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Particle counter for the remote on-site analysis of fluid samples – pressureless sampling and up to 420 bar system pressure testing

The PAMAS S40 is a portable particle counting system for oil-based liquids like hydraulic and lubricating oil. A wear resistant ceramic piston pump guarantees a constant flow. With a simple-to-use touch screen user interface, operation is easy and intuitive. The system is equipped with an integrated battery for up to three hours operation and a data storage of up to 4000 measurements. The system can be used for batch sampling and online measurements. Additional accessories are available.


  • Hydraulic oils
  • Turbine and insulation oils
  • Gear oils
  • Phosphate ester based hydraulic fluids
  • Fuels

Product features

  • Robust & convenient design
  • Lightweight only 8 kg
  • Customizable measurement analysis settings
  • Intuitive operation via touch screen
  • Automatic sample flow and volume control by wear resistant ceramic piston pump
  • Measurement from pressureless up to 420 bar system pressure
  • Pressureless measurement of fluids with viscosities of up to 1.000 cSt at 22°C (equal to ISO VG320) without the need for accessories
  • Use of any sample vessel (any customer specific or widely available containers)
  • Internal data storage of more than 4,000 measurements
  • Measurement printout via integrated thermoprinter
  • Same measurement accuracy as a laboratory unit
  • Multilingual menu navigation
  • Battery running time of more than 4 hours

Standards and methods

ISO 11171 ISO 4402 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 Sensor

Available size ranges:
4–70 µm(c) (ISO 11171)
2–100 µm (ISO 4402)
Max. particle concentration:
24.000 P/ml at 25 ml/min 

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


PAMAS Download: used to transfer stored measurements to a PC
PAMAS CMDM: Condition Monitoring Data Management
PAMAS PMA: Particle Measuring and Analysing Software


  • PAMAS S40 Standard for the measurement at up to 420 bar system pressure
  • PAMAS S40 Lube Oil for the measurement of highly viscous oil of up to 1,000 cSt
  • PAMAS S40 Fuel for the measurement of fuels such as petrol, diesel or kerosene
  • PAMAS S40 Skydrol for the measurement of phosphate ester based hydraulic fluids
  • PAMAS S40 AVTUR for the measurement of turbine fuel according to EI-IP 577 and DEFSTAN 91-091 as well as diesel according to IP PM FA


All versions are optionally available in the robust PAMAS GO housing.


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