Ultrasonic meter with single transducer

A fluid meter assembly, comprising:

• a measuring channel;
• a stationary medium;
• an electronics assembly including a transducer configured to emit an ultrasonic beam;
• a beam splitter configured to split the ultrasonic beam into a first partial beam and a second partial beam;
• a first set of reflectors configured to direct the first partial beam over a first path that returns to the electronics assembly, wherein the first path includes the stationary medium and a first net distance of a measuring channel;
• and
• a second set of reflectors configured to direct the second partial beam over a second path that returns to the electronics assembly, wherein the second path, includes a second net distance of the measuring channel and the stationary medium;
• wherein the electronics assembly is configured to:
• detect a return of the first partial beam and a return of the second partial beam,
• measure a time difference, between a first time of flight of the first partial beam and a second time of flight of the second partial beam, and
• determine a measurement of a fluid flow through the measuring channel based on the time difference.

An electronics module for a fluid meter, the electronics module comprising:

• a transducer configured to:
• emit an ultrasonic beam into a measuring channel, and
• detect return of a first partial beam and return of a second partial beam of the ultrasonic beam;
• and
• a processor configured to:
• measure a time difference, based on the detecting, between a first time of flight of the first partial beam and a second time of flight of the second partial beam, and
• determine a measurement of a fluid flow through the measuring channel based on the time difference.