Mainstream Co Verification Procedure - Welch Allyn Propaq Encore Service Manual

Functional Verification
Mainstream CO Verification Procedure
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This procedure verifies the accuracy of the Encore's mainstream CO
verification test results exceed specification limits, calibration as instructed in Section 3 MAY or
MAY NOT be required—there are multiple possible sources of errors in testing as listed in the
table on page 41.
1. Connect a MCO sensor with airway adapter to the Encore MCO
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2. Turn on the Encore. Press ALARM SUSPEND/RESUME to disable the alarms.
3. Press SETUP > MORE > MORE (>SERVICE > YES > MORE > MORE > SETTINGS, for software
versions 2.0 and greater) and then set the CO
(mmHg).
4. Allow the monitor and sensor to warm up for at least 15 minutes.
Note
Possible errors may be caused if the area has high background CO
has been forced outside of the airway adapter and into the sensor itself. To reduce
the background CO
technician should be the only person present. If CO
sensor, allow 24 to 48 hours for the CO
5. After 15 minutes, check that the CO
1 mmHg, ±1 mmHg.
6. Install a rubber stopper in each end of the sensor airway adapter. (Refer to the Required
Equipment list on on page 22.)
7. Connect the CO gas source through the hole in the stopper on one end of the airway adapter.
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Leave the other end open.
Note
Before performing the following steps, convert the percentage of the gas source to
partial pressure (mmHg) according to the procedures in Mainstream CO
Verification Preparation on page 36.
8. Introduce a flow of test CO
9. For test gas calculated partial pressure values of 30 mmHg or less, check the CO
the Encore display to be within 3 mmHg.
10. For test gas calculated partial pressure values greater than 30 mmHg, check the CO
the Encore display to be within ±10% of the partial pressure value.
Note
If CO test results are out of specification limits, check the table on page 41 for
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possible error sources. Always verify the test setup to minimize errors.
11. Disconnect the test gas source and other test equipment.
12. Disconnect the CO sensor from the monitor.
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measurement units to millimeters of mercury
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level, the area should be well ventilated and, preferably, the
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to dissipate.
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reading (of ambient room air) on the Encore display is
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at a rate of 60 to 200 ml/min into the sensor airway adapter.
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Section 2-Functional Verification
(MCO measuring system. If
)
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input connector.
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levels or if CO
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has been forced into the
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reading on
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reading on
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Propaq Encore Service Manual
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