Title:
ELECTROMAGNETIC FLOWMETER
Document Type and Number:
Japanese Patent JPS62240817
Kind Code:
A
Abstract:
An electromagnetic flowmeter of the type in which a magnetic field is applied across a fluid the flow of which is to be monitored, the field being applied in the form of pulses in forward and reverse directions, in which induced voltage pulses are taken from electrodes (2,2′) in contact with the fluid, and in which the induced voltage pulses are processed to provide a flow-representing output in the form of a frequency, the flowmeter comprising means to derive first and second signal levels from the amplitudes of the induced voltage pulses corresponding respectively to the forward and reverse directions of magnetic field, and integrator means (19) arranged to receive the first and second signal levels alternately as an input, and to integrate in one direction in response to the first signal level until the output of the integrator means (19) reaches a first reference level and to integrate in the opposite direction in response to the second signal level until the output of the integrator means (19) reaches a second reference level, the frequency output being derived, in use, from the output of the integrator means (19).
Inventors:
MAIKERU TEIREI
Application Number:
JP28054386A
Publication Date:
October 21, 1987
Filing Date:
November 25, 1986
Export Citation:
Assignee:
DANFOSS AS
International Classes:
G01F1/60; (IPC1-7): G01F1/60
Attorney, Agent or Firm:
Minoru Nakamura
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