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Maxim's MAXREFDES70# accurate, cost-effective, ultrasonic flow meter keys a transformation in liquid and gas flow measurement

Critical for revenue collection, leak detection, and conservation of critical natural resources, flow meters lie at the heart of utility and industrial distribution systems of water, gas, and heat. Mechanical flow meters, currently the most prevalent meter style, use moving parts to measure the velocity of a fluid in a pipe. These moving parts are subject to wear and lose accuracy over time, often requiring replacement within 10 years. The MAXREFDES70# ultrasonic time-of-flight flow (TOF) meter by Maxim Integrated sends and receives ultrasound waves between piezoelectric transducers in both the upstream and downstream directions in the pipe. By measuring the TOF difference between the upstream and downstream wave travels, utilizing sophisticated digital signal processing techniques, a very accurate flow rate can be calculated.

The MAX35101 is the center of the heat/flow meter system. The MAX35101 integrates all the functions required for automatic TOF measurements, including the ultrasound pulse launching and detecting, TOF calculation, temperature measurement, and a real-time clock (RTC). The MAX35101 can work in various configurable automatic event-timing modes, requiring very minimal interactivity from a host microcontroller, thus reducing the total power consumption of the system.

The MAXREFDES70# is a complete meter, simply attach hose fittings to the system and begin measurement.

Features        
  • High precision
  • Large flow rate range
  • Ultra-low power consumption (20 years of battery life)
  • Compact and low cost
Applications
  • Ultrasonic heat meters
  • Ultrasonic cooling meters
  • Ultrasonic flow meters

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