Float switch for point level detection in liquids - Liquifloat FTS20

Float switch for point level detection in liquids

Liquifloat T FTS20

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    • Simple and cost-effective

    • Switching element as proximity or microswitch

    • Different cable materials for different liquids

    Specs at a glance

    Function Level switch
    Product Liquids
    Ambient temperature ≤85 °C (185 °F)
    Density ≥0.8 g/cm³
    Ambient pressure ≤3 bar (44 psi)
    Product / VersionPrice / pcs. in SEKOrder code
    Floatswitch FTS20; with 5m cable, Standard1 to 34 to 1011+
    Liquifloat T FTS20 AC/DC PP/PVC, 5m Point level switch, float. Application: liquids. Microswitch double throw 250VAC/150VDC. Cylindric shape fits through G1. Floating body: PP (Polypropylene). Cable: PVC. Cable length: 5m.478,-445,-421,- 52010122
    Liquifloat T FTS20 AC/DC PP/PUR, 5m. Same as above, except cable coating: PUR478,-445,-421,- 52010123
    Liquifloat T FTS20 AC/DC PP/CSM, 5m. Same as above, except cable coating: CSM.478,-445,-421,- 52010124
    Product / VersionPrice / pcs. in SEKOrder code
    Floatswitch FTS20; with 20m cable, Standard1 to 34 to 1011+
    Liquifloat T FTS20 AC/DC PP/PVC, 20m Point level switch, float. Application: liquids. Microswitch double throw 250VAC/150VDC. Cylindric shape fits through G1. Floating body: PP (Polypropylene). Cable: PVC. Cable length: 20m.941,-875,-828,- 71035520
    Liquifloat T FTS20 AC/DC PP/PUR, 20m. Same as above, except cable coating: PUR.941,-875,-828,- 71035521
    Liquifloat T FTS20 AC/DC PP/CSM, 20m. Same as above, except material coating: CSM.941,-875,-828,- 71035522
    Product / VersionPrice / pcs. in SEKOrder code
    ATEX approved floatswitch FTS20; 5m cable1 to 34 to 1011+
    Liquifloat T FTS20 NAMUR PP/PVC, 5m Point level switch, float. Application: liquids. 2-wire EN60947-5-6 (NAMUR). For use with isolated amplifier. ATEX II 2G EEx ia IIB T5. Cylindric shape fits through G1. Floating body: PP (Polypropylene). Cable: PVC. Cable length: 5m.478,-445,-421,- 52010119
    Liquifloat T FTS20 NAMUR PP/PUR, 5m. Same as above, except cable coating: PUR.478,-445,-421,- 52010120
    Liquifloat T FTS20 NAMUR PP/CSM, 5m. Same as above, except cable coating: CSM.478,-445,-421,- 52010121
    Product / VersionPrice / pcs. in SEKOrder code
    ATEX approved floatswitch FTS20; 20m cable.1 to 34 to 1011+
    Liquifloat T FTS20 NAMUR PP/PVC, 20m Point level switch, float. Application: liquids. 2-wire EN60947-5-6 (NAMUR). For use with isolated amplifier. ATEX II 2G EEx ia IIB T5. Cylindric shape fits through G1. Floating body: PP (Polypropylene). Cable: PVC. Cable length: 20m.941,-875,-828,- 71035516
    Liquifloat T FTS20 NAMUR PP/PUR, 20m. Same as above, except cable coating: PUR.941,-875,-828,- 71035517
    Liquifloat T FTS20 NAMUR PP/CSM, 20m. Same as above, except cable coating: CSM.941,-875,-828,- 71035518

    Accessories

    Product / VersionPrice / pcs. in SEKOrder code
    Compression gland G1, PVC Usage: FTS20.175,03 52010125
    Tensioning weight FTS20, PA coated Usage: FTS20.235,93 52010127
    Counter nut G1, PVC Usage: FTS20.52,49 52010126

    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 Liquifloat T FTS20 is an easy and cost-effective alternative for point level detection in liquids. It can be used as overspill or pump protection. Different cable materials are available for a range of liquids including acids, alkalis, oils and wastewater.  

    Function

    An element built into the float switch switches when a change in level is detected. The switching process is triggered by the movement of a steel ball and, depending on the version, is carried out by an inductive initiator or a microswitch. The inductive initiator acts as a switching output and provides a switching signal to EN 60947- 5- 6 (NAMUR). The microswitch version is a two-way switch. 

    Application Example

    Float switch for point level detection in liquids - Application example

    Liquifloat T FTS20 for pump control.

    The measuring system consists of

    or

    • FTS20 in AC/DC version
  • Technical data

    FTS20 AC/DC
    Switching element Microswitch with switching ball
    Switching function Changeover contact
    Switching voltage

    AC: max. 250 V;

    DC: max. 150 V

    Switching current AC: max. 3 A; DC: max. 1 A
    Switching angle

    Upper switching point: +25° ±10°;

    lower switching point: –14° ±10°,

    measured to the horizontal

    Process temperature
    range
    PVC and PUR: +5 to +70 °C (+41 to +158 °F);
    CSM: –20 to +85 °C (–4 to +185 °F)
    Process pressure ≤3 bar (44 psi) at +20 °C (+68 °F)
    Density ≥0.8 g/cm³
    FTS20 NAMUR
    Switching element Inductive proximity switch with switching ball, closed when floating
    Power supply 8.2 V ± 2 V
    Operating current < 1.2 mA unswitched; > 2.1 mA switched
    Reverse polarity protection Yes
    Switching angle Upper switching point: +15° ±5°;
    lower switching point: –15° ±5°,
    measured to the horizontal
    Process temperature
    range

    PVC and PUR: +5 to +70 °C (+41 to +158 °F);

    CSM: –20 to +85 °C (–4 to +185 °F)

    Process pressure ≤3 bar (44 psi) at +20 °C (+68 °F)
    Density ≥0.8 g/cm³
    Approvals TÜV 01 ATEX 1709, Ex approval: II 2G EEx ia IIB T5
    Cable
    Material AC/DC, PVC, CSM: cross section 3 × 0.75 mm2
    PUR: cross section 3 × 0.50 mm2
    Areas of application and minimum cable length between fixing and floating body


    PVC: ≥50 mm (1.97”) suitable for water, dirty water, slightly aggressive media
    PUR: ≥100 mm (3.94”) suitable for fuels, heating oils, liquids containing oil
    CSM: ≥100 mm (3.94”) suitable for acids and alkalis  

    Dimensions (in mm) and materials

    Float switch for point level detection in liquids - Dimensions

    a) Polypropylen PP

     

    Installation according to instruction manual

    Electrical connection

    Inductive proximity switch with switching ball (NAMUR)

    Float switch for point level detection in liquids - Wiring

    Connection indication
    L+ = black or brown
    L- = blue
    (closing when floating)

     

    a) 1/Brown/Black

    b) 2/Blue

    Changeover contact (AC/DC)

    Float switch for point level detection in liquids - Wiring 2

    Connection indication
    Cable colors:
    black + brown = contact open
    black + blue = contact closed
    (contact position when floating)

     

    a) Blue

    b) Black

    c) Brown

  • More documents for FTS20