Philips IntelliVue MX800 - Calibrating the tcGas Transducer

15 Monitoring tcGas
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Disabling the tcGas Site Timer
Depending on your monitor's configuration, you might be able to disable the site timer. Remember,
this means that the transducer heats indefinitely while on a patient.
1 In Setup tcGas menu, select Site Timer and switch this to Disabled.
2 Select the Confirm pop-up key.
Setting the tcGas Barometric Pressure
Altitude and barometric pressure affect tcGas values. The monitor derives barometric pressure from
its altitude setting. If you want to set the true barometric pressure you must do this before starting a
calibration - changes after calibration do not influence tcGas values. The monitor remembers this
pressure setting until you enter a new one.
1 In the Setup tcGas menu, select Ambient Pressure.
2 Enter the current barometric pressure reading indicated by your barometer.
3 Select the Confirm pop-up key.
Remembraning the tcGas Transducer
Follow the instructions supplied with the transducer.
New/Dried Out Transducers
Remembrane all new or dried out transducers twice before using. After the first remembraning, unplug
the transducer from the module and leave it for 24 hours with the cap on. Remembrane again before
calibrating.
Storing tcGas Transducers
If you need to store a sensor for more than 24 hours, protect it for up to 28 days by putting two drops
of electrolyte solution into the cap. Screw the cap on the sensor. Remembrane if it dries out or after 28
days.
Calibrating the tcGas Transducer
You can use either a Philips (15210B) or a Radiometer TCC3 calibration unit and a gas cylinder whose
pressure indicator is above the 'out-of-gas' zone (black on 15210B, red on TCC3). To maintain
accuracy, it is recommended to calibrate the transducer every four hours, even if the monitor does not
prompt you to do so. You MUST calibrate when:
• you remembrane the transducer
• you change the transducer heat setting
• you doubt the measurement accuracy
• you start a new monitoring period or use a new site
• the monitor displays the
Calibration required INOP message.