Back to results
US 5,469,746 AGranted
Electromagnetic flow meter
AssigneeHitachi, Ltd.
InventorsMasao Fukunaga, Yutaka Sakurai, Kouji Saito, Tamio Ishihara
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeHitachi, Ltd.
InventorsMasao Fukunaga, Yutaka Sakurai, Kouji Saito, Tamio Ishihara
Estimating the term…
An electromagnetic flow meter for industries includes a transducer and a signal processor provided separately from the transducer. The transducer having an exciting circuit, an amplifying and calculating part and a transmitting part outputs an analog flow rate signal and digital signals which are superimposed to the an analog flow rate signal to the signal processor. The analog signal sent to the signal processor is passed through the signal processor without receiving any signal processing and the digital signals are sent into the transducer or taken into the signal processor through alternating current coupling means. The data transmission is diagnosed by checking the conformity between the data stored in the signal sending part and the received data. Data set in a data setting part provided in the signal processor are sent to the transducer through a transmitting cable in which the flow rate data are also transmitted.
An electromagnetic flow meter generating signals proportional to flow rate of fluid having a conduit inside which the fluid flows, a magnetic circuit for generating the magnetic field at right angles to the longitudinal direction of the fluid flow and a pair of electrodes provided at right angles to the flow directions of the fluid flow and to the direction of the magnetic field, said electromagnetic flow meter comprising:
An electromagnetic flow meter having a conduit in which fluid flows, an exciting means for adding a magnetic field to said conduit and a transducer including a pair of electrodes for detecting electromotive force generated in said fluid, and outputting measurement data about said fluid to a signal processor via a signal transmission line connecting said transducer and said signal processor, said electromagnetic flow meter comprising:
An electromagnetic flow meter having a conduit in which fluid flows, an exciting means for adding a magnetic field to said conduit and a transducer including a pair of electrodes for detecting electromotive force generated in said fluid, and outputting measurement data about said fluid to a signal processor via a signal transmission line connecting said transducer and said signal processor, said electromagnetic flow meter comprising:
Dependencies are inferred from the claim text.