Teledyne MX300 manual Calibration S

Operation MX300

4.Re-install the battery compartment door. When the unit is first turned on the display will momentarily display all LCD segments. During this period diagnostic tests are being conducted to insure the circuits are functioning correctly. The unit will activate the audible and visual alarms for about 1 second. The LCD will flash continuously indicating the unit is in the unlocked position ready for calibration.

Note: When batteries are first installed or power is lost for any reason the instrument defaults to the calibration mode. All keys except the CAL and ON/OFF keys are inoperable until a successful calibration is achieved.

5.To test the batteries. Press the BATT TEST key once. The battery display, located below the oxygen readout display, should show a bar graph of the remaining life to the batteries. In the case of fresh batteries, it should illuminate all 5 segments from the left to the right end of the bar.

2.1.3Calibration

The MX300 should be calibrated before each use and every 8 hours to maintain accuracy.

Whenever new batteries are installed or removed for any reason, the oxygen monitor defaults to the calibration mode with the LCD display flashing 00.0. Only the CAL and ON/OFF keys are functional at this point. On the MX300 monitor, the alarm set points will also need to be reset after calibration is completed.

Note: For first time and for routine maintenance calibrations, make sure the sensor and sensor cable are installed correctly before attempting to calibrate the instrument

To calibrate the instrument (See Figure 2-7):

1.	Turn the unit on by pressing the ON/OFF key.	Figure 2-7: Calibration S
2.	Check the batteries by pressing the BAT key.

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