Patent ID: 7869037
Filing Date: 2011-01-11
Classification: G01N

Abstract:
1. A particle size distribution measuring device that measures particle size distribution of a particle group, comprising: a device body comprising a light source that irradiates light on the particle group and a light detector that detects intensity of diffracted light or scattered light generated by irradiation of the light, a spray measuring system that introduces a sprayed particle group as being the particle group sprayed from a nozzle into a measuring area between the light source and the light detector, and an ordinary measuring system that arranges a measuring cell that accommodates an ordinary particle group as being a particle group other than the sprayed particle group between the light source and the light detector are arranged to be exchangeable for each other; wherein the spray measuring system comprises: the spray measuring system is mounted on the device body by mounting the casing on the device body in a state that the ordinary measuring system is dismounted from the device body.