Ultrasonic transducer kit for bacteria growth monitoring system

In food process industries, sometimes there was food contamination even when it is still in process. Same as other industries when involved with liquid, product contamination which caused by bacteria can affect the quality and company reputation itself. Therefore, the bacteria growth monitoring system which has fast response and reliability is important in helping the industries control process. In this study, a method of monitoring bacteria growth using ultrasonic sensor has been developed based on measuring frequency and impedance measurement of the liquid medium. In developing a fully functional transducer that can be used directly, a transmitter and receiver circuit for the sensor, and the container to place the bacteria was designed. The transducer proves able to differentiate the change in viscosity and able to be use in different temperature.