直读式铁谱仪主要用来直接测定一种如食用级白油的润滑油油样 中磨粒的浓度和尺寸分布，只能作定量分析，能够方便而较准确地测定食用级白油油样内大小磨粒的相对数量，因而能对设备状态作出初步的诊断，是目前设备监测 和故障诊断的较好手段之一。如果不仅要了解磨损微粒的数量及分布情况，而且要观察分析磨粒的形态、表面型号和成分等因素，做出较准确的诊断，就需要使用分 析式铁谱仪。

Direct reading Ferrograph is mainly used for direct determination of a lubricating oil such as food grade white oil sample particle concentration and size distribution, can make quantitative analysis, can be conveniently and accurately determine the relative quantity of sample size of abrasive food grade white oil oil, which can make a preliminary diagnosis of the state of the equipment. Is one of the best means of equipment monitoring and fault diagnosis at present. If we want to know the number and distribution of wear particles, and observe and analyze the factors such as the shape, surface type and composition of abrasive grains and make more accurate diagnosis, we need to use analytical ferrography.