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A magnetic flowmeter for measuring flow of a conductive fluid includes a flow tube assembly adapted to receive a fluid flow and a coil configured to apply a magnetic field in the fluid flow through the flow tube. An EMF sensor coupled to the flow tube provides an EMF output related to an EMF generat

A magnetic flowmeter for measuring flow of a conductive fluid includes a flow tube assembly adapted to receive a fluid flow and a coil configured to apply a magnetic field in the fluid flow through the flow tube. An EMF sensor coupled to the flow tube provides an EMF output related to an EMF generated in the fluid flow due to the applied magnetic field, velocity of the fluid and noise. A signal processor includes a wavelet transformer that performs a wavelet transformation on the EMF output and provides a decomposition signal related to velocity of the fluid.

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A magnetic flowmeter for measuring flow of a conductive fluid includes a flow tube assembly adapted to receive a fluid flow and a coil configured to apply a magnetic field in the fluid flow through the flow tube. An EMF sensor coupled to the flow tube provides an EMF output related to an EMF generat

A magnetic flowmeter for measuring flow of a conductive fluid includes a flow tube assembly adapted to receive a fluid flow and a coil configured to apply a magnetic field in the fluid flow through the flow tube. An EMF sensor coupled to the flow tube provides an EMF output related to an EMF generated in the fluid flow due to the applied magnetic field, velocity of the fluid and noise. A signal processor includes a wavelet transformer that performs a wavelet transformation on the EMF output and provides a decomposition signal related to velocity of the fluid. ish Telecommunications plc, Innovation & Technology Exhibition: Future Pen Overview & Whitepaper, 1999 (printed Oct. 4, 1999). Smartcode Software, Inc., Company Information & Communication Software for Mobile Professionals, http://www.smartcodesoft.com/products/handhelds/hh_products.html, printed Apr. 18, 1999. nd controlled switch between said output node and said fixed voltage reference potential, and wherein said first and second controlled switches are controlled in accordance with said periodic waveform, so that an output of said comparator modulates the duty cycle of said periodic waveform in accordance with said differential tip-ring voltage produced at said output node by said tip-ring voltage measurement circuit. 6. The circuit according to claim 5, wherein said tip-ring voltage detector is configured as a tip-ring sense rectifier circuit containing complementary transistor pairs coupled to said tip and ring ports, and being intercoupled through a tip-ring voltage sensing resistor, so as to produce said output current as representative of the composite of a rectified differential tip-ring voltage, plus base-emitter voltage drops of a complementary pair of said transistors of said tip-ring sense rectifier circuit, and wherein said differential current extraction circuit is operative to generate said first current component in proportion to the sum of the differential tip-ring voltage plus the base-emitter voltage drops of said complementary pair of transistors of said tip-ring sense rectifier circuit, and said second current component as fractionally proportional to only said base-emitter voltage drops of said complementary pair of transistors of said tip-ring sense rectifier circuit. 7. The circuit according to claim 6, wherein said differential current extraction circuit comprises a first current mirror circuit, coupled to said output node and being operative to generate said first current component, an auxiliary voltage reference circuit, coupled to r