Title: Measuring method and apparatus for material surface position or height
Application Number: 93104757 Application Date: 1993.04.22
Publication Number: 1094512 Publication Date: 1994.11.02
Approval Pub. Date: Granted Pub. Date: 2001.01.03
International Classifi-cation: G01F23/288
Applicant(s) Name: Lanzhou Univ. Address: 730000
Inventor(s) Name: Liu Zhengmin, Liu Zhaoyuan
Attorney & Agent: ZHANG JIN
Abstract:
     This invented method is to detect back-scattering gamma counting rate, gamma counting rate is converted into electric signal, and this signal is compared with the signal value previously set. When the mentioned electric signal is not equal to the one previously set, the control motor makes forward or reverse rotation bring about the measuring mechanism to move along the height direction of material level; when the mentioned electric signal is equal to the one previously set, the control motor stops motion so that the measuring mechanism shows the position of material level.
Time: 7
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