NM2C ADJUSTMENT AND CALIBRATION PROCEDURES (continued)
5.6 Breathing Pressure Monitor Calibration
5.6.1 Turn the System Power switch to ON.
5.6.2 Enter the Main Service Screen (ref. Section 2), select the appropriate
Service Code (PMS or SRVC) and enter your Technical Service
Representative I.D. number.
5.6.3 Select MONITORS and press the trigger. Place the cursor at
PRESSURE MONITOR and press the trigger.
5.6.4 Zero Calibration
5.6.4.1 Disconnect the pressure sample line from the absorber
and let the current pressure value stabilize.
5.6.4.2 Set the cursor to STORE ZERO and press the trigger to
store the current value as the new zero.
5.6.5 Span Calibration
5.6.5.1 With a test fixture connected as shown in Figure 5-6,
apply a pressure of 50 cm H
2
O to the pressure sample
line.
5.6.5.2 When the displayed current value is stabilized, set the
cursor to STORE SPAN and press the trigger to store the
current value as the new span calibration.
5.6.6 Disconnect the test fixture.
5.6.7 Set the cursor to EXIT and press the trigger to return to the Main
Service Screen.
5-15
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