Endress Hauser AG

- Model FMX21 - Hydrostatic Level Measurement

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Reliable and robust level probe with ceramic measuring cell and HART. The Waterpilot FMX21 transmitter with capacitive, oil-free ceramic measuring cell is typically used in the process and environmental applications for hydrostatic level measurement. With HART output, the measuring ranges can be freely adjusted and a density-compensated level measurement can be activated. It is certified for drinking water and offers integrated temperature measurement. Versions for applications in wastewaters and sludges or usage in salt water are also available.

  • Robust overload-resistant high purity ceramic sensor (99.9% Al2O3)

  • Flexible scaling of 4 to 20mA with superimposed HART 6.0 output

  • Highest level accuracy using temperature compensated density correction

  • Simultaneous measurement of level and temperature with optionally integrated Pt100 temperature sensor

  • Extensive range of accessories provides complete measuring point solutions

  • Climate proofed sensor thanks to completely potted electronics and 2-filter pressure compensation system

  • Small outer diameter of 22mm (0.87') version suitable for drinking water applications and for use in bore holes and wells with small diameters

Three different versions for drinking water, wastewater and sewage, saltwater.

  • Process connections: Suspension clamp, cable gland

  • Temperature: –10 to +70°C (14 to 158°F)

  • Measuring range: 0 to 20bar / 200m H20 (0 to 300psi / 600ft H2O)

  • Accuracy: ±0.2%, 'Platinum' ±0.1%

  • International explosion protection certificates, marine approvals, drinking water approval

Pressure

  • Measuring principle

    Hydrostatic

  • Characteristic

    Compact probe with ceramic cell for hydrostatic level measurement,

    Diameter = 22 mm: General applications, fresh water

    Diameter = 42 mm: Waste water applications

    Diameter = 29 mm: Salt water applications

  • Supply voltage

    10.5 ...35V DC

  • Reference Accuracy

    0.2%

    0.1% (optional)

  • Long term stability

    0.1% of URL/year

  • Process temperature

    -10°C...70°C
    (14°F...158°F)
    Diameter 29 mm (1.14'): 0°C...50°C
    (32°F...122°F)

  • Ambient temperature

    -10°C...70°C

    (14°F...158°F)

    Diameter 29 mm (1.14'):

    0°C...50°C

    (32°F...122°F)

  • Measuring cell

    100mbar...20bar
    (1.5psi...300psi)

  • Process connection

    Suspension clamp

    Cable mounting screws

  • Communication

    4...20 mA

    4...20 mA HART

  • Certificates / Approvals

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

  • Marine approvals

    GL/ ABS/ BV/ DNV

  • Drinking water approvals

    NSF/ KTW/ ACS

Continuous / Liquids

  • Measuring principle

    Hydrostatic

  • Characteristic / Application

    Compact probe with ceramic cell for hydrostatic level measurement,

    Diameter = 22 mm: General applications, Fresh water

    Diameter = 42 mm: Waste water applications

    Diameter = 29 mm: Salt water applications

  • Specialities

    Automatic density compensation

    Version w/o metal parts in contact to process

  • Supply / Communication

    10.5 ...35 VDC

  • Accuracy

    0.2%

    0.1% (optional)

  • Long term stability

    0.1% of URL/year

  • Ambient temperature

    -10°C...70°C

    (14°F...158°F)

    Diameter 29 mm (1.14'):

    0°C...50°C

    (32°F...122°F)

  • Process temperature

    -10°C...70°C
    (14°F...158°F)
    Diameter 29 mm (1.14'): 0°C...50°C
    (32°F...122°F)

  • Pressure measuring range

    100 mbar...20 bar
    (1.5 psi...300 psi)

  • Main wetted parts

    Diameter 22 mm and 42 mm: Seal, 316L, Ceramic

    Diameter 29 mm: Seal, PPS, Polyolefin, Ceramic

    Extension cable: PE, PUR, FEP

  • Process connection

    Suspension clamp

    Cable mounting screws

  • Max. measurement distance

    200 m H2O
    (656 ft H2O)

  • Communication

    4...20 mA

    4...20 mA HART

  • Certificates / Approvals

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

  • Marine approval

    GL/ ABS/ BV/ DNV

  • Drinking water approvals

    KTW/ NSF/ ACS

  • Options

    Absolute measuring cell

    Integrated temperature sensor Pt100, 4-wire

    customer specific adjustment

    customer specific cable marking

  • Application limits

    Measuring cell: ceramics

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