Passport V Operating Instructions 0070- 0-0704-02 19 - 23
Appendix Performance Characteristics
after entering measurement mode, periodically for durations of typically 10 seconds at
a rate of at most once per hour.
• If a change of 8 °C from the last AZ is detected.
• If a pressure change of 20 mmHg relative to the last ambient pressure measurement
(less than the purge threshold) for a period of 30 seconds is detected. The module will
be able to detect a real change in the ambient pressure and a pressure change due to
partial blockage of the FilterLine.
The module prevents the triggering of an SFM in the following situations:
• In case of purging until the end of this state.
• During a breath absence period which follows a valid breath.
• While waiting a minimum of 20 seconds for host SFM enable command. (After the 20-
second opportunity given to the host to schedule the SFM passes, the module
schedules the SFM according to a priority determined by current conditions).
DPM CO
2
System Response Time: The system response time (with a standard-length FilterLine)
which includes the delay time and rise time (10% to 90%) in
response to a step change in the CO
2
concentration is 2.9
seconds typical.
Rise Time (Adult and
Neonatal):
190 msec maximum
Delay Time: 2.7 seconds typical
Pump Calibration Interval: No routine calibration is required. The module should initially
be calibrated after 1200 operating hours, then once a year
or after 4,000 operating hours, whichever comes first.
Initialization Time: Time to full accuracy (power on to first reading): Typically 30
seconds for both reading and waveform (max 180 seconds).
At full accuracy when value appears.
CO
2
CO
2
measurement range: 0-99 mmHg
Measurement accuracy: ±2mmHg (0-40mmHg)
±5% of reading (41-76mmHg)
±10% of reading (77-99mmHg)
Resolution: 1mmHg
Sampling rate: 50Hz
0
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