Particle Pal + Water Sensor - Laser Portable Particle Counter

All Particle Pals, including this unit, can be used on live hydraulic systems (up to a pressure of 350 bar) when the high pressure reducing valve is purchased.

FS9V2-RH Real-time measurement and display of particulate and water as %RH (% Saturation)

We have further developed the award-winning Particle Pal by integrating a water sensor that displays the percent saturation or relative humidity (RH) in real-time.

By incorporating a state of the art water sensor into the FS9V2 compact design, you can now get instant water %saturation levels for accurate, repeatable measurement as well as the same features the new FS9V2 Particle Pal offers; ISO/NAS/SAE readouts of particulate cleanliness, memory, priming features etc.

Why is water level measurement so important?

Most oils have a maximum allowable water content level. When water levels exceed this value, whether as emulsified, entrained or free water, moisture-related problems are inevitable. Rapid oxidation, depletion of the additive package and rusting of internal components are just a few of the many issues that water in oils causes.


Particle Pal Range

Please click on the links below to see the other Particle Pal models in the range:




  • Incorporates latest laser particle counting technology 

  • Real-time detection of solid contamination and moisture %
  • Store readings on internal memory for analysis in Excel
  • Integral gear pump and rechargeable battery 

  • Laptop connectivity for data transfer


  • Live ISO, NAS and SAE results plus water content %RH
  • Compact, lightweight unit with robust casing

  • Sample direct from oil reservoir or live system via pressure reducer valve
  • Accurate, repeatable and consistent results
  • The ideal survey tool for field and laboratory use
Contact Us

Quotation request