- SINFT
- 2021-05-05 17:50:07
To measure the ISO code cleanliness of any Hydraulic Oil, you can use an off-line or inline particle counter.
Apart from that, you can also use the automatic particle counter (APC).
At the moment, the calibration standard for the automatic particle counter is at ISO 11171.
First, you will set the particle counter according to the right working specifications usually by a factory calibration.
You will also prepare samples of the Hydraulic Oil that you need to test.
After that, you will pass a known volume of Hydraulic Oil through the flow aperture of the device.
As that continues you will shine a laser beam from one side to the other side of the aperture.
Additionally, you may also consider using the pore blockage technique to measure Hydraulic Oil ISO cleanliness.
You can, therefore calculate the particle size by:
Checking voltage drop through shadow formation from particles on the opposite side of the tube via light scattering techniques.
The result will be different particle counts depending on the Hydraulic Oil sample that you will be measuring.
This will be a representation of various micron levels that will indicate the cleanliness of the Hydraulic Oil.
You will then refer to the ISO 44046:99 as the standard for fluid cleanliness.
You will assign a code number according to the particle count value at three different micron levels.
This includes:Greater than 4 microns which means the Hydraulic Oil contains more than 5000 particles per milliliter of the Hydraulic Oil.
Greater than 6 microns which implies that the Hydraulic Oil contains more than 640 particles per milliliter.
Greater than 14 microns which means the Hydraulic Oil contains more than 40 particles per milliliter.