Page 102 (Model K)
17.5 Controller “Block and Leak” pressure sensor calibration
a) Connect a Y-piece with a variable
restrictor to the fresh gas port and
monitor generated pressure with
the calibration analyser.
b) Set up the ventilator to CMV mode and set the following parameters:
Set the controls in the CMV Panel as follows
BPM to 0
Insp. time to 0.00 sec
Set the PIP control to 0mbar
PEEP to 0
c) Adjust the restrictor to set a pressure of 140 mbar on the
calibration analyser.
d) Adjust Block and Leak pressure sensor gain until the
sensor reading and the calibration analyser agree.
Acceptable tolerance: ± 1 mbar
e) Remove the tube from the fresh gas port and adjust the Block and Leak
pressure sensor offset until the sensor reading is zero.
Acceptable tolerance: ± 1 mbar
f) Repeat steps f and g until pressure sensor and calibration analyser agree
Acceptable tolerance: ± 1 mbar
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