Gasboard-7500HA-RH Ultrasonic Flow Sensor for Medical Device Applications

The Gasboard-7500HA-RH is an ultrasonic oxygen gas sensor designed to measure oxygen concentration and flow. The
e Gasboard-7500HA-RH is suitable for oxygen ventilator, high-flow nasal cannula oxygen therapy, positive airway pressure ventilation, and anesthesia machines.

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  • Ultrasonic measurement technology can measure oxygen concentration and flow up to 5 liters per minute
  • Time of Flight measurement principle ensures continuous measurement free of drift and removes the need for regular calibration
  • Excellent measurement stability, high accuracy and fast response in all medical device application environments
  • Full scale temperature and humidity compensation
  • Optimized Price-Performance Ratio



Detection Principle Ultrasonic Technology
Detection Range 0~5L/min (Note 1)
Detection Accuracy ±3% or ±0.06L/min (Condition:5~45 ℃)
Resolution 0.01L/min
Response Time <0.3S
Work Condition -20~60℃;0~95% RH (Non-condensing)
Storage Condition -20~60℃;0~95%RH (Non-condensing)
Work Voltage DC 4.75-12.6V, Ripple Wave <50mV
Average Work Current <35mA
Communication Interface UART_TTL (3.3V)
Product Size W80*H22*D25 mm
Life span ≥5 Years


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