Teledyne MX300-I manual Sensor Maintenance, Calibration

Service Manual MX300-I

DO: Recalibrate after replacing batteries.

The MX300-I instrument incorporates a battery test feature that provides the approximate amount of useful life remaining on the set of batteries. Excessive alarm activation will wear down the battery faster than usual.

The minimum detectable change in battery voltage corresponds to an increment of about 50 hours, meaning that the battery voltage reading may not change for several hours at a time.

If the monitor is not used for a period of 30 days or more, the batteries should be removed prior to storage.

3.4 Sensor Maintenance

DO: check the sensor for damage or leaks before use.

DO: recalibrate after replacing the sensor.

DON’T: immerse the R17MED sensor in liquid. DON’T autoclave the R17MED sensor. DON’T: open or try to repair the sensor.

Before every use, the sensor, cable and connections should be checked. Check the sensor for leaks and condensation. Check the cable for splitting or cracked insulation. Make sure the connections are tight and dry.

In the event that the sensor has been damaged. Contact your locale Representative or Teledyne to receive a copy of the Material Safety Data Sheet.

3.5 Calibration

Incorrect readings can often traced to improper calibration. The MX300-I should be calibrated before each use and every 8 hours to maintain accuracy. It must be calibrated whenever new batteries are installed. Calibration using methods other than described below can lead to improper operation and are discouraged.

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 (I/O) keys are

Teledyne Analytical Instruments 34