Ultrasonic Flow Converters
ScioSense solutions for ultrasonic flow meters measure water, heat and gas flows. Based on time-to-digital conversion technology for precision time-of-flight measurement, the ultrasonic flow converters operate the analog front end to drive and read transducers, detect the zero crossing in the receive signal and measure the travel time of the ultrasonic bursts.
continue readingUltrasonic Flow Converters
ScioSense solutions for ultrasonic flow meters measure water, heat and gas flows. Based on time-to-digital conversion technology for precision time-of-flight measurement, the ultrasonic flow converters operate the analog front end to drive and read transducers, detect the zero crossing in the receive signal and measure the travel time of the ultrasonic bursts.
Product overview
TDC-GP30-F01 Ultrasonic Flow Converter
TDC-GP30-F01 is a complete ultrasonic flow metering solution, including the flow calculation. It drastically simplifies the design of ultrasonic heat and water meters and is the necessary step for compact energy-saving ultrasonic water meters. The ultra-low current capabilities allow the use of standard 2/3 AA or AA lithium thionyl chloride batteries at 6-8 Hz measuring frequency even in the water meter version. The TDC-GP30-F01 firmware does the linearization and temperature compensation based on spool piece specific calibration data and completes the system-on-chip approach.
TDC-GP22 Ultrasonic Flow Converter
TDC-GP22 is a 2-channel TDC with additional analog elements like extended fire-pulse generator, zero-cross detection and analog switches for simplifying the use in ultrasonic flow meter applications. The addition first-hit detection makes TDC-GP22 suitable for high dynamic applications as ultrasonic water meters. An optimized power managements of the various units brings down the operating current to a few µA at 2Hz measuring rate.
AS6031 Ultrasonic Flow Converter
AS6031 is an ultrasonic flow converter for the next generation of ultrasonic water and heat meters. It is highly integrated and is based on the TDC-GP30 platform. It uses the same high-performant front-end for driving the transducers and processing the receive signal to extract the time of flight information. An additional programmable amplifier allows handling weaker receive amplitudes. Additional features for phase-modulated hit identification give even more robustness to the first hit level detection. The integrated low-power CPU can use 4k of NVRAM and 4k of ROM code to do the flow calculation on chip.
AS6040 Ultrasonic Flow Converter
AS6040 is an ultrasonic flow converter (UFC) solution dedicated to gas meters, but suitable for water meters, too. The system is made of four major blocks: supervisor, frontend, post processing and interface. The supervisor manages all tasks and is the master of the whole system, making the AS6040 autonomous. The front-end integrates a high-voltage driver, an integrated PGA and an offset-stabilized comparator in the receive path, a precision TDC for the time-of-flight measurement, amplitude measurement as well as an RDC unit for temperature measurement. In flow meter mode, the 32-bit CPU in combination with 4k of ROM code and 4k of NVRAM does the post processing for flow calculation. In time conversion mode the CPU is not active and the chip sends the raw time-of-flight data. It communicates to an external microcontroller via SPI interface. By means of the integrated pulse interface the AS6040 can run also in stand-alone mode.
TDC-GP21 Ultrasonic Flow Converter
TDC-GP21 is a 2-channel TDC with additional analog elements like extended fire-pulse generator, zero-cross detection and analog switches for simplifying the use in ultrasonic flow meter applications. An optimized power managements of the various units brings down the operating current to a few µA at 2Hz measuring rate.