System Calibration Calibration
4 - 38 046-006272-00 A7™ Service Manual
FIGURE 4-49
4. Perform pneumatic connections:
1. A four-way device is required to connect the sampling lines for pressure calibration. The
following pictures show the four-way device, connectors on the calibration device and
ventilator control board involved for pressure calibration.
FIGURE 4-50
2. Remove the two tubes marked as #72 and #9 from the pressure sensors (the figure below).
3. Connect the four way tube to the pressure sensor P1 of monitor board, pressure sensor P2 of
PEEP, the tube marked as #72, and the low pressure port of Fluke VT-Plus. The tube marked as
#9 will remain unconnected for this calibration.
Four-way device connecting the
sampling lines for pressure
calibration
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