Servo tank gauging instrument
Proservo NMS81

Proservo NMS81 ©Endress+Hauser
Proservo NMS81 ©Endress+Hauser

High precision servo measurement for liquid level, interface and density

The intelligent tank gauge Proservo NMS81 is designed for high accuracy liquid level measurement in custody transfer and inventory control applications with NMi- and PTB-approvals. It meets the relevant requirements according to OIML R85 and API 3.1B. It fulfills the exact demands of tank inventory management and loss control and is optimized in regards of total cost saving and safe operation.

  • Voordelen

    • Hardware and software developed according to IEC 61508 up to SIL3 (in homogeneous redundancy) for high level of safety

    • Maximum reliability through accuracy up to ±0.4mm (± 0.02")

    • Developed according to international metrology recommendations such as...

  • Toepassingsgebied

    For high accuracy custody transfer measurement in crude oil, gasoline, diesel, petrochemicals and chemicals.

    • Process connections: Flanges

    • Temperature: -200 to +200°C (-328 to +392°F)

    • Pressure: 0 to +25bar (0 to +362psi)

    • Maximum measuring range: 47m (...

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Details

  • Meetprincipe

    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

  • 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

  • Meetprincipe

    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

Documenten / handleidingen / software