Type a beta (beta 10(c) >= 1000), a micron rating (10 micron absolute) or an efficiency (99.5 %). Each rating gets its own card.
A whole data sheet line can be pasted, with the beta, the dirt holding capacity and the collapse pressure. The Greek letter beta, B and beta are read as typed, and so is the at-least sign; micron as um, micron or with the micro sign. The efficiency follows (1 - 1/beta) x 100 %.
Enter the rating of a filter element from its data sheet or label: beta 10(c) >= 1000, B25(c)>=75, the older beta 10 = 75 without (c), 10 micron absolute or efficiency 99.5 %. The page names the particle size and the calibration, works out the capture efficiency and the share of particles passing the element, says what absolute and nominal mean and writes a request line that can be copied or added to the RFQ.
Only what two independent sources give the same way is used. The page gives no advice on which beta or micron rating a hydraulic, lube oil or fuel system needs; the ISO 4406 code of an oil report is read by the oil cleanliness code reader. The dirt holding capacity and the collapse pressure are carried into the request line as given, without a judgement.
The beta at a size x is the count of particles of x and larger upstream of the element over the count downstream, in the multi-pass test. Capture efficiency = (1 - 1/beta) x 100 %: beta 200 is 99.5 %, beta 1000 is 99.9 %. Without the particle size, a beta says little.
A (c) after the size means the particles were counted with counters calibrated to ISO 11171, as ISO 16889 requires. In 1999 ISO 16889 replaced the older test, ISO 4572, and its older calibration. The size scales are not identical, so a beta without (c) cannot be set beside one with (c); no conversion is given here.
A nominal rating is set by the element maker by its own method, and the figures of different makers cannot be compared. The sources describe absolute as the size of the largest particle that passes the element in a test, but differ on the efficiency behind the word. To compare, the beta at the size is needed.
| Beta | Capture efficiency | Passing of 1,000 | Example |
|---|---|---|---|
| 2 | 50 % | 500 | B10(c)=2 |
| 10 | 90 % | 100 | beta 10(c) = 10 |
| 20 | 95 % | 50 | B10(c)>=20 |
| 75 | 98.67 % | about 13 | beta 10 = 75 |
| 100 | 99 % | 10 | B5(c)>=100 |
| 200 | 99.5 % | 5 | beta 5(c) = 200 |
| 1000 | 99.9 % | 1 | B10(c)>=1000 |
| 2000 | 99.95 % | 0.5 | beta 25(c) >= 2000 |
Efficiency by (1 - 1/beta) x 100 %, particles passing as 1,000 / beta. The page decodes every example in this table the same way.
Beta as the particle count upstream over the count downstream at a size, and the efficiency (1 - 1/beta) x 100 %: two articles of a lubrication trade journal, the technical pages of a maintenance software maker, a fluid power distributor and a filter maker, and the technical article of a second filter maker, which also gives the pairs 2 to 50 %, 20 to 95 %, 75 to 98.7 %, 100 to 99 %, 200 to 99.5 %, 1000 to 99.9 % and 2000 to 99.95 %. The (c) as counters calibrated to ISO 11171, and ISO 16889 replacing ISO 4572 in 1999: the hydraulic catalogue of a filter maker, the reference pages of a particle counter maker and the lubrication journal. The two size scales not being identical: the particle counter maker and the maintenance software maker. Nominal as a figure the maker sets itself, not comparable between makers: the lubrication journal and a water treatment journal. Absolute as the largest spherical particle that passes in a test: the lubrication journal, the data sheet of a hydraulics maker and a filtration reference site. Left out: a size conversion between the older calibration and (c) (only one table was read), any efficiency or beta for the word absolute (the sources give 98 to 99 %, 90 to 99 %, 99.9 % or all particles), and the test methods behind the dirt holding capacity and the collapse pressure (no two sources read as text).
In the multi-pass test, the element had at least 1,000 times as many particles of 10 micron and larger upstream as downstream. About one particle of that size in a thousand passes: a capture efficiency of at least 99.9 %. The (c) says the particle size was measured with counters calibrated to ISO 11171, as ISO 16889 requires.
Efficiency = (1 - 1/beta) x 100 %. Beta 2 gives 50 %, beta 20 gives 95 %, beta 75 gives 98.67 %, beta 200 gives 99.5 % and beta 1000 gives 99.9 %. Back from an efficiency, beta = 1 / (1 - efficiency/100), so 99.5 % is beta 200.
A size with (c) is measured with particle counters calibrated to ISO 11171, as the multi-pass test of ISO 16889 requires. A size without (c) most likely comes from ISO 4572, the older multi-pass test that ISO 16889 replaced in 1999, and its older counter calibration. The two size scales are not identical, so the figures cannot be set side by side, and the page gives no conversion between them.
Not necessarily. The sources read describe an absolute rating as the size of the largest spherical particle that passes the element in a test, and they differ on the efficiency behind the word. Ask for the beta at the size, with the test it comes from.
A nominal rating is a figure the element maker sets by its own method. A nominal figure from one maker cannot be compared with one from another. Ask for the beta at the size, with the test it comes from.
No. It reads the rating as printed and works out the efficiency; it gives no advice on which beta or micron rating a machine needs. The oil cleanliness code reader reads the ISO 4406 code of an oil report. The dirt holding capacity and the collapse pressure are carried into the request line as given, without a judgement.
A decoded rating is a cross-check, not a filter selection. Attach a photograph of the element label or data sheet, the number of the old element and the filter housing details, and Vessel Core checks the rating before an offer goes back.
