Magnetic flowmeter with built-in simulator

Measuring and testing – Volume or rate of flow – By measuring electrical or magnetic properties

Reexamination Certificate

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Reexamination Certificate

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07073393

ABSTRACT:
A magnetic flowmeter transmitter includes a differential amplifier that senses an additive combination of actual flowmeter electrode outputs and simulated electrode outputs. The differential amplifier provides an additive amplifier output. A simulator provides the simulated electrode outputs. The simulator senses the additive amplifier output and provides an error indication when the additive amplifier output is outside a normal range.

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Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration for International Application No. PCT/US2005/038737, filed Oct. 27, 2005. Date of Mailing: Mar. 28, 2006.

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