Performance Verification Testing
Efficia CM Series Service Guide 3-15
Respironics CapnoTrak Sidestream CO
2
Accuracy Test
Sample Flow Rate Accuracy Check
The CapnoTrak module’s flow rate and cell pressure accuracy should be verified every
12 months by direct measurement using a calibrated flow meter.
Note — The test must be performed under load. Use the CapnoTrak Adult Airway
Adapter for proper test verification.
To verify flow rate accuracy:
9
If the observed value is not within the expected value:
• Turn off the gas mixture
• Remove the gas connection from the airway adapter and wait one
minute.
• Repeat steps 7 through 10.
If the observed value is not within the expected value, contact service.
10
If a waveform is present, verify that it appears as a straight line at
approximately 5%.
11
The accuracy check is now complete. Remember to set the CapnoTrak
module settings for units and gas composition back to their previous
settings.
12
Select the Stop Accuracy Check button at any time to stop the test.
Note — Philips employees record this value as SCO
2
:P or SCO
2
:F.
1
Power on the CapnoTrak module.
2
Attach a water filter assembly and adult airway adapter to the sampling
inlet of the CapnoTrak module.
3
Allow the CapnoTrak module to warm up.
4
After warm-up is complete, connect the calibrated flow meter to the
exhaust port of the module.
5
Verify that the flow rate is 50 ml/min ± 10 ml/min. If the measured flow
rate is outside the specified limits, remove the CapnoTrak module from
use and contact service. A mass flow meter is typically used to verify the
flow rate (1.5% full scale accuracy at 100 ml/min).
To Next Page
Loading...
