Principle of cleanliness detector in portable hydraulic oil
For a better understanding of the device, please refer to the image for the components and check the appendix for detailed information about each part. Before using the instrument, make sure you are familiar with the component models and their respective names.
Before heading out on a business trip, ensure that the unused analysis membrane is clean and properly stored. Also, check that there is enough solvent available and confirm that the flashlight is functional. Prepare a sample bottle inside the box as a waste collection container and label it clearly. This bottle will be used to collect the fluid that flushes the hose before sampling from the tank. Keep a comparison sample and the operating instructions for determining the oil's contamination level inside the box, placed securely in the foam and at the back.
To obtain an accurate oil sample, it should be taken when the system is at its normal operating temperature—either while the system is running or immediately after it has been turned off. Before opening the sampling valve, wipe the exterior of the valve to remove any dirt. Then, open the valve and allow sufficient liquid to flow through, directing it into the waste container or back into the tank. This step ensures that the valve is properly flushed before taking the actual sample. Once the system is flushed, collect the liquid sample into a clean, sealed bottle and close the sampling valve immediately. Avoid adjusting the sampling valve during this process to prevent contamination or errors.
When sampling from the fuel tank or sump, start by inserting one end of the hose into the protruding port of the vacuum pump. Push the hose all the way to the bottom of the vacuum pump and secure the end cap by tightening it clockwise. Then, collect the liquid by screwing the bottle onto the vacuum pump. Insert the other end of the hose into the oil and begin operating the vacuum pump. When the bottle reaches approximately two-thirds full, unscrew it from the vacuum pump and pour the collected liquid into the bottle. Next, attach the second sampling bottle to the vacuum pump and take a second sample. Remove the cap from the sampling bottle once the second sample is collected.
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