Koninklijke Philips Corporation N.v.

Alain-Jean Delache

Steven Adam Kimmel

A device () that uses a temperature coefficient pre-calibrated for the device for measuring a flow within the device. The device includes a differential pressure sensor () configured to generate a differential pressure signal responsive to a differential pressure within a flow path () and a temperature sensor configured to sense a temperature near the differential pressure sensor. A differential amplifier amplifies differential pressure signals from the differential pressure sensor. A processor receives signals from the differential pressure sensor, amplified signals from the differential amplifier, and signals from the temperature sensor. The amplified signals are corrected based upon at least a predetermined temperature coefficient, and the processor calculates a flow rate based on the corrected representation of the differential pressure.

Flow sensing device with temperature compensation

An impeller assembly including a motor that rotationally drives an impeller is balanced. The impeller assembly is balanced without physically indexing the impeller to determine the rotational position of the impeller while impeller is rotated. For example, the system does not employ an optical sensor, a magnetic sensor (e.g., a Hall sensor), a mechanical indexing sensor, and/or other sensors that physically index the impeller.

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Nice, France

Alain-Jean Delache