Patient monitor User’s manual
Chapter 14-13
will be about 95%.
If CO
2
values at BTPS are required, the following equation can be used:
where:
EtCO
2
= EtCO
2
value sent from ISA [%]
Pamb = Ambient pressure sent from ISA [kPa]
3.8 = Typical partial pressure of water vapor condensed between patient circuit
and ISA [kPa]
EtCO
2
(BTPS) = EtCO
2
gas concentration at BTPS [%]
O
2
is assumed to be room air calibrated at a humidity level of 0.7% H
2
O.
PHASEIN AB holds the following patents regarding products: SE519766;
SE519779; SE523461; SE524086. Other patents pending.
PHASEIN IRMA™, PHASEIN ISA™, PHASEIN XTP™, Sigma Multigas
Technology™, LEGI™, Nomoline™, IRMA EZ Integrator™, PHASEIN
GasMaster™ and ISA MaintenanceMaster™ are trademarks of PHASEIN AB.
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