensor material: 316L, Alloy (PFA and Enamel on request)

    • International explosion...

Features and specifications

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Details

  • Measuring principle

    Vibration Liquids

  • Characteristic / Application

    Modular housing concept
    High process temperatures up to 280°C
    wide range of process connections
    Analogue and bus interfaces
    Extensive certificate range (e.g. Ex,WHG)
    compact, e.g. pipes
    Dual Sealing / Second line of defense

  • Specialities

    Foam detection
    Detect a density change
    second line of defense

  • Supply / Communication

    PROFIBUS PA
    19...253V AC
    10...55V DC-PNP
    19...253V AC bzw 10...55V DC
    8/16mA, 11...36V DC
    NAMUR
    PFM

  • Ambient temperature

    -50 °C...+70 °C
    (-58 °F...+158 °F)

  • Process temperature

    -60 °C...+280 °C
    (-76 °F...+540 °F)
    (300°C / 572°F, 50h cumulated)

  • Process pressure absolute / max. overpressure limit

    Vacuum...100 bar
    (Vacuum...1450 bar)

  • Min. density of medium

    0.5g/cm³ (0.4g/cm³ optional)

  • Main wetted parts

    316L / Alloy
    PFA and Enamel on request

  • Process connection

    Thread:

    G3/4A, G1A, R3/4", R1, NPT3/4, NPT1

    Flange:

    DIN DN25...DN100,

    ASME 1"...4",

    JIS 25A...100A

  • Sensor length

    Length 130mm (5.12") (Liquiphant II)
    148mm...3000mm / 6000mm optional
    (5.83"...118" / 236" optional)

  • Communication

    PROFIBUS PA
    19...253V AC
    10...55V DC-PNP
    19...253V AC bzw 10...55V DC
    8/16mA, 11...36V DC
    NAMUR
    PFM

  • Certificates / Approvals

    ATEX, FM, CSA C/US, IEC Ex, TIIS, INMETRO, NEPSI

  • Safety approvals

    SIL

  • Design approvals

    EN 10204-3.1

    NACE MR0175, MR0103

    ASME B31.3

    AD2000

  • Marine approval

    GL/ ABS

  • Options

    Heavy duty stainless steel housing mainly for the oil and gas industry

  • Components

    FTL325P/FTL375P Interface PFM
    FTL325N/FTL375N Interface NAMUR

Documents / Manuals / Software

Accessories / Spare parts

Nr
Order code
Specification
  • 20
    • Nr 20 Order code 52002698

      Cover F13 Ex Alu, gasket

      O-ring EPDM. Usage: housing F13, aluminium, Ex d.

    • Nr 20 Order code 52002699

      Cover F17 Alu, gasket

      O-ring EPDM. Usage: housing F17, aluminium.

    • Nr 20 Order code 52006903

      Cover T13 Alu, gasket EPDM

      O-ring EPDM. Usage: housing T13, aluminium.

    • Nr 20 Order code 52025606

      Cover F16 grey, PBTP, gasket

      Gasket EPDM. Usage: housing F16 Polyester, FMI21, FMI51/FMI52, FMU30, FTI51/FTI52/ FTI55/FTI56, FTI77, FTL50/FTL51/FTL51C/ FTL51H, FTL70/FTL71, FTL80/FTL81/FTL85, FTW31/FTW32.

    • Nr 20 Order code 52025790

      Cover F16 transparent, gasket

      Gasket EPDM. Usage: housing F16 Polyester.

    • Nr 20 Order code 71114754

      Cover F27 316L, gasket EPDM

      Material: 316L. O-ring 70.0x3.0 EPDM. Usage: stainless steel housing F27, FTL50/FTL51/FTL51C, FTL70/FTL71, FTL80/FTL81/FTL85.

  • 12
    • Nr 12 Order code 52004236

      Adapter set housing/electronics FTL5x/7x

      Fixing set, consists of: Securing ring 301. Adapter ring PPA. Usage: Liquiphant M/S.

  • 21
    • Nr 21 Order code 52004137

      O-ring 71.0x3.55 EPDM, 5 pieces

      Usage: cover, housing F16, Polyester.

    • Nr 21 Order code 52004277

      Sealing set EPDM,cover F13/17/18/27,10pc

      Consists of: 10x O-ring 70.0x3.0 EPDM.

    • Nr 21 Order code 52008495

      Sealing set EPDM 73.0x3.0, 10 pieces

      Usage: cover.

    • Nr 21 Order code 71114756

      Sealing set FVQM, cover F27, 3 pc.

      Consists of: 3x O-ring 70.0x3.0 FVQM. Usage: FTL50/FTL51/FTL51C, FTL70/FTL71, FTL80/FTL81/FTL85.

  • 25
    • Nr 25 Order code 52007103

      Cover T13 "Terminal" Alu, gasket EPDM

      O-ring EPDM. Usage: terminal compartment, housing T13, aluminium.

  • 30
    • Nr 30 Order code 52002304

      Electronics FEL51 19-253VAC

      Level switch 2-wire. Hardware version 01.00. Software version 01.00.01. Usage: FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71.

    • Nr 30 Order code 52002305

      Electronics FEL52 10-55VDC-PNP

      Level switch 3-wire. Hardware version 01.00. Software version 01.00.01. Usage: FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71.

    • Nr 30 Order code 52002306

      Electronics FEL54 relays DPDT

      19-253VAC/19-55VDC. Hardware version 01.00. Software version 01.00.01. Usage: FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71.

    • Nr 30 Order code 52002307

      Electronics FEL55 11-36VDC

      Level switch 2-wire 4-20mA. Hardware version 01.00. Software version 01.00.01. Usage: FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71.

    • Nr 30 Order code 52002308

      Electronics FEL56 NAMUR

      Level switch 2-wire. Hardware version 01.01. Software version 01.00.01. Usage: FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71.

    • Nr 30 Order code 52002309

      Electronics FEL57 PFM

      Level switch 2-wire. Hardware version 01.01. Software version 01.00.01. Usage: FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71.

    • Nr 30 Order code 52006454

      Electronics FEL58 NAMUR

      Level switch 2-wire + push button. Hardware version 01.02. Software version 01.00.01. Usage: Liquiphant M/S (HT).

    • Nr 30 Order code 71074953

      Electronics FEL50A,PA,HW02.00,SW01.03.00

      PROFIBUS PA. Hardware version 02.00. Software version 01.03.00. Current consumption: 12.5mA+/-1.0mA. Usage: FTL50/FTL50H/ FTL51/FTL51C/FTL51H, FTL70/FTL71.

    • Order code 71127760

      Protection cover F16 housing

      Usage: FDR56, FMI21, FMI51/FMI52, FQR56, FTI51/FTI52/FTI55/FTI56, FTI77, FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71, FTL80/FTL81/FTL85, FTM20/FTM21, FTM50/FTM51/FTM52, FTR20, FTW31/FTW32/FTW33.

    • Order code 71040497

      Weather protection cover F13/F17/F18/F27

      Usage: FMI51/FMI52, FTI51/FTI52/FTI55/FTI56, FTI77, FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71, FTL80/FTL81/FTL85, FTM20/FTM21, FTM50/FTM51/FTM52.

    • Order code 71067434

      Modification name plate, non Ex

      Blank. To fill in the new order code when a non Ex instrument has been modified. Usage: FMB50/FMB51/FMB52, FMR230/FMR231, FMR240/FMR244/FMR245, FMR250,FMR530/FMR532,FTL50/FTL50H/FTL51/ FTL51C/FTL51H, FTL70/FTL71, FTL80/FTL81/ FTL85, NMR81, PMC51, PMC71, PMP51/PMP55.

  • 57
    • Nr 57 Order code 52014048

      Sealing ring G1, 33x39 FA, 5 pcs.

      Process gasket DIN7603-A. Usage: process connection, FMI51/FMI52, FTI51/FTI52, FTI55, FTL31/FTL33, FTW23/FTW33, FTL50/FTL50H/FTL51/FTL51H, FTL80/FTL81, Sliding sleeve G1 316L (52003663), 316L, 3.1 (52011880), AlloyC22, 3.1 (71118691), FTL51, FTL71, FTL81, AlloyC22 (52003664), FTL51, FTL71.

    • Nr 57 Order code 52014047

      Sealing ring G1-1/2, 48x55 FA, 5 pcs.

      Process gasket DIN7603-A. Usage: process connection, FMI21, FMI51/FMI52, FTI51/FTI52, FTI55, FTW31/FTW32, FMP51/FMP57, FMR60/FMR62/FMR67, Sliding sleeve G1-1/2 316L (52003665), 316L,3.1 (52011882), FTL51, FTL71,FTL81, AlloyC4 (52003666), FTL51, FTL71.

    • Order code 71118691

      Sliding sleeve G1, AlloyC22, 3.1

      Switch point adjustment. Max 100bar process pressure. :: Disassembly protect. under pressure. Material: AlloyC22. Inspection cert. EN10204-3.1 material (AlloyC22 wetted parts). Usage: FTL51, FTL71, FTL81.

    • Order code 52003663

      Sliding sleeve 100bar G1, 316L

      Switch point adjustment. Max 100bar process pressure. :: Disassembly protect. under pressure. Material: 316L. Usage: FTL51, FTL71, FTL81.

    • Order code 52011880

      Sliding sleeve 100bar G1, 316L, 3.1

      Switch point adjustment. Max 100bar process pressure. :: Disassembly protect. under pressure. Material: 316L. Inspection cert. EN10204-3.1 material (316L wetted parts). Usage: FTL51, FTL71, FTL81.

    • Order code 52003664

      Sliding sleeve 100bar G1, AlloyC4

      Switch point adjustment. Max 100bar process pressure. :: Disassembly protect. under pressure. Material: AlloyC4. Usage: FTL51, FTL71.

    • Order code 52003665

      Sliding sleeve 100bar G1-1/2, 316L

      Switch point adjustment. Max 100bar process pressure. :: Disassembly protect. under pressure. Material: 316L. Usage: FTL51, FTL71, FTL81.

    • Order code 52011882

      Sliding sleeve 100bar G1-1/2, 316L, 3.1

      Switch point adjustment. Max 100bar process pressure. :: Disassembly protect. under pressure. Material: 316L. Inspection cert. EN10204-3.1 material (316L wetted parts). Usage: FTL51, FTL71, FTL81.

    • Order code 52003666

      Sliding sleeve 100bar G1-1/2, AlloyC4

      Switch point adjustment. Max 100bar process pressure. :: Disassembly protect. under pressure. Material: AlloyC4. Usage: FTL51, FTL71.

    • Order code 52011889

      Sliding sleeve NPT1, 316L, 3.1

      Switch point adjustment pressureless condition. Material: 316L. Inspection cert. EN10204-3.1 material (316L wetted parts). Usage: FTL51, FTL71, FTL81.

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