ANALYSIS OF A MATERIAL IN PARTICULATE FORM

摘要

An apparatus (10) for analysing material in particulate form is disclosed. T he apparatus (10) comprises a vertically elongate housing (12) having an open upper end (26) and a restricted outlet at the lower end. A probe (28) directs ligh t through a transparent cover (22), provided in one wall of the housing (12), and collec ts light reflected from particulate material in the housing (12). A slide valve (24), which includes a U-shaped section (30) and a T-shaped section (34) with a hole (32 ) therebetween, partially closes the outlet of the housing (12). Movement of t he slide valve (24) by means of a knob (56), rod (36) and coil spring (44) allows for adjustment of the flow rate of the material through the apparatus (10), as well as for clearing blockages which may occur at the exit of the apparatus (10).