Detection apparatus and detection method

    公开(公告)号:US11099182B2

    公开(公告)日:2021-08-24

    申请号:US15637957

    申请日:2017-06-29

    Abstract: Disclosed is a detection apparatus that transfers magnetic particles through a plurality of chambers in a cartridge which includes the plurality of chambers and a channel connecting between the plurality of chambers, and that causes the magnetic particles to carry a complex of a test substance and a labelling substance, to detect the test substance on the basis of the labelling substance in the complex. The detection apparatus includes: a rotation mechanism configured to rotate the cartridge about a rotation shaft; a magnet configured to collect the magnetic particles in the chambers; a movement mechanism configured to move the magnet in a direction different from a circumferential direction of a circle in which the rotation shaft is centered; a detector configured to detect the test substance; and a controller programmed to control the rotation mechanism and the movement mechanism so as to transfer the magnetic particles from one of the chambers to another one of the chambers.

    METHOD AND DEVICE FOR SPECTRAL ANALYSIS OF A CHEMICAL COMPOSITION OF MOLTEN METALS

    公开(公告)号:US20200116642A1

    公开(公告)日:2020-04-16

    申请号:US16626898

    申请日:2018-06-29

    Abstract: The invention relates to the field of spectral analysis of the chemical composition of ferrous and non-ferrous metals and can be used in metallurgical factories to monitor the ongoing production of molten (liquid) electrically conductive materials directly in the melting units.A method for optical emission spectral analysis of the chemical composition of an electrically conductive metal melt includes the following steps: immersion of a refractory probe with a sampler into a container with a metal melt at an angle to its surface, ingress of the metal melt into the sampler due to the ferrostatic pressure and stabilization of its level due to an inert gas flow, excitation of plasma torch using electric spark from an electrode located inside the sampler, transfer of the plasma glow through the optical channel to the input of the spectrometer, receiving a spectrum of the chemical elements in the metal, processing this spectrum in the computer to evaluate composition and the mass fraction of the chemical elements in the melt, wherein when measuring the level of the liquid sample in the sampler is stabilized and maintained at the level of the lateral opening in the wall of the sampler due to the flow of inert gas, which is continuously fed into the probe and comes out as bubbles through the hole directly into the melt medium. The technical effect: increase in sensitivity and accuracy of spectral analysis of electrically conductive melts, increase in reliability and simplification of the device for plasma excitation.

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