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Micropilot NMR81 - Radar

Radar measurement
Micropilot NMR81

Drip-off lens antenna with 80 GHz transmitting frequency for custody transfer applications

NMR81
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Measuring / Application task

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  • Measuring principle

    Level radar

  • Characteristic / Application

    Lens antenna, 80GHz: High precision measurement for for storage tanks up to 30 m (98ft)

  • Specialities

    Custody transfer level measurement
    Measurement close to tank wall

  • Supply / Communication

    85-264VAC
    52-74VAC
    19-64VDC

  • Accuracy

    up to 0.5 mm

  • Ambient temperature

    Standard:
    -40°C…60°C
    (-40°F...140°F)
    For calibration to regulatory
    standards:
    -25°C…55°C
    (-13°F...131°F)

  • Process temperature

    -40°C...200°C
    (-40°F...392°F)

  • Process pressure / max. overpressure limit

    Vacuum.....16 bar abs

  • Main wetted parts

    316L, PTFE

  • Process connection

    Flange:
    DN50/2"…DN300/12"
    Flange w/ Alignment tool:
    DN100/4"…DN300/12"
    UNI-Flange:
    DN150/6"…DN300/12"
    UNI-Flange w/ Alignment tool:
    DN150/6"…DN300/12"

  • Max. measurement distance

    70 m (230 ft)
    For calibration to regulatory standards:
    30 m (98 ft)

  • Communication

    Outputs:
    Fieldbus: Modbus RS485, V1, WM550
    HART, BPM and TRL/2 (via GE option)
    Analog 4-20mA output (Exi/ Exd)
    Relay output (Exd)
    Inputs:
    Analog 4-20mA input (Exi/ Exd)
    2-, 3-, 4-wire RTD input
    Discrete input (Exd, passive/active)

  • Certificates / Approvals

    ATEX, FM, IEC Ex, EAC, JPN Ex, KC Ex,
    INMETRO, NEPSI, UK Ex

  • Safety approvals

    Overfill protection WHG
    SIL

  • Design approvals

    EN 10204-3.1
    NACE MR0175, MR0103
    AD2000

  • Metrological approvals and certificates

    OIML, NMi, PTB

  • Options

    Redundant fieldbus
    Alu-coated or 316L housing
    Weather protection cover
    Adjustable mounting seals

  • Application limits

    Maximum measuring range is
    dependent on the tank form and/
    or application
    Strong condensate or build-up
    formation

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