| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid level measuring device for measuring liquid level of the melted metal inside of a crucible of a metal melting device, metal depositing device and metal vaporizing device or the like. SOLUTION: In a liquid level measuring device for obtaining the liquid level of the melted metal as a height of the liquid surface to be irradiated with the electron beam on the basis of two two-dimensional image, which is obtained by picking-up the braking X-ray to be generated by the irradiation of a melted mounted metal with the electron beam with two pin-hole type X-ray cameras, two pin-hole X-ray cameras 1, 2 are provided at desirable positions on a crucible 27, and a plane 25, which includes the electron beam 31 radiating straight line, is obtained from the image of one of the two cameras, and a straight line 22 for obtaining one point on the radiating straight line is obtained from the image of the other camera, and an intersection 26 of the straight line 22 and the plane 25 is displayed as the liquid level. |
