Fluke Biomedical VT Plus HF - Manual (Page 49)

Connection and Setup
Utilities
2
2-21
4. Press the ZERO soft key.
5. Press OK to start 21 % O
2
calibration. Allow the full 2-minute period. Do not press
SKIP .
6. Verify that the O2 reading is 20.9 ± 0.1 %.
7. Press the CAL soft key.
8. Apply 10 lpm of dry 100 % oxygen to the high-flow inlet or exhaust.
9. Press
OK to start 100 % O2 calibration. Allow the full 2-minute period. Do not press
SKIP .
10. Verify that the O
2
reading is 100 ± 0.1 %.
11. Press the BACK soft key to return to the Utilities menu.
Note
If the oxygen sensor cannot be calibrated, it may need to be replaced. Refer
to Maintenance, Service, and Calibration: Oxygen Sensor Replacement.
System Diagnostics
These functions are for the technical service personnel to use while repairing the
Analyzer. They include Zero All , AD Diagnostics , and Signal Diagnostics .
Linearization
This option is most useful to technical service personnel repairing the Analyzer. There is
no input, but the calibration data for each sensor is stored and displayed, so a checksum
test can be performed to make sure the sensor data is still valid.
To check linearization data:
1. From the
Utilities menu, highlight Linearization . The Linearizaion Info screen
displays:
fec036.bmp
2. Press the BACK soft key to return to the Utilities menu.