Page 10-24 LTV
®
Series ventilator Operator’s Manual
p/n 10664, Rev. Y
Bi-directional Flow Transducer Differential Autozero
Use this item to view the Bi-directional Flow Transducer Differential Autozero results and schedule
Autozeros to be run.
To view the Bi-directional Flow Transducer Differential Autozero results:
1) The previous results, FDb xxxx P, are displayed. If the results are displayed as FDb xxxx -, the
Bi-directional Flow Transducer is not installed on your unit. The final P indicates the previous zero
results were within the required tolerance and the previous autozero passed. If a final F is
displayed, the previous zero results were outside the required tolerance and the autozero failed.
An asterisk indicates that an autozero is scheduled for the next breath.
2) Turn the Set Value knob to display the EXIT option.
3) Push the Select button.
To schedule the Bi-directional Flow Transducer Differential Autozero:
1) The previous results, FDb xxxx P, are displayed.
2) Push the Select button. An asterisk appears, the pass / fail indicator is removed from the display
and the autozero test is scheduled for the next breath.
3) After the autozero is run on the next breath, the new autozero value and the pass / fail indicator
are displayed.
If the autozero fails, it will be automatically rescheduled for the next breath.
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