Thermistor Flow Sensor

Comprised of three or four heat sensitive elements, respiration flow sensors are placed under the patient’s nostrils and produce a signal that is directly proportional to the temperature changes of air inhaled and exhaled during respiration.  SleepSense thermal airflow sensors generate a small analog electrical voltage that provides a clear, reliable indication of respiration airflow.  These sensors should be connected to the system’s thermal-flow input.