The PAMAS S4031 GO WG is a portable particle counting system for water based hydraulic liquids, mainly used for hydraulic systems in offshore oil and gas industry 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 based hydraulic fluids 

  • Subsea Christmas tree and wellhead assemblies

  • Hydraulic-Power-Units

  • Hydraulic Accumulators

  • Subsea Umbilicals

  • Hydraulic valves and control systems

Standards and methods
ISO 11171 ISO 4402 ISO 4406 SAE AS4059 NAS 1638 GOST 17216
GJB 420B
GJB 420A
NAVAIR 01-1A-17*
SAE 749D*
ISO/DIS 11218.2*
ISO 11500

* in connection with PAMAS PMA software.