Heyer iTernIS ADV, Operator'S Manual

Page: 88 / 218

Menu | iTernIS ADV
7. 14
Fig. 7-12 OXYGEN
SENSOR CALIBRATION
window.
Three actions can be carried out from this window.
• Sensor calibration by simply accepting the first line on this menu.
• Disabling the sensor, accepting the second option (when the sensor breaks or
wears out during ventilation). In this case, the O
2
value being monitored is repla-
ced by two hyphens to indicate that it is not active.
• Finally, if the sensor is disabled, it can be reactivated from the first line of the Ca -
librate/Enable menu.
This function recalibrates the breathing circuit (patient circuit) without the equip-
ment having to be turned off. The calibration must not be performed with the patient
connected to the circuit. The Y piece must be disconnected and the free end of
this connector must be covered to begin calibration. The screens displayed by the
ventilator to guide the calibration are identical to those indicated in the
Start-up and
Initial calibration
chapter.
WARNING
• Do NOT recalibrate the respiratory circuit if
the patient is connected to it. Otherwise, ha -
zardous situations may arise for the patient.
All capnography related information has been included in the
Capnography
chapter.
From here, it is possible to change the units of pressure used in the readings and
graphs involved in this measurement. The available units are cmH
2
O, mbar, and
hPa. The numeric values are not changed, since the ratios between these units is
approximately 1:1.
The flow and volume of the gas driven through and of the gas measured in the exha -
lation vary, depending on the atmospheric pressure (which is affected by the altitude)
of the location where the ventilator is operating. For the flows and volumes to use the
altitude of the location as point of reference, a correction must be made on the equip-
ment current value, entering the average value of the ambient pressure. Following the
sequence
[Menu]>>Tools>>Settings>>Mean ambient pressure opens a window to
enter the mean ambient pressure information for the place where the ventilator is loca-
ted. The change is made in the highlighted field (mbar) and the torr value is automati -
cally updated. The initial value for this parameter appears in Fig. 7-13.
7.6.3.2 | Breathing circuit
calibration
7.6.3.3 | Capnography
7.6.4.1 | Pressure units
7.6.4.2| Mean ambient pressure
7.6.4 | Settings