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.

Servo tank gauging instrument Proservo NMS81

High precision servo measurement for liquid level, interface and density

Specs at a glance

• Accuracy

  up to 0.4 mm

• Process temperature

  -200°C...200°C
  (-328°F...392°F)

• Process pressure / max. overpressure limit

  up to 25 bar (363 psi) abs

• Max. measurement distance

  47 m (154 ft)

• Main wetted parts

  316L, AlloyC276, PTFE

Field of application

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.

Benefits

• 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

• Superior corrosion resistance with 316L materials in the process compatible with sour applications such as crude oil

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

• Best fit for LNG/LPG applications without influence of dc value or Boil Off Gas