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.

Sample input

Low pressure: 0 to 6 bar - batch and online mode
High pressure: 3 to 420 bar - online mode


Up to 200 cSt in batch sampling mode
Pressurised sample up to 350 cSt

Particle sensor: PAMAS HCB-LD-50/50

Max. particle concentration: 24.000 particles per ml at 7.8 % coincidence
Nominal flow rate: 25 ml/min 

  • Calibration according to ISO 11171; Classification as per ISO 4406 or SAE AS 4059, etc.; Size range: 4 µm(c) to 70 µm(c); 8 size channels: 4, 6, 10, 14, 21, 25, 38, 70 µm(c) 
  • Calibration according to ISO 4402; Classification as per NAS 1638 or GOST 17216, etc.; Size range: 2 µm – 100 µm; 8 size channels: 2, 5, 10, 15, 20, 25, 50, 100 µm


Download S40: used to transfer stored measurements to a PC
PAMAS CMDM: Condition Monitoring Data Management
PAMAS PMA: Particle Measuring and Analysing Software

Option: Phosphate-ester compatible system

This system is compatible with phosphate-ester based hydraulic liquids, mainly used in commercial airplane hydraulic systems.

Option: S40 system for lube oil applications

Sample input: low pressure: 0 to max. 6 bar - batch & online mode.

For oil applications according to ISO 4406, the standard particle counter PAMAS S40 can also be integrated in the rugged case PAMAS GO for harsh environments.