Float switch for point level detection in liquids - Liquifloat FTS20

Float switch for point level detection in liquids

Liquifloat T FTS20

from kn345.-
Need help?

Info-Hotline
00385 1 6591 780

    • 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 HRKOrder 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.392.-365.-345.- 52010122
    Liquifloat T FTS20 AC/DC PP/PUR, 5m. Same as above, except cable coating: PUR392.-365.-345.- 52010123
    Liquifloat T FTS20 AC/DC PP/CSM, 5m. Same as above, except cable coating: CSM.392.-365.-345.- 52010124
    Product / VersionPrice / pcs. in HRKOrder 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.772.-718.-680.- 71035520
    Liquifloat T FTS20 AC/DC PP/PUR, 20m. Same as above, except cable coating: PUR.772.-718.-680.- 71035521
    Liquifloat T FTS20 AC/DC PP/CSM, 20m. Same as above, except material coating: CSM.772.-718.-680.- 71035522
    Product / VersionPrice / pcs. in HRKOrder 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.392.-365.-345.- 52010119
    Liquifloat T FTS20 NAMUR PP/PUR, 5m. Same as above, except cable coating: PUR.392.-365.-345.- 52010120
    Liquifloat T FTS20 NAMUR PP/CSM, 5m. Same as above, except cable coating: CSM.392.-365.-345.- 52010121
    Product / VersionPrice / pcs. in HRKOrder 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.772.-718.-680.- 71035516
    Liquifloat T FTS20 NAMUR PP/PUR, 20m. Same as above, except cable coating: PUR.772.-718.-680.- 71035517
    Liquifloat T FTS20 NAMUR PP/CSM, 20m. Same as above, except cable coating: CSM.772.-718.-680.- 71035518

    Accessories

    Product / VersionPrice / pcs. in HRKOrder code
    Compression gland G1, PVC164.90 52010125
    Tensioning weight FTS20, PA coated190.04 52010127
    Counter nut G1, PVC61.49 52010126

    Prices valid until 31.08.2017 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