Teledyne TED-60 - Medical application oxygen monitor - Manual (Page 12)

2 Operations 2 Operations 2 Operations 2 Operations 2 Operations
Teledyne Analytical Instruments 2-4
(either plastic, P/N A268, or metal, P/N A283) should be placed into the circuit, and the
above sensor assembly plugged into the tee adapter.
CAUTION: CAUTION: CAUTION: CAUTION: CAUTION: Check the breathing circuit for leaks. Be certain that the circuit downstream Check the breathing circuit for leaks. Be certain that the circuit downstream Check the breathing circuit for leaks. Be certain that the circuit downstream Check the breathing circuit for leaks. Be certain that the circuit downstream Check the breathing circuit for leaks. Be certain that the circuit downstream
of the sensor does not produce any back-pressure or restriction to flow, or
of the sensor does not produce any back-pressure or restriction to flow, or of the sensor does not produce any back-pressure or restriction to flow, or of the sensor does not produce any back-pressure or restriction to flow, or of the sensor does not produce any back-pressure or restriction to flow, or
errors in readings will result.
errors in readings will result. errors in readings will result. errors in readings will result. errors in readings will result.
When measuring for oxygen in confined volumes such as incubators, hoods, etc.,
the flow diverter must be removed from the T-7 sensor so that it does not interfere with
the rapid exchange of gases to and from the sensing surface of the T-7.
CAUTION: CAUTION: CAUTION: CAUTION: CAUTION: Failure to remove the diverter in these application areas will result in a Failure to remove the diverter in these application areas will result in a Failure to remove the diverter in these application areas will result in a Failure to remove the diverter in these application areas will result in a Failure to remove the diverter in these application areas will result in a
marked lowering of the response time of the sensor.
marked lowering of the response time of the sensor. marked lowering of the response time of the sensor. marked lowering of the response time of the sensor. marked lowering of the response time of the sensor.
The T-7 sensor can be placed 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 recon-
nected inside the chamber.
Sterilization Sterilization Sterilization Sterilization Sterilization
CAUTION: CAUTION: CAUTION: CAUTION: CAUTION: The sensor must never be immersed in any sterilizing or other solutions, The sensor must never be immersed in any sterilizing or other solutions, The sensor must never be immersed in any sterilizing or other solutions, The sensor must never be immersed in any sterilizing or other solutions, The sensor must never be immersed in any sterilizing or other solutions,
autoclaved, or subjected to high temperatures or vacuums.
autoclaved, or subjected to high temperatures or vacuums. autoclaved, or subjected to high temperatures or vacuums. autoclaved, or subjected to high temperatures or vacuums. autoclaved, or subjected to high temperatures or vacuums.
The TED 60T itself should never be liquid sterilized or autoclaved. The surface of
the case may be wiped with isopropyl alcohol and/or mild detergent and allowed to dry
in air.
Anesthetic Gases Anesthetic Gases Anesthetic Gases Anesthetic Gases Anesthetic Gases
When using the T-7 sensor in the presence of anesthetic gases such as Halothane,
the oxygen reading may fall (see the table on the following page). The magnitude of this
error will depend upon the level of oxygen and the duration of exposure.
The anesthetic agents listed in the table (Halothane, Enflurane, Isoflurane,
Sevoflurane and Desflurane) were vaporized into a stream of 30% oxygen/70% Nitrous
Oxide, and the resulting drops in oxygen level after an exposure of approximately two
hours were noted.
Exposures in excess of two hours may produce slightly greater errors. The errors
listed are typical for all oxygen sensors such as the T-7. Exposing the sensor to air or
gases that do not contain anesthetic agents for a period of time equal to or greater than
the exposure interval will eliminate the reading error in most cases.