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The PAMAS S4031 GO is a portable particle counter that is integrated in the rugged case PAMAS GO specially developed and designed for harsh environments. It can be used for batch sampling or for online measurements. A wear resistant ceramic piston pump guarantees a constant flow. With a simple-to-use touch screen user interface operation is easy and intuitive. Up to 32 free adjustable size channels may be selected and stored in the system. The system is equipped with an integrated battery for more than three hours operation and data storage of more than 4000 measurements. Real time sample measurement data can be printed during the analysis and also be revisited and printed at anytime at a later date.


  • Water
  • Suspensions
  • Cleaning fluids
  • Sea and brackish water
  • Korrosive fluids
  • Hydraulic Oil
  • Turbine and insulation oils
  • Gear and motor oils
  • Fuels
  • Phosphate ester based hydraulic fluids
  • Water based hydraulic fluids

Standards and methods

ISO 11171 ISO 4402 ISO 21501-3 ISO 21501-2 ISO 4406 SAE AS4059
NAS 1638 GOST 17216 CHARN* GJB 420B GJB 420A NAVAIR 01-1A-17*
SAE 749D* ISO/DIS 11218.2* ASTM D7647 IEC 60970 ASTM D6786 ISO 11500

*in connection with PAMAS PMA software

Volumetric sensors

Available size ranges:

  • 1–200 μm (ISO 21501-3)
  • 4–70 μm(c) (ISO 11171)
  • 2–100 μm (ISO 4402)

Max. particle concentration: 24,000 P/ml* at 25 ml/min**

Available size ranges:

  • 1–200 μm (ISO 21501-3)
  • 1–100 μm (ISO 4402)
  • 4–70 μm(c) (ISO 11171)

Max. particle concentration: 120,000 P/ml* at 25 ml/min**

Other sensors for larger particle sizes or higher concentrations are available on request.


Device with similar application


PAMAS Partikelmess- und Analysesysteme GmbH
Dieselstraße 10
D-71277 Rutesheim / Deutschland

Phone +49 7152 9963-0
Fax +49 7152 9963-32
E-Mail info@pamas.de