Liquiphant 31 - Liquid level switch
A3EHEDGIOLINK



Point level switch for liquids in the food and beverage industry

Liquipoint FTW23

from $159.-
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    • Function testing of switch outputs with test magnet
    • Separate configuration of two switching thresholds, e.g. medium detection and medium differentiation
    • 3-A and EHEDG certificates 

    Specs at a glance

    Product Water-based medium
    Installation Vessels and pipes
    Process temperature range

    –20 to +100 °C (–4 to +212 °F)

    (For 1 hour: +135 °C (+275 °F))

    Process pressure range –1 to +16 bar (–14.5 to +232 psi)
    Product / VersionPrice / pcs. in USDOrder code
    Power Supply; OutputElectrical ConnectionProcess Connection1 to 34 to 1011+
    10-30VDC; 3-wire PNPPlug M12, IP65/67 NEMA Type 4 Encl.Thread ISO228 G1, 316L, install > accessory weld-in adapter206.-192.-181.- FTW23-xx4MWSJ
    Thread G1/2, 316L install > process sleeve hygienic196.-182.-173.- FTW23-xx4MWVJ
    Thread ISO228 G3/4, 316L, install > accessory weld-in adapter181.-168.-159.- FTW23-xx4MW5J
    Thread M24, 316L install > accessory adapter196.-182.-173.- FTW23-xx4MX2J
    Plug M12, IP66/68/69 NEMA Type 4/6P Encl.Thread ISO228 G1, 316L, install > accessory weld-in adapter257.-239.-226.- FTW23-xx4NWSJ
    Thread G1/2, 316L install > process sleeve hygienic247.-229.-217.- FTW23-xx4NWVJ
    Thread ISO228 G3/4, 316L, install > accessory weld-in adapter231.-215.-204.- FTW23-xx4NW5J
    Thread M24, 316L install > accessory adapter247.-229.-217.- FTW23-xx4NX2J
    IO-Link; DC-PNPPlug M12, IP65/67 NEMA Type 4 Encl.Thread ISO228 G1, 316L, install > accessory weld-in adapter206.-192.-181.- FTW23-xx7MWSJ
    Thread G1/2, 316L install > process sleeve hygienic196.-182.-173.- FTW23-xx7MWVJ
    Thread ISO228 G3/4, 316L, install > accessory weld-in adapter181.-168.-159.- FTW23-xx7MW5J
    Thread M24, 316L install > accessory adapter196.-182.-173.- FTW23-xx7MX2J
    Plug M12, IP66/68/69 NEMA Type 4/6P Encl.Thread ISO228 G1, 316L, install > accessory weld-in adapter257.-239.-226.- FTW23-xx7NWSJ
    Thread G1/2, 316L install > process sleeve hygienic247.-229.-217.- FTW23-xx7NWVJ
    Thread ISO228 G3/4, 316L, install > accessory weld-in adapter231.-215.-204.- FTW23-xx7NW5J
    Thread M24, 316L install > accessory adapter247.-229.-217.- FTW23-xx7NX2J

    Accessories

    Product / VersionPrice / pcs. in USDOrder code
    Weld-in adapter G3/4 d=50, 316L26.67 71258355
    Weld-in adapter G3/4, d=29, 316L26.67 71258357
    Weld-in adapter G1, d=60, 316L55.87 52001051
    Weld-in adapter G1, d=53, 316L37.95 71258358
    Cable 4x0.34, box M12, 316L,LED,90o,L=5m23.93 52018763
    Cable 4x0.34, box M12,Cu Sn/Ni,90o,L=5m12.63 52010285
    Socket for plug 4p-125V, 4A-M1216.91 52006263
    Test magnet9.53 71267011

    Prices valid until 31.08.2018 in USD per unit (not including shipping and applicable sales tax). See
    Endress+Hauser Terms and Conditions

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  • Application

    The Liquipoint FTW23 is a point level switch for water-based liquids. It is used preferably in storage tanks, mixing vessels and pipes. Developed and built for the food and beverage industry, the Liquipoint FTW23 meets international hygienic requirements. The Liquipoint FTW23 can be used permanently in process temperatures up to 100 °C (212 °F) and in cleaning and sterilization processes to 135 °C (275 °F) for 60 minutes.

    Function

    The capacitance at the tip of the sensor, and therefore the dielectric value of the medium, is determined using an electrical field. Given that the dielectric value of air and a water-based liquid differ, the Liquipoint FTW23 can differentiate between the two states, i.e. covered and uncovered.

    Application Example

    Point Level switch for liquids Liquiphant FTL31 - Installation example

    The measuring system consists of a Liquipoint FTW23 point level switch, e.g. for connection to programmable logic controllers (PLC).

    a) Overfill protection or upper level detection (MAX)

    b) Pump dry running protection (MIN)

    c) Lower level detection (MIN)

  • Technical data

    Output
    Switch output

    3-wire DC-PNP:
    – 2 DC-PNP outputs, switched using XOR operation
    – 200 mA connectable load (short-circuit proof)

    Devices with IO-Link:
    – 2 DC-PNP outputs, freely configurable
    – 1 switch output active: 200 mA connectable load (short-circuit proof)
    – Both switch outputs active: connectable load of 105 mA each (short-circuit proof)

    Residual voltage <3 V
    Residual current <100 μA
    Supply voltage 10 to 30 V DC
    Power consumption <1.2 W (at max. load: 200 mA)
    Current consumption <40 mA
    Cable specification IEC 60947-5-2
    Connecting cable
    length
    – max. 25 Ω/core, total capacity <100 nF
    – IO-Link communication: <10 nF
    Performance characteristics
    Reference operating
    conditions

    Horizontal orientation:

    – Ambient temperature: 20 °C (68 °F) ±5 °C

    –Medium temperature: 20 °C (68 °F) ±5 °C

    – Process pressure: 1 bar (14.5 psi)

    –Medium: water

    Switching accuracy ±2 mm (0.08 in) in accordance with DIN 61298-2
    Hysteresis Typically ±1 mm (0.04 in)
    Non-repeatability ±1 mm (0.04 in) in accordance with DIN 61298-2
    Switching delay

    0.5 s when sensor is covered

    1.0 s when sensor is uncovered

    Switch-on delay <2 s (previously not through-connected)
    Orientation any position
    Environment
    Ambient temperature
    range

    –20 to +70 °C (–4 to +158 °F) (at TProcess ≤ 80 °C (176 °F)),

    –20 to +35 °C (–4 to +95 °F) (at TProcess = 135 °C (275 °F))

    Storage temperature –40 to +85 °C (–40 to +185 °F)
    Climate class DIN EN 60068-2-38/IEC 68-2-38: test Z/AD
    Degree of protection

    – IP65/67 NEMA Type 4X Enclosure (M12 connector for plastic housing cover)

    – IP66/68/69K NEMA Type 4X/6P Enclosure (M12 connector for metal housing cover)

    Short-circuit
    protection

    – Overload protection/short-circuit protection at I > 200 mA
    – Device with IO-Link: 105 mA per output if both switch outputs are active

    Process
    Process temperature
    range
    –20 to +100 °C (–4 to +212 °F) (For 1 hour: +135 °C (+275 °F))
    Process pressure
    range
    –1 to +16 bar (–14.5 to +232 psi)
    Process fluid – Water-based media with a dielectric constant (DC) > 20 (default)
    – Device with IO-Link communication: adjustment up to DC > 1.5 via the IO-Link interface for water-, alcohol- and oil-based liquids or powdered products
    Mechanical construction
    Weight Max. 300 g (10.58 oz)
    Materials in contact
    with process

    – Sensor: 316L (1.4404), PEEK The material PEEK meets the requirements of EU 1935/2004, 10/2011,
    2023/2006 and FDA 21 CFR 177.2415

    – Process connection: 316L (1.4404/1.4435)

    Materials not in
    contact with process

    Housing covers:

    – M12 metal: 316L (1.4404)

    – M12 plastic: PPSU; Design ring: PBT/PC; Housing: 316L (1.4404)

    Surface Ra ≤ 0.76 μm (30 μin)
    Approvals
    Approval CSA C/US General Purpose
    Sanitary compatibility 3-A, EHEDG

    Dimensions in mm (inches)

    Housing, electrical connection

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

    a) M12 (metal)

    b) M12 (plastic)

     

    Installation according to instruction manual

     

    Process connections

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

    a) G¾"

    b) G1"

    c) M24×1,5

    d) G½" Hygiene adapter

     

    Installation according to instruction manual

     

    Electrical connection

     

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

    a) M12 connector

    b) Function monitoring with antivalence

    c) IO-Link with one switch output

  • More documents for FTW23
  • IO-Link

    Besides its general benefits, as summarized below, using IO-Link point-to-point communication with our hygienic level switch Liquipoint FTW23 allows:

    • Setting up a second switch output
    • Setting up the device for usage in products with DC values down to 1,5 (non-conductive media)
    • Setting up the device for usage in powdery products (e.g. coffee powder)

     

    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