The time-of-flight measurement involved in ultrasonic flow sensors requires a time-to-digital converter to make time interval measurements in the range of 1 nanosecond down to the picosecond range. The TDC-GP30 system-on-chip (SoC) ultrasonic flow converter delivers resolution of <0.5 l/hr (0.13 gal/hr) with a 20-year AA-size Li-ion battery life.
Capable of ultrasonic measurement frequencies up to 4 MHz, the SoC includes a 32-bit microprocessor in that provides calibrated flow and temperature data via firmware with UART, SPI or pulse output. Tartgeted applications include fluid-flow applications in HVAC, chemical/medical dosing systems and infusion pumps, as well as gas, heat and water meters.
For more information about the TDC-GP30, available in North America through Precision Measurement Technologies, click here.