Iso 4406 to nas 1638 conversion
![Iso 4406 to nas 1638 conversion](https://kumkoniak.com/31.jpg)
It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. No other units of measurement are included in this standard. 1.7 The values stated in SI units are to be regarded as standard.
#Iso 4406 to nas 1638 conversion iso#
1.6 The test method is specific to automatic particle counters that use the light extinction principle and are calibrated according to the latest revision of ISO 11171. 1.5 Samples that are opaque after dilution are not suitable for analysis using this test method.
![iso 4406 to nas 1638 conversion iso 4406 to nas 1638 conversion](http://swsclabs.com/images/basic_tests08.gif)
1.4 Samples containing visible particles may not be suitable for analysis using this test method. This procedure may be appropriate for other petroleum and synthetic based lubricants not included in the precision statement. Applicable viscosity range is up to 1000 mm 2 /s at 40 C.
![iso 4406 to nas 1638 conversion iso 4406 to nas 1638 conversion](https://oilsafe.it/languagepacks/images/nas1638-iso4406/5/numeri-scala-particelle.d1578325793.jpg)
1.3 Lubricants that can be analyzed by this test method are categorized as petroleum products or synthetic based products, such as: polyalpha olefin, polyalkylene glycol, or phosphate ester. This subscript (c) strictly only applies to particles up to 50 m. Note 2: The subscript (c) is used to denote that the apparatus has been calibrated in accordance with ISO 11171. Note 1: For the purpose of this test method, water droplets not masked by the diluent procedure are detected as particles, and agglomerated particles are detected and reported as a single larger particle. 1.2 Particles considered are in the range from 4 m (c) to 200 m (c) with the upper limit being dependent on the specific automatic particle counter being used. ASTM D7647-10(2018) Standard Test Method for Automatic Particle Counting of Lubricating and Hydraulic Fluids Using Dilution Techniques to Eliminate the Contribution of Water and Interfering Soft Particles by Light Extinctionġ.1 This test method covers the determination of particle concentration and particle size distribution in new and in-service oils used for lubrication and hydraulic purposes.
![Iso 4406 to nas 1638 conversion](https://kumkoniak.com/31.jpg)