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E-direct complements our traditional offering by providing you with a quick, effective way to purchase easy-to-configure, entry-level instrumentation.

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Servo tank gauging instrument
Proservo NMS83

High precision servo measurement for liquid level, interface and density for hygienic applications

  • Proservo NMS83 ©Endress+Hauser
  • Proservo NMS83 ©Endress+Hauser

The intelligent tank gauge Proservo NMS83 is designed for high accuracy liquid level measurement in custody transfer and inventory control applications with NMi- and PTB-approvals. It meets all requirements for hygienic applications. It fulfills the exact demands of tank inventory management and loss control and is optimized in regards of total cost saving and safe operation.


  • 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 OIML R85 and API MPMS

  • Local and country-specific certifications like NMi or PTB for custody transfer applications

  • Simplified installation and trouble-free operations due to easy connection to major DCS systems via open protocols

  • Measurement of interfaces between up to three liquid layers, tank bottom, spot, and profile densities

Field of application

For high accuracy custody transfer measurement in beer, whiskey, wine and sake.

  • Process connections: Flanges

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

  • Pressure: 0 to +6bar (0 to +87psi)

  • Maximum measuring range: 22m (72ft)

  • Accuracy: ±0.4mm (±0.02")

  • International explosion protection and custody transfer certificates, overfill prevention WHG, SIL

Features and specifications

Documents / Manuals / Software

Accessories / Spare parts


Endress+Hauser d.o.o. Slovenija
Pot k sejmišču 26 a 1231 Ljubljana - Črnuče , Slovenia
Tel.: +386 1 514 02 50
Fax: +386 1 519 22 98

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