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7.6.1.3 Pressure Sensor Test
When no pressure measurement device is available, check the pressure sensors in the following
way:
1) Directly connect the inspiratory port to the expiratory port with a breathing hose, or connect
the patient circuit to the inspiratory port, expiratory port, and leak test plug in the same way as
that in the leak test.
2) As shown in the following figure, ensure that Safety Valve is On and that Auto/Manual Valve
and VPM Auto/Manual Valve are Auto.
3) Set PEEP Valve Pressure to 10 cmH2O, 30 cmH2O, 60 cmH2O, and 100 cmH2O in turn.
4) Set Insp Valve Flow to 100 L/min and check the values of PEEP Pressure and PAW Sensor.
If the difference between PEEP Pressure on the left and PEEP Valve Pressure exceeds 5
cmH2O or 5%, whichever is greater, the PEEP sensor or PEEP valve needs to be calibrated or
replaced.
If PEEP Pressure is normal but the value of PAW Sensor is less than 20 cmH2O or 20%,
whichever is greater, the Paw sensor needs to be calibrated or replaced.
Select Setup > Service > Diagnostic Tests > Valves.
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