Rod, device and method for detecting dust position

The invention discloses a rod, a device and a method for detecting a dust position. The rod for detecting the dust position is provided with a plurality of enlarged radio frequency admittance level gage probes, a sheathed temperature gauge and gas spray equipment; and the outer surface of the rod is covered with an insulation protection jacket, a supporting protection sleeve and the like. The device for detecting the dust position consists of a material detection controller which comprises operation display equipment, an external gas source device and the like. In the method for detecting the dust position, three gas spray automatic control modes are set; the first detection of a material signal and a temperature signal is a core event; a mutual checking working manner of a dust position confirmation signal is sent out until at least two material signals are stably consistent with each other after triggering and spraying is finished; and two manual modes protect the safety of a person in a special working state. The arrangement mode of the enlarged detection probes and the plurality of level gauges enlarges the contact area and is very favorable for materials having poor flowability; and then, due to the equal arrangement area, the detection and the sampling are more typical.