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Proservo NMS81 - Tank gauging instrument

Servo tank gauging instrument
Proservo NMS81

High precision servo measurement for liquid level, interface and density

NMS81
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  • Measuring principle

    Servo / Float Tank Gauging

  • Characteristic / Application

    Servo Tank Gauging: High precision measurement for liquid level, interface, spot density, profile density

  • Supply / Communication

    85-264 VAC

  • 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

    -200°C...200°C
    (-328°F...392°F)

  • Process pressure absolute

    up to 25 bar (363 psi) abs

  • Wetted parts

    316L, AlloyC276, PTFE

  • Output

    Fieldbus: Modbus RS485, V1, HART
    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, NEPSI, EAC

  • Options

    Redundant fieldbus
    Alu-coated or 316L housing
    Weather protection cover
    Guide wire assembly
    Relief valve
    Gas purging nozzle connection
    Pressure gauge
    Cleaning nozzle connection

  • Specialities

    Custody transfer level measurement
    Interface measurement
    Spot density, density profile measurement

  • Measuring range

    47 m (154 ft)

  • Other approvals and certificates

    OIML, NMi, PTB

  • Measuring principle

    Servo / Float Tank Gauging

  • Characteristic / Application

    Servo Tank Gauging: High precision measurement for liquid level, interface, spot density, profile density

  • Specialities

    Custody transfer level measurement
    Interface measurement
    Spot density, density profile measurement

  • Supply / Communication

    85-264 VAC

  • Accuracy

    up to 0.4 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

    -200°C...200°C
    (-328°F...392°F)

  • Process pressure absolute / max. overpressure limit

    up to 25 bar (363 psi) abs

  • Main wetted parts

    316L, AlloyC276, PTFE

  • Process connection

    Flange:
    DN80/3" / DN100/4" / DN150/6"

  • Max. measurement distance

    47 m (154 ft)

  • Communication

    Outputs:
    Fieldbus: Modbus RS485, V1, HART
    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, NEPSI, EAC

  • Safety approvals

    Overfill protection WHG
    SIL

  • Design approvals

    EN 10204-3.1
    NACE MR0175, MR0103

  • Metrological approvals and certificates

    OIML, NMi, PTB

  • Options

    Redundant fieldbus
    Alu-coated or 316L housing
    Weather protection cover
    Guide wire assembly
    Relief valve
    Gas purging nozzle connection
    Pressure gauge
    Cleaning nozzle connection

  • Application limits

    Stilling well or guide wires for turbulent
    application
    Recommend PTFE displacer for high
    viscosity application
    Recommend AlloyC276 displacer for corrosive application
    Interface measurement requires min. difference of 0.100 g/ml
    between layers

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