Automatic Calibration To Known Concentration - CareFusion Bird Sentry User Manual

Chapter 2: Operating Procedures
Automatic Calibration to Room Air
The Bird Sentry blender can be quickly calibrated to room air (20.9%) using a quick shortcut command.
This function saves time by setting the calibration value to 20.9% without scrolling the display. To use
this function:
1. Place the external probe in room air.
2. Press the LOCK key to unlock the keypad.
3. Press and hold down the CALIBRATE key. When the 96 icon starts to flash, press the DOWN arrow
key to set the calibration value to 20.9%.
4. Release both the CALIBRATE key and the DOWN arrow key.
The unit will automatically enter the LOCKED condition and return to normal operation.
Automatic Calibration to Know n Concentration
The Bird Sentry blender can be quickly calibrated to the previous calibration value if a known, reliable
standard is used for successive calibrations. This quick key function saves times by setting the
calibration value to the last calibration value used, without scrolling the display. To use this function;
1. Introduce the previously used oxygen % standard to the sensor.
2. Press the LOCK key to unlock the keypad.
3. Press and hold down the CALIBRATE KEY. When the 96 icon starts to flash, press the arrow key to
set the calibration value to the primary setting.
4. Release both the CALIBRATE key and the DOWN arrow key.
The unit will automatically enter the LOCKED condition and return to normal operation.
Caution!
Do not use humidified oxygen to calibrate this system. If calibrated with humidified
oxygen, subsequent oxygen readings will be higher than the true oxygen level.
Dropping or severely jarring the sensor after calibration may shift the calibration point
enough to require recalibration.
Variations in inlet gas source pressures will alter the accuracy of the oxygen readings of the
Bird Sentry blender.
Using the Bird Sentry blender to analyze and monitor oxygen concentrations other than at
the sensor port of the unit will require recalibration of the sensor.
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Bird Sentry™ Blender
L1383 Rev. D