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R17MED sensor so that it does not interfere with the rapid exchange of gases to and from the sensing surface of the sensor.
CAUTION: FAILURE TO REMOVE THE DIVERTER IN THESE APPLICATION AREAS WILL RESULT IN A MARKED LOWERING OF THE RESPONSE TIME OF THE SENSOR.
The R17MED sensor can be placed or hung inside incubators, tents, etc. When it is necessary to thread the cable through a small hole in order to gain access to the inside of a chamber, the cable should be disconnected at the sensor, threaded through the hole, and reconnected inside the chamber.
The LOCK/UNLOCK key can be used to lock out any accidental interference to the front panel keys. The LOCK/UNLOCK key acts as a toggle, pressing LOCK/UNLOCK once renders inactive all keys except the ALARM SILENCE () and BATT TEST keys. Pressing LOCK/UNLOCK a second time unlocks the keypad.
2.3 Gas Sampling
2.3.1 Humidity
Humidity does not directly affect the accuracy of the sensor's measurement. However, when a nebulizer or other device is used to increase moisture levels in gas mixtures, the moisture actually dilutes the mixture. This dilution effect decreases the oxygen concentration.
For example, if an 80% oxygen gas mixture is humidified to saturation at room temperature, the resulting gas mixture will contain only 77.5% oxygen. Your portable oxygen monitor accurately measures decreases in the oxygen concentration due to the dilution effects of moisture added to gas mixtures.
As with all oxygen sensors, excessive condensation on the sensing surface of the R17MED will block the diffusion of oxygen to the sensor, rendering it inoperative. We recommend installing the sensor on the dry side of the breathing circuit at all times.
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