Performance Assurance Tests - Checking and Calibrating the Gas Analyzer
4 Testing and Maintenance
67
Figure 12 Span Checking Equipment including Gas Canister and Spray Valve
The procedure to check the gas accuracy is as follows:
1
Set
Breath Detection
to
Disabled
in the General Tab.
2
Select the Patient Data Tab in the VISIA tool so that you can see the waveforms (see Figure 13).
3
Set the upper Gas section to
CO
2
(make sure the unit is set to Vol%) and the lower Gas section to
Agent 1
4
On the M1013A, set
Agent 1
to
DES
for measuring Desflurane
.
On the M1019A, set
Agent 1
to
Auto ID
and make sure Desflurane is detected.
5
Set the pump flow level to
high
.
6
Make sure the pump is on, then connect the calibration gas bottle, the reservoir bag and the sample
line as shown in Figure 12.
7
Wait until the reservoir bag is empty. Wait for another 10 seconds to let the IntelliVue G1/G5
completely evacuate the reservoir bag.
8
Now fill the reservoir bag with gas.
CAUTION
Do not pressurize the reservoir bag.
Do not attempt the span check process if there are any visible leaks in the bag or tubing.
Prevent the bag from emptying before the gas calibration test is complete.
9
Wait until the two gas concentration curves are completely flat as shown in Figure 13.
N O T E
With the M1019A, the “Agent 1 Selection” field shown below, should read “Auto ID”
Gas Bottle
M1662A
Reservoir Bag
M1659A
Flow Regulator
M2211A
Attach
Sample
Tubing
here
