be performed when the geographic elevation at which the product is being used changes by more than 500 feet.
The sensor is best calibrated while mounted in the industry standard, 15mm I.D. “T” adapter. As in normal operation, the oxygen sensor responds best when installed in a vertical position with the sensor facing down.
In addition, calibration is recommended if the user is unsure when the last calibration procedure was performed or if the measurement value displayed is in question.
It is best to calibrate the MAXO2 Monitor to a known documented oxygen concentration at a pressure and flow similar to your clinical application. Calibrating the MAXO2 at lower concentrations with a known oxygen value is also acceptable and may provide additional accuracy if the calibration gas is closer to the environment in which the MAXO2 will be used. A “known” value of oxygen is defined as an oxygen source which has a traceable certificate and / or USP certification.
Note: Before beginning calibration the
2.2.2 To Calibrate the MAXO2 Monitor
1)Place the external probe in a stream of gas of known oxygen concentration. Expose the sensor to the calibration gas at a regulated pressure and flow.
2)Using the ON/OFF key, make sure the unit is in the power on mode.
3)Allow the oxygen reading to stabilize. This will normally take about 30 seconds or more.
4)Press the LOCK/UNLOCK key to unlock the keypad. The "LOCKED" icon will disappear from the display.
5)Press the CALIBRATE key on the keypad. The word "CAL" will appear on the display for about 1 second and then the "%" sign will start to flash.
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