Title:
METHOD AND DEVICE FOR MONITORING LEVEL
Document Type and Number:
Japanese Patent JPS63111424
Kind Code:
A
Abstract:
A method and apparatus are provided for monitoring the surface level of a liquid (11), such as molten metal, by moving first and second sensing means (22,24), preferably electrodes, vertically with respect to the surface level of the liquid (11), positioning the lower portion of the second electrode (24) vertically displaced upwardly with respect to the lower portion of the first electrode (22), such that the amount of vertical displacement is directly related to the accuracy of determining the liquid level, generating an electrical signal as a function of each electrode position, then moving the first and second electrode vertically with respect to the surface level of the liquid in response to the electrical signal corresponding to each electrode, and thereafter determining the liquid level when the first electrode (22) is in contact with the liquid (11) and the second electrode (24) is in noncontacting position above the liquid (11).
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Inventors:
ASHIYOKU MAASHII
Application Number:
JP23706587A
Publication Date:
May 16, 1988
Filing Date:
September 21, 1987
Export Citation:
Assignee:
ALLEGHENY INT INC
International Classes:
B22D11/06; B22D11/18; G01F23/24; G05D9/12; (IPC1-7): G01F23/24
Domestic Patent References:
| JPS60188818A | 1985-09-26 | |||
| JPS5182660A | 1976-07-20 | |||
| JPS4898870A | 1973-12-14 | |||
| JPS552929A | 1980-01-10 | |||
| JPS5511268B2 | 1980-03-24 | |||
| JP54093012B | ||||
| JP43009508A |
Attorney, Agent or Firm:
Kyozo Yuasa (4 outside)