Portable Oxygen Analyzer Operation
Teledyne Analytical Instruments 27
Table 2-1: Oxygen Reading Error in a Mixture of Anesthetic Gas
Gas or Vapor Level
(Balance: Mixture of 30% O2 / 70% N2O, except where noted)
Gas or Vapor Test Level Oxygen Reading
Error
Helium 50%, balance O2 0%
Nitrous Oxide 80%, balance O2 0%
Carbon Dioxide 10%, balance O2 0%
Halothane 4% < 1.5% O2 *
Enflurane 5% < 1.5% O2 *
Isoflurane 5% < 1.5% O2 *
Sevoflurane 5% < 1.5% O2 *
Desflurane 15% < 1.5% O2 *
* Errors are approximate and may vary based on exposure times and
concentrations.
These performances meet or exceed the requirements of ISO 7767:
1997 (E).
CAUTION: THE AX300-I SHOULD NOT BE USED IN THE
PRESENCE OF FLAMMABLE ANESTHETICS SUCH
AS DIETHYL ETHER OR CYCLOPROPANE.
CAUTION: THE AX300-I, OXYGEN SENSOR AND ASSOCIATED
HARDWARE ARE NON-STERILE DEVICES. DO NOT
AUTOCLAVE THE INSTRUMENT OR SENSOR, AS
THIS WILL DAMAGE THE EQUIPMENT.
2.3.5.2 CARE AFTER USE IN NITROUS OXIDE
CAUTION: THE R17MED SENSOR SHOULD NOT BE LEFT IN
NITROUS OXIDE MIXTURES ANY LONGER THAN
ABSOLUTELY NECESSARY.
After exposure to nitrous oxide mixtures, the sensor should be left
in 100% oxygen overnight (e.g., left in a breathing circuit that has been
flushed with pure oxygen). If this is not practical, when using the tee,
remove the plastic flow diverter and leave the sensor in room air. If the