Beginning from preliminary design constraints and functional requirements, a custom Flow-Rate And Conductivity Transducer (FRACT) was conceived, designed, and built for use in situ aboard the spinning rotor of the Centrifugal Membrane and Density Separation (CMOS) Research centrifuge. It was subjected to rigorous laboratory simulation of the centrifuge environment for structural and operational validation. The original prototype underwent incremental development, was in stalled on the newly completed centrifuge rotor, and was calibrated and commissioned. It performs liquid flow-rate measurement in the 1- 20 mL/min range to better than 2% accuracy and precision. Conductivity measurement is attainable to similar accuracy and 0.3% precision across two ranges:​ 0- 340 µS/cm and 0.44-5 mS/cm, corrected for temperature. Operation has been proven to rotor speeds imposing 3100 G centripetal acceleration upon the device. A suite of control and data acquisition "Virtual Instrumentation" software was also developed to complete the measurement system.