Mediana YM6000, Руководство по обслуживанию

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30 Performance Verification
YM6000 Service Manual
To perform the Two Points User Calibration:
a. Select a well ‐ ventilated room to perform the calibration.
b. Let the monitor run for at least 5 minutes prior to calibration.
c. For the “Sample Zero Reference Gas” step, attach the CO
2
scrubber to the
water trap inlet according to the CO
2
scrubber “Directions for Use” (or use a
0% medical ‐ grade gas source).
d. Proceed with the zero gas phase of the calibration as defined by the host
system. Disconnect CO
2
scrubber (or 0% gas source) from the water trap after
the zero gas phase and prior to the next calibration step.
e. For the “Sample Span Reference Gas” phase of the calibration, provide a
medical ‐ grade gas source with a known CO
2
concentration between 8% and
12%, regulated to a pressure between 5 and 7 psi.
f. Introduce a steady stream of CO
2
gas, Set and monitor the flow rate to
approximately 1 liter/minute ±10%). To verify flow, place the bleed line of
the calibration sample line in a glass of water. If bubbles emerge, gas supply
is sufficient. If no bubbles emerge, there is an insufficient supply of gas.
g. Connect a sample line from the sample elbow, or Tee, as shown above, to the
monitor’s water trap inlet. Make sure the bleed line is directed away from
the monitor. Allow the reference gas to flow for at least one minute.
h. Sample the Span Reference Gas.
i. After the Two ‐ Point User Calibration steps have been followed, disconnect
the monitor from the gas supply and test setup.
j. A verification may be performed using the same gas delivery set up. Verify
the observed CO
2
gas reading is within 3 mmHg or 10%, whichever is greater,
of the CO
2
value of the test gas supplied. (If not, refer the user to the
appropriate troubleshooting information.)