Welch Allyn Connex Vital Signs Monitor 6000 Series Service Manual page 204

198 Functional verification and calibration
you verify whether the module is calibrated at the time of the calibration check.
Calibrate launches the calibration process.
Passing a calibration check could be misleading, especially if calibration is due in the near
future. A sensor that is calibrated today might not remain calibrated over the next 4000
operating hours. Check calibration at the intervals recommended here to ensure proper
calibration. Initially calibrate the CO2 sensor after 1,200 operating hours, then once a
year or after 4,000 operating hours, whichever comes first. The initial calibration should
not occur before 720 hours of use unless a calibration check shows the sensor to be out
of calibration.
Note
The calibration kit provides the appropriate gas mix (5% CO2, 21% O2, Balance N2) with
an accuracy of 0.03% volume percent. The gas canister has a calibrated orifice to allow
the gas to flow at approximately 1 liter per minute, the flow rate necessary to perform
the calibration.
Before you begin, verify the time and date setting on the device is correct to correctly
calculate when the next calibration is due. Then connect the CO2 calibration kit to the
device as shown in the diagram:
No.
1
1. Power on the device.
2. Touch the Settings tab.
3. Touch the Advanced tab.
4. Enter the configured Advanced settings code and touch OK.
5. Touch the Parameters tab.
6. Touch the etCO2 tab.
7. Scroll to the bottom of the screen and touch Check calibration or Calibrate.
8. Enter the calibrated CO2 concentration to the nearest tenth of a percent.
9. Open the gas supply and touch Start.
10. When prompted, close the gas supply.
If the calibration or calibration check is successful,
• Touch OK to complete the calibration process.
• Disconnect the calibration line from the device.
If you perform the initial calibration before 720 hours of use, the module
will reset to require its next calibration after only 1200 hours rather than
4000 hours.
1
Item
CO2 calibration kit
®
Welch Allyn Connex Vital Signs Monitor 6000 Series™
2
No. Item
2 Device