How Can we Measure How Much Particle Contamination is in an oil?Particle contamination is measured using the ISO 4406 (c) standard. Commonly known as the ISO Code, ISO 4406 reports data in the form of X/Y/Z, where X, Y, and Z are integers whose values correspond to the number concentration of particles larger than 4, 6, and 14 m (c).
Results from an oil cleanliness testing are typically reported in a three number format such as 18/16/13, where 18 represents the range code representing the number of particles that are 4 microns and larger, 16 the range of particles that are 6 microns and larger, and 13 represents particles 14 microns and larger. ISO 4406 provides a standardized method of reporting particle count data. The range code represents the number of particles of a given size in one milliliter of sample.
The number of particles is then converted to what is referred to as the ISO Code or Range Code. According to the ISO 4406 standard, the ISO particle count is a measure of the number of particles greater than 4, 6, and 14 microns in every milliliter of fluid. The maximum concentration is ISO 4406 Code 24 (160.000 p/ml) HOSE CONNECTIONS Minimess M16x2 DATA OUTPUT Cumulative particle counts, as well as cleanliness classes acc. What is Cleanliness?When we speak in terms of cleanliness, we often refer to the ISO particle count of the oil. The range code represents the number of particles of a given size in one milliliter of. When oil is kept clean, wear rates go down and component service life goes up. According to the ISO 4406 standard, the ISO particle count is a measure of the number of particles greater than 4, 6, and 14 microns in every milliliter of fluid.
For this reason, it cannot be made available for download from IPU’s web site.Studies show that approximately half of lost machine life is due to mechanical wear and approximately 80% of mechanical wear is caused by particle contamination in the oil.
The full text of the standard can be purchased from the ISO Website. It has to be purchased from the International Organization for Standardization (ISO) website. Range Numberĭetailed Information on ISO 4406:1999 is not available free-of-charge. It translates what each ISO ‘range number’ means in terms of number of particles found at each micron test. When the raw data in one of the size ranges results in a particle count of fewer than 20 particles, the scale number for that size range is labeled with. The table below is an extension of the example given above. ISO standard 4406:1999 provides a way of summarizing the distribution of contaminants in a fluid by counting the particles per 100ml sample of hydraulic fluid: the figures are cumulative. all particles that are larger than or equal to 4 m. ISO 4406 counts particles accumulatively, i.e. Specifications ISO 4406 Cleanliness Table Mobile Particle Counter 08 Contamination Types, Origin, Examples 12 Damage Caused By Contamination 13 The Objective.
This approach streamlines the monitoring of. The third number (13) indicates the level of contamination by particles greater than 14 micronįor the example given above (18/16/13) the following table shows what each of the range number translates to in terms of particle quantities: Range Number By placing a liquid particle counter in-line with an ICP-OES system it is possible to analyze wear metals and particles in lubricant samples in one run.For example, results of 18/15/11 mean that, there were 2,500 5,000 particles at 4 µm or greater, 320 640 particles at 6 µm.
The second number (16) indicates the level of contamination by particles greater than 6 micron We report our findings using a codifying system (ISO 4406) which converts the counts for 4 µm, 6 µm and 14 µm into a number series that is then used to report and compare, normally referred to as the ISO code.The first number (18) indicates the level of contamination by particles greater than 4 micron.The cleanliness code is made up of three numbers that identify the number of particles that are present in one millilitre of fuel: Annex A forms a normative part of this International Standard. Because of this, most companies have established programs to monitor. Defining the automatic particle counter code sizes in this way validates direct comparison of measurements made in accordance with this standard using either measurement method, or between such measurements and data records based on ISO 4406:1987. ISO 4406:1999 is the internationally recognised method of quoting the solid particulate count in a fuel sample. Fluid contamination is a primary root cause of mechanical component wear and reduction in system reliability and performance.