Use
r’s
Manual of OMNI Express Patient Monitor
- 57
037.007.0001 Rev.2
Only change to nitrogen (N
2
) when performing a zero on 100% N
2
gas.
This is provided for use in a laboratory environment.
ADVANCED SETUP
Select
“
ADVANCED SETUP
” item to call up the related menu:
EtCO
2
Setup
Gas
Compensations
Oxygen
BARO
Advanced Setup
Gas Temp
Balance Gas
Anesthetic
Figure 23: Tree Diagram for EtCO
2
Advanced Setup
SET GAS COMPENSATIONS
The measurement of CO
2
is affected by temperature, pressure, and gas compensations.
The barometric pressure as well as the presence of O
2
, N
2
O, helium, and anesthetic
agents in the gas mixture needs to be compensated for by the CO
2
module in order to
achieve its stated accuracy. The instrument settings for these parameters should be set
when initially connecting to the CO
2
module and whenever there is a change in the
conditions of the patient
’s airway.
In the CO
2
module, the temperature of the gas in the airway also effects the CO
2
measurement. It is necessary to adjust the instrument setting for the gas temperature to
achieve the maximum accuracy for the CO
2
module.
OXYGEN COMPENSATION
The setting range is 0
～
100 %. The factory setting is 16 %.
BALANCE GAS
The options are room air, N
2
O and Helium items to choose.
ANESTHETIC AGENT
Use this setting to compensate for the gas mixture administered to the patient. The
anesthetic agent is ignored when the balance gas is set to helium.
The setting range is 0.0
～
20.0 %. The factory setting is 0.0 %.
BAROMETRIC PRESSURE
This setting is used to set the current barometric pressure.
The setting range is 400
～
850 mmHg. The factory setting is 760 mmHg.
GAS TEMPERATURE
This setting is used to set the temperature of the gas mixture. This setting is useful when
bench testing using static gasses where the temperature is often room temperature or
below.
The setting range is 0
～
50
℃
. The factory setting is 35
℃
.
[NOTE]
At 700mmHg of pressure, the correct CO
2
value is 35.0 mmHg.
