Abstract: A flowmeter including a body having a wall configured to communicate a fluid between an inlet and an outlet, and an ultrasonic transducer configured to transmit an ultrasonic signal to another ultrasonic transducer along a path in the body. A plurality of reflectors are disposed in the wall and are configured to reflect the ultrasonic signal multiple times across the body along the path in the fluid flowing through the housing. A processor is coupled to the ultrasonic transducers and is configured to determine a time the ultrasonic signal takes to travel the path and determine a flow rate of the fluid as a function of a determined time.

Abstract: A fluid quality detector for measuring total dissolved solids such as in water system of a home. The detector includes a body configured to communicate a fluid between an inlet and an outlet, and a probe having a pair of electrodes configured to communicate with the fluid. A circuit is coupled to the probe and configured to determine quality of the fluid as it communicates between the inlet and the outlet. The circuit is configured to apply a voltage waveform between the two electrodes to the fluid and switch a voltage polarity of the voltage waveform to reverse voltage polarity at the electrodes and reduce ions from migrating between the electrodes.