发明名称 |
ELECTROMAGNETIC FLOW METER |
摘要 |
An apparatus in which a magnetic field is generated by an excitation coil provided in the outside of a conduit and electromotive force generated in electrodes attached on the conduit is detected to thereby measure a flow rate of a fluid flowing in the conduit, in which the conduit is made thinner in a manner so that a ratio of the axial length of the conduit to the inside diameter of the conduit is set to a value within a range of from 0.2 to 1.0, and in which correction data previously analyzed in accordance with magnetic permeability and inside surface conductivity of a mate piping to which the conduit is to be connected are stored so that a detection signal from the electrodes is corrected on the basis of the correction data to thereby measure the flow rate of the fluid flowing in the conduit.
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申请公布号 |
US5207105(A) |
申请公布日期 |
1993.05.04 |
申请号 |
US19900538092 |
申请日期 |
1990.06.14 |
申请人 |
HITACHI, LTD. |
发明人 |
FUKUNAGA, MASAO;UEMATSU, IKUO;IKEGAWA, MASAHIRO;KAIHO, MASAYUKI |
分类号 |
G01F1/58;G01F1/60;G01F25/00 |
主分类号 |
G01F1/58 |
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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