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9.1.7 BPM
Ten-turn control with LED digital
indication to set the breath rate
per minute.
9.1.8 Inspiration Time
Set by ten-turn control with
indication on 3 digit LED display
showing the set value in seconds.
Invalid settings of the BPM. and INSP.TIME controls are indicated by these two
displays flashing. The ventilator will not allow the expiration time to be set to less
than 0.25 seconds.
Two ranges controlled by the rear BPM range switch
0.1-3.0 secs (1-125 BPM range) setting resolution 0.02 secs
0.01-0.3 secs (126-250 BPM range) setting resolution 0.01 secs
9.1.9 I:E Ratio
This appears on a four digit LED display and is calculated from
the settings of the BPM and the INSP.TIME controls.
• If the BPM and the INSP TIMES are set so that the l:E ratio
exceeds 9.9:1 or 1:9.9, the display will show four dashes. This
will also occur in the PTV Mode.
9.1.10 Oxygen (FlO
2
)
Indication of the oxygen concentration of the Fresh Gas supply to
the patient appears on a 3 digit LED display. Should the indication
fall below 18% the display will flash.
Recalibration at 100% O
2
is effected by rear panel screwdriver
adjustment. See page 43
9.1.11 Pressure Display
Digital LED indication ±65 cm/H
2
0
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