发明名称 |
THICKNESS METER FOR PLATE MATERIAL UNDER TRAVELLING |
摘要 |
PURPOSE:To remove steady offset by providing a thickness meter with a displacement measuring means for measuring an axial interval obtained when two gauge rollers rotating while abutting upon a plate-like member are abutted on each other and using the measured value as a reference interval. CONSTITUTION:The axial interval of the two gauge rollers 10, 11 rotating while abutting upon the plate-like member is converted into a corresponding AC signal by a differential transformer 12 and the AC signal is supplied to an AC signal/ DC signal convertion circuit (AC/DC conversion circuit) 13. The AC/DC conversion circuit 13 constituted of a synchronous detector or the like detects the output from the differential amplifier 12, converts the output into a DC signal and supplies the DC signal to a corrected value calculating circuit 14 and a differential amplifier 15. Said constitution makes it possible to remove steady offset generated when characteristic change or the like is generated on the side of a circuit measuring the displacement of the gauge rollers or the like. |
申请公布号 |
JPS6055221(A) |
申请公布日期 |
1985.03.30 |
申请号 |
JP19830163703 |
申请日期 |
1983.09.06 |
申请人 |
ANRITSU DENKI KK;NIHON KINZOKU KOGYO KK |
发明人 |
UME KAZUO;HIMIZU KAZUO;FUJITA KEIJI;HATSUTORI MASAJI |
分类号 |
G01B7/00;G01B7/06;G01B21/08;(IPC1-7):G01B21/08 |
主分类号 |
G01B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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