Particle Pal Plus High Viscosity: Particulate, Water RH%, Viscosity and Density

  • Particle Pal Plus logo
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Portable Particulate, Water, Viscosity and Density sensing for oils up to 2,400cSt

This version of our Particle Pal Plus has the largest number of sensors built-in.  Particulate, Water expressed as %RH (Relative Humidity) plus Viscosity and Density are all reported on a large touch screen display.  Oils up to 2,400cSt can be analysed. 


  • Close up image of particulate

Digital Imaging Particle Counting, Water sensing plus a Viscosity & Density sensor

We've embedded the latest in particle counting technology along with a viscosity and density sensor into our new Particle Pal Plus series. Giving ISO 4406 counts as well as 4, 6, 14, 21, 38 & 70-micron sizing and bubble elimination. Digital imaging counting technology, combined with advanced algorithms, sorts particles into fatigue wear, cutting wear and sliding wear categories to give root cause analysis. The viscosity sensor gives live dynamic readings. This powerful technology when coupled with an additional sensor for measuring water content gives unprecedented, on-the-spot insight into the condition of your oil.

Built-in Display

  • FS9V4 Screenshot
    FS9V4 Screenshot
  1. Clear and easy to read ISO code which changes between green, white and red to indicate the oil cleanliness.

  2. Oil cleanliness for each size category details the ISO code, number of particles per millilitre and the bubbles detected.

  3. Additional sensors give an unprecedented insight into the overall condition of the oil.

  4. Additional settings allow control of the pump speed for priming and flushing, data logging, ISO cleanliness alarm limits and changing the time zone.

  5. Oil cleanliness is trended over time to show how its condition changes.

  6. Particles are analysed and sorted into fatigue wear, cutting wear, sliding wear and fibre identification to give root cause analysis.

  7. Open a full-size QR code which can be scanned from your mobile device to open the last 5 tests as a fully tabular and graphical report on



  • on mobile

Watch the demo video

Online reporting tool

Particle Pal Plus has the ability to generate a QR code, representing the 5 most recent tests. When scanned on a mobile device this will open a fully tabulated and graphical report based on those readings hosted on After viewing the report you can choose to create or log into your user account, then save your reports.

Additional test information can be added to saved reports for future retrieval, as well as optionally displaying your own company name and logo before being shared with third parties such as your own customers.



Digital Imaging Particulate Counter

Capable of broad size determination from 4, 6, 14, 21, 38 & 70 micron counts. Air bubble and water droplet elimination. Shape determination to identify fatigue, sliding or cutting wear as well as fibre identification.

Battery Life

Internal rechargeable lithium batteries provide up to ten hours of use.

Water Sensor

Water in oil is a contaminant that can contribute to microbial growth and encourage further contamination, from solids to rust. The inbuilt water sensor shows the relative humidity of any oil as % saturation.

Viscosity & Density Sensor

The accurate piezo electric viscometer has a measuring range of 25-400mPa.s Knowing the viscosity of your oil can help spot end of life or dilution/ topping up issues.

Internal Stepper Motor Pump

Stepper motor-driven pump to deliver exact flow rates for any oil, from 1 to 2,400 cSt. The pump also allows connection to a live system up to 350bar via an optional high pressure adaptor.

Water content

Displayed as % saturation (relative humidity). Helps inform whether an oil change is actually required.


Displays live density and temperature. (kg/m³)

Particulate analysis.

The Atten2 digital imaging particle counter gives advanced size and shape recognition for any sample.    Counting particulate in fuel and virtually any oil up to 2400cSt, the Atten2 device also eliminates air bubbles, making it ideal for heavy lube and gear oil applications in cold temperatures. Reporting 4, 6, 14, 21, 38 & 70 micron counts as well as categorising any particle greater than 20 microns into Fatigue Wear, Sliding Wear, Cutting Wear and Fibres.

Particle Pal Plus - Advanced Fuel Analysis - Technical Information

Fluid Compatibility Synthetic Oils, Organic Oils, Mineral Oils & Diesel Fuel (2,400 cSt viscosity limit)
Display Information

Particulate: ISO 4406, SAE AS4059 & NAS 1638, bubble elimination and particulate wear analysis.
Water sensing: Water is displayed as relative humidity (RH) % saturation.
Viscosity: Range: 25-400mPa.s
Resolution: 0.1mPa.s
Accuracy: +/- 5%
Density: Range: 0.6kg/m³ - 1.3kg/m³
Resolution: 0.001kg/m³
Accuracy: +/- 2%

Modes of Operation High pressure live system sampling (up to 350 bar) - via a high pressure adaptor.
Bottle sampling and tank sampling.
Data All data stored locally with an option to export to CSV or PDF.