Home / Products / Flow Sensing / Ultrasonic Flow Converters / AS6031F1 Ultrasonic Flow Converter

Features

  • AS6031 hardware platform
  • Flow measurement with full linearization and calibration, either using a standard piece-wise linear correction or ScioSense proprietary method.
  • Temperature measurement for cold water meters derived from speed of sound (up to 60 °C).
  • Temperature measurement using external resistive sensors
  • Optional internal chip temperature measurement.
  • Zero flow detection
  • Full communication (input and output) over SPI. Flow volume and error can be provided also over standard two-wire pulse interface.
  • Prepared for two-point calibration (zero flow and high flow @ room temperature) in series production.
  • First-hit level (FHL) regulation, various modes.
  • Phase shift detection and phase jump correction for ToF
  • Bubble detection and error detection included to recognize wrong measurements.
  • Entry points for custom code.

Benefits

  • Fast time to market.
  • Lowest power due to optimized CPU and reduced communication with the external µP
  • High flexibility in the choice of the external µP
  • Split of flow part from other functional blocks of a meter
  • Flow and volume are available as digital data via SPI

Product properties

Analog Frontend
Yes, with PGA
First Wave Detection
Yes, split burst
Amplitude Measurement
Yes
Number of Hits
31
Resolution TDC [ps]
22
Operating Supply Range
2.5 to 3.6
Interface
SPI, Pulse, 2-wire master
CPU
32-bit
Memory
4k NVRAM, 4k ROM
GPIO
5
Ambient Temperature Range [°C]
-25 to +85
Package
QFN48

Applications

  • Non-invasive cold water meter
  • Non-invasive hot water meter