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Comparison between ultrasonic and electro-chemical oxygen sensor in ventilator application

Comparison between ultrasonic and electro-chemical oxygen sensor in ventilator application

Product catalog summary

Introduction to Oxygen Sensors:
The document introduces two types of oxygen sensors used in ventilator applications: ultrasonic and electro-chemical. The electrochemical sensor operates by measuring the current generated when oxygen dissolves in an electrolytic solution, which is proportional to the oxygen concentration. The ultrasonic sensor uses flow detection theory, where the velocity of ultrasonic waves in a fluid is influenced by the fluid's velocity, allowing for the measurement of flow rate and concentration based on sound speed variations in different gas compositions.

Advantages and Disadvantages:

Ultrasonic Sensor: Advantages include stability, no need for calibration, long lifetime, and the ability to measure both concentration and flow. However, it is limited to binary gases and can be affected by moisture.
Electrochemical Sensor: It has low power consumption and high sensitivity but suffers from a short lifespan (approximately 2 years), high cost, and large drift. It only measures gas concentration.

Test Report:
The document includes a test report comparing the ultrasonic sensor (Gasboard7500C) and the electrochemical sensor (PSR-917-M).

Conclusion:
The conclusion highlights the advantages of the ultrasonic oxygen sensor, such as no need for routine calibration, long lifespan, high stability, and the capability to measure both oxygen concentration and flow simultaneously.

Catalog excerpts

Comparison between ultrasonic and electro-chemical oxygen sensor in ventilator application

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Introduction of ultrasonic and electro-chemical oxygen sensor Advantages comparison between ultrasonic and electrochemical sensor Test report between ultrasonic (Gasboard7500C) and electrochemical sensor ( PSR-917-M)

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Comparison between ultrasonic and electro-chemical oxygen sensor in ventilator application-3

Introduction of ultrasonic and electro-chemical oxygen sensor Technical principle

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Comparison between ultrasonic and electro-chemical oxygen sensor in ventilator application-5

IP Test report between ultrasonic (Gasboard7500C) and Cubic electrochemical sensor ( PSR-917-M)

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Comparison between ultrasonic and electro-chemical oxygen sensor in ventilator application-6

Two con hail ration of the change in reading over time with (>asboard75()0(. and Analytical PSR-9I7-M ( uvlomiT rlight Medical Medical Ventilator Test environment : 26'C FIovm llVmin 1 I cst purpose: To configurate1 he change in reading over lime of ultrasonic oss^cn sensor dinar d .'^IKK and Analytical oex^cn sensor PSR-917-M 2. Test equipment : standard pure oxygen cylinder, test kit. Ciasboard7500C and PSR-9I7-M. 3. Test condition and method; (2) Inlet air first, then open the oxvgcn gas circuit to the sensors and see the reading in 20scconds

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Comparison between ultrasonic and electro-chemical oxygen sensor in ventilator application-7

In conclusion, from above test report and comparison, ultrasonic oxygen sensor has advantages of no need routine calibration, long life span, high stability and oxygen concentration and flow measurement together.

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