Ultrasonic flow meter assembly

A pressure sensor assembly comprising:

• a printed circuit board defining a PCB body, a pressure sensor cut-out formed in the PCB body, the pressure sensor cut-out defining a pressure sensor support extending into the pressure sensor cut-out, the pressure sensor support defining a support island movable relative to the PCB body;
• a pressure sensor coupled to the support island of the printed circuit board;
• and
• a PCB cover engaging the support island to limit movement of the pressure sensor during pressure spikes.

A method of measuring a flow rate of fluid through an ultrasonic flow meter assembly, the method comprising:

• obtaining an ultrasonic flow meter assembly comprising a meter housing and a pressure sensor assembly disposed therein, the pressure sensor assembly comprising a printed circuit board defining a PCB body, a pressure sensor cut-out formed in the PCB body, the pressure sensor cut-out defining a pressure sensor support extending into the pressure sensor cut-out, the pressure sensor support defining a support island movable relative to the PCB body, and a pressure sensor coupled to the support island of the printed circuit board;
• sending a first ultrasonic signal through a flow tube of the ultrasonic flow meter assembly from a first piezoelectric transducer to a second piezoelectric transducer, the first and second piezoelectric transducers disposed within the meter housing of the ultrasonic flow meter assembly;
• determining a flow rate of fluid through a flow channel of the flow tube, which comprises measuring an amount of time that it takes the first ultrasonic signal to travel from the first piezoelectric transducer to the second piezoelectric transducer;
• and
• sensing a pressure of the fluid with the pressure sensor, the pressure sensor extending through a hole formed through the meter housing and into a pressure sensor channel formed in the flow tube, the pressure sensor channel in fluid communication with the flow channel.

A method of manufacturing an ultrasonic flow meter assembly comprising:

• manufacturing a meter housing from a first material and a flow tube from a second material different from the first material, the meter housing comprising a pair of piezo mounts and a pair of reflector mounts, the flow tube defining a flow channel and a pair of openings allowing access to the flow channel;
• positioning a pair of piezoelectric transducers on each of the piezo mounts;
• receiving each of the reflector mounts through one of the tube openings;
• and
• sandwiching a pair of reflectors between each of the reflector mounts and a pair of support ledges of the flow tube, each of the support ledges disposed within the flow channel.