Dengan 10 didefinisikan sebagai jumlah partikel 5 — 10 ea per mL sampai 28 yang didefinisikan sebagai jumlah partikel 1300000 sampai 2500000 per mL sampel. If you have any questions or suggestions regarding the accessibility of this site, please. Although there is no guidance given in the standard on how to quote the levels, most industrial users quote a single code which is the highest recorded in all sizes. This principle is a feature of many of the classes that have developed since. Entretanto, é importante notar que seus valores alteram-se significativamente sob condições reais de utilização.
Esta relação é denominada razão β Beta. No coding system existed at the time for completed systems, so it was logical that it would be applied in this area. Kriteria penggolongan itu adalah berdasarkan jumlah partikel dalam range besaran mikron tertentu pada 100 mL sample hydraulic fluid. Padahal range yang lain masih terpenuhi lho. This convention is employed with laser particle size analyzers.
From this basic distribution, a series of 14 classes was created covering very clean to very dirty levels, where the interval between each class is double the contamination level. Karena kita menggunakan sample 1 mL maka kode yang kita pakai adalah 10 — 28. Another aspect that is giving rise for concern is the statement in clause 6. Kalau ingin dicari equivalensinya ya silahkan dengan cara dihitung jumlah partikel pada range acuannya. All copyright requests should be addressed to. It converts the particle counts at various size ranges into convenient broad-base classes.
Isto só poderá ser feito se tivermos o relatório discriminado do contador de partículas, como fizemos anteriormente. The accuracy, repeatability and speed of analysis allowed it to be used extensively for research into the effects of dirt on components and systems. The application of this standard was extended to industrial hydraulic systems as nothing else existed at the time. This is in spite of cleanliness specifications being written around them. Standard ini mengalami evolusi dalam tiga tahap.
The particle numbers can range from single particles to many millions; therefore, a power series is used to cover the number range with a convenient number of classes. It was also embarrassing for laboratories involved with contamination testing which often had to explain why there was no traceability and control over the dust. As technology advances, the demands placed on a lubricant are ever-increasing: pressures and temperatures are higher, reservoir sizes are smaller and component tolerances are tighter. Bagaimana jika dalam range 5-15 mikrons terdapat 16001 ea partikle? Apabila jumlah partikelnya lebih sedikit yang ditemukan pada range-range tersebut maka tentu lebih bagus. Trending these sizes was fraught with problems and inaccuracies. Padahal cuma kelebihan satu partikel. A razão β beta é considerada uma importante referência para a avaliação de desempenho de elementos filtrantes.
Jadi silahkan dihitung… Nova Kurniawan. Exemplificando, se encontrarmos um fluído com as seguintes contagens, por faixas de tamanho: Neste exemplo este fluido será classificado como classe 7 maior classe encontrada. Equally, sizes that are not critical can be omitted. In Table 3 it can be seen that the particle counts are defined by a number relating to the quantity of particles and a letter relating to the size. Isso ocorre devido às características dos contaminantes e às condições de pressão, vazão e viscosidade dos sistemas hidráulicos serem, na prática, bastante diferentes das condições padronizadas dos testes realizados em laboratórios.
This distribution was based on particle contamination inside delivered aircraft hydraulic components in the 1960s. This was based upon the size distribution of A. . The only major difference in particle counts is likely to be at the 4 µm c -size, which effectively has no previous equivalent; but as few organizations have cleanliness specification based upon the size, the change would be minimal. Dengan A adalah jumlah partikel dalam 1 mL sample yang lebih besar dari 2 mikrons. Oklahoma State University, under the direction of Prof.
The basis of the code is seen in Table 3. A praiseworthy step because it should give identical results - in theory. C adalah jumlah partikel dalam 1 mL sample yang lebih besar dari 15 mikrons. Any use, including reproduction requires our written permission. . .
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