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OEM Design Considerations

  • The Micro-Fuel Cell oxygen sensor is designed for operation at atmospheric pressure.


  • Take precautions when operating the sensors at pressures other than atmospheric pressure as the sensor is a partial pressure device.


  • Operation at pressures below 200 millibar (absolute) is not recommended.


  • Electrolyte material in most sensors is a caustic substance. Under certain conditions such as shock, vibration, operation in higher than specified temperatures, material defect, and others, the caustic substance might leak from its containment. While designing the interface material, this remote possibility of sensor leak should be considered and materials that are not attacked by contact with a caustic substance should be chosen as the interface material with the sensor. For example, aluminum will chemically react with the electrolyte and the component built of aluminum may become compromised. Hence, aluminum is not recommended as an interface material.


  • Most OEM Micro-Fuel Cells have a voltage output that exhibits a linear relationship with the oxygen concentration partial pressure. However, design your electronics to accommodate some shift outside the prescribed limits of the sensor. Sensor output would experience some drift over time, which is normal. This drift could be calibrated out.


  • Calibration intervals are difficult to predict, as these are normally application dependent. Consult factory for any assistance on calibration. ·Special sensors are available for use in acidic gases such as carbon dioxide. Continuous exposure of a caustic electrolyte based sensor to carbon dioxide might scuttle the sensor life significantly. Verify the application and confirm the sensor class before adopting the sensors. Please call the factory for assistance in the choice of a sensor.


  • High-speed UFO class sensors require special sample delivery systems. Contact the factory for assistance on using these ultra-fast oxygen sensors.


  • Please have the MSDS for the sensors handy. Facts contained in the material safety data sheets are informative and important.


  • Teledyne assumes no liability from the use of the sensors in medical or life support applications.




   

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