Handheld Particle Counter for Petroleum Oil

KR-PD-1 is an on-line handheld oil particle counter of high accuracy, complied with NAS 1638, ISO 4406, GJB standards.

  • Model: KRPD-1

KR-PD-1 is an on-line handheld oil particle counter of high accuracy. It adopts the principle of laser blockage method (laser shading method) to detect the size and quantity of solid particles in the oil. Based on the measurement, it does the analysis and displays the oil contamination level in various standards. (e.g NAS 1638, ISO 4406, GJB) so as to help the operator be aware of the potential risks and thereby avoid the evitable wear of parts.


Kolery Analysis Instruments

Kolery Analysis Instruments

KR-PD-1 is able to give out the result within 45 sec. An optical fiber cable goes along with the counter to connect the instrument to a PC or display screen to transfer data. BK-PD-1 can be widely applied to various kinds of oil, such as hydraulic oil, lubricant oil, gearbox oil, insulating oil (transformer oil), etc. Due to its small size and light weight, it can be easily installed on machines that consist of hydraulic system or lubricant circuit, etc. Therefore, the continuous real time monitoring of the oil quality will be available. 




1. High sensibility. Able to detect the particle as small as 1µm.

2. Multiple standards available. NAS 1638, ISO 4406, GB, GJB.

3. Efficient. Displayed data is to be updated every 45 sec.

4. Durable. 24 hours continuous real-time monitoring of oil.status.Maintenance-free.

5. Very small flow rate required. When working online, as little as 50 ml flow rate is adequate. Little influence on hydraulic or lubricant circuit.

6. Optical fiber attached. Data can be transferred to a PC if needed.

7. Compact and rugged.

8. Easy installation. Could be installed within a few minutes.





63mm*88mm*45 mm

Fluid Temperature Range

-20-80 °c

Operating Ambient Temperature

-20-60 °c

Relative Humidity

20-85%, non-condensing

Viscosity Range

0-300 cst



Particle Size

NAS 1638:2,5,15,25, 50, 100 µm

ISO:4406: 4,6,14,21, 38,70 µm


+/- half an ISO/NAS code

Typical test time

45 secs

Contamination Class

NAS1638 00-21

ISO4406 01-29

Operating Flow Rate

50-100 ml/min

Operating Pressure

Low Pressure: 0.3-3Mpa(3-30bar)

High Pressure: 3-30MPa(30-300bar)


Based on ISO MTD (ISO11171:2000)

Power Supply


Hose Connection