Pacific Power Company through years of research, microscopic particle detection technology invention may well determine the type, size, characteristics, and morphology of the particles in the lubricant and the like. Their trials statistical results showed that: 53% of machinery and equipment failures is microscopic particle detection technology first discovered, and this technology is a mechanical equipment failure earlier time than vibration analysis 4 to 6 months.
Analytical method
Particle microscopic analysis is the nature of a certain amount of oil after filter paper, the filter paper was observed under an optical microscope, the retentate. Depending on the use and the specific requirements of the oil can be chosen individually 13mm diameter and 47mm diameter filter paper. Specific analysis process is: first sample into an ultrasonic bath with hot water, heating and stirring, to reduce the viscosity of the oil, and to easily precipitated particles are uniformly dispersed in the oil. The samples were then removed from the water bath, shaken thoroughly (at least 30), with a pipette quickly draw 1mL sample from the vial. It is worth noting that the oil absorption of a number of factors should be determined according to the oil type, oil pollution, testing requirements, but on the same piece of equipment before and after the measurement results in order to make comparable, reduce errors, it is best to take the same amount of oil . In addition, polluting oil may be appropriate to reduce the amount of sample (eg 0.5mL), for the relatively clean oil samples may be appropriate to increase the sample volume (5mL). 13mm and 47mm diameter filter paper method is different.
13mm diameter filter paper method: 1mL oil into a test tube, diluted with light petroleum solvent (8 ~ 9mL petroleum ether or other solvent), the solvent must be diluted with the same oil samples treated filter paper or filter paper higher level processing, dilution solvent to remove impurities. After shaking the mixture evenly into the mixing tube syringe fitted with 13mm diameter filter paper, you can select 0.5 ~ 3.0mm specifications required depending on the type of paper and oil. The mixture is forced through the filter, while diluting solvent cleaning with a clean test tube, also through a filter paper. 13mm diameter filter paper was removed from the syringe, placed on a standard glass microscope slide, and then into the evaporator filled with acetone. A small amount of acetone used to process cellulose nitrate filter paper, so that you can use to view the transmitted and reflected light was trapped on the filter paper.
47mm diameter filter paper method: Take 1mL oil sample into the funnel, then the bottom of the funnel vacuum flask, funnel fitted with 47mm diameter filter by vacuuming the oil through a filter paper, and the filtrate was used to clean (note evacuated equipment must be grounded to prevent static electricity generation).
