Teledyne MX300 - Manual (Page 25)

Portable Oxygen Monitor Operating Instructions
Teledyne Analytical Instruments 17
2.2 Operation
2.2.1 Procedure
Note: Prior to every use, always test the batteries, check the sensor for any leaks or
damage, check the calibration and the alarm set points.
The MX300 Monitor can be used to measure a gas mixture for oxygen in
two basic modes:
 In the inhalation side of breathing system upstream of any antibac-
terial filters, humidifiers and other such medicating devices.
 In confined volumes such as in incubators or tents.
When analyzing for oxygen in breathing systems, the flow diverter must be
used. The diverter should be screwed onto the threaded front end of the
R17MED sensor. A tee adapter (plastic, P/N A268, or metal, P/N A283) should
be placed into the breathing loop, and the above sensor assembly plugged into
the tee adapter. See Figure 2-3.
CAUTION: CHECK THE BREATHING SYSTEM FOR LEAKS. BE CERTAIN THAT
THE SYSTEM DOWNSTREAM OF THE SENSOR DOES NOT PRO-
DUCE ANY BACKPRESSURE OR RESTRICTION TO FLOW. ER-
RORS IN READINGS WILL RESULT IF THIS IS NOT FOLLOWED.
THE OXYGEN SENSOR IS A NON-STERILE DEVICE AND SHOULD
BE USED IN CONJUCTION WITH AN ANTI-BACTERIAL FILTER. AL-
WAYS INSTALL THE SENSOR ON THE INSPIRED LINE AHEAD OF
FILTERS, HUMIDIFIERS AND MEDICATING DEVICES. NEVER IN-
STALL THE SENSOR IN A LOCATION THAT WILL EXPOSE THE
SENSOR TO PATIENTS’ EXHALED BREATH OR SECRETIONS UN-
LESS YOU INTEND TO DISPOSE OF THE SENSOR AND FLOW
ADAPTER AFTER USE.
When monitoring for oxygen in confined volumes such as incubators,
hoods, etc., the flow diverter must be removed from the R17MED sensor so that
it does not interfere with the rapid exchange of gases to and from the sensing sur-
face of the sensor. Failure to remove the diverter in these applications may ad-
versely affect 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.