ISO/TR 4808:2021 液压传动 颗粒计数和过滤试验数据的插值方法

标准编号：ISO/TR 4808:2021

中文名称：液压传动 颗粒计数和过滤试验数据的插值方法

英文名称：Hydraulic fluid power – Interpolation method for particle count and filter test data

发布日期：2021-02

标准范围

本文件描述了当在所需粒径下无法获得结果时，颗粒浓度和过滤β比率数据插值的推荐方法。它适用于评估与现有流体清洁度和过滤器β比率规范的一致性，其中规范和实际测试结果以不同的粒度单位提供，例如，规范以μm（c）为单位，但颗粒计数或β比率数据以μm（b）为单位。当规范和可用数据中的颗粒尺寸使用相同的颗粒尺寸单位，但不完全对应相同的尺寸时，本文件也适用，例如，当规定了20μm（c）下的颗粒计数，但收集了21μm（c）下的数据时。该方法允许对现有数据范围内的中间粒径进行插值，不允许对可用数据范围外的粒径进行外推。

This document describes a recommended method for the interpolation of particle concentration and filter Beta Ratio data when results are not otherwise available at the desired particle sizes. It is applicable for assessing conformance with existing fluid cleanliness and filter Beta Ratio specifications whereby the specification and actual test results are provided in different units of particle size, for example, the specification is in μm(c), but the particle counts or Beta Ratio data are in units of μm(b).This document is also applicable when particle sizes in specifications and available data use the same units of particle size, but do not correspond to exactly the same sizes, for example, when particle counts at 20 μm(c) are specified, but data was collected at 21 μm(c). This method allows interpolation to intermediate particle sizes within the range of existing data and does not permit extrapolation to particle sizes outside the range of available data.

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