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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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