光透法测试粉末粒度计算方法的改进

经改进的光透法测试粉末粒度计算方法的原理是:同种粉末各不同粒径颗粒在特定的条件下有它固定的沉降高度。把这个固定的沉降高度制成"温度-沉降高度曲线板",使曲线板上各点依次对应于由仪器记录下来的粉末沉降曲线。这样,可以很简便地读出所需各粒径的透光量。此方法省去了为确定被测试粉末所需各粒径的沉降高度而进行的繁琐计算过程,可节省计算及采集数据点时间的80%左右,且精度高、差错少。

AN IMPROVEMENT OF CALCULATING METHOD FOR TESTING PARTICLE SIZE BY LIGHT TRANSMISSION

The principle of improved method for calculating particle size tested by light transmission is to use the inherent sedimentary height of the same kind of powder with various sizes. A "curve plate of temperature-sedimentary height" is made according to the inherent height, ensuring each point on the curve plate to coordinate powder sedimentary curve recorded with meter in order. Thus, it is very convenient to read out the light transmission amount of each particle diameter required for powder to be tested. This method emits the tedious calculation programa for determining sedimentary height of each particle diameter of testing powders and will save the time to calculate and gather data points bY about 80% with height accuracy and less errors.