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Chapter 7
Testing, Calibration, and Performance Verification
7-20
Negative flow calibration:
25. The window (Figure 7-20) indicates the start of the negative flow
calibration.
Figure 7-20: Negative Flow Calibration
26. Connect a length of patient tubing between the flow control valve
outlet and the negative flow source outlet (Figure 7-21). Turn on the
negative flow source and click OK.
NOTE:
For the negative flow source, a REMstar device may be used with the
pressure set at 20 cmH
Figure 7-21: System Calibration With Negative Flow Source
BiPAP Focus Ventilator Service Manual © Respironics, Inc.
O
2
Air flow into
ventilator
from external
negative flow
source
REF 1029568 Rev B
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