Nellcor NPB-75 Service Manual page 55

Section 10: Performance Verification
10-4
CO Calibration Check
2
Caution: Do not check CO
BTPS setting is ON (factory default). This mode corrects the CO
value for BTPS. The calibration check mode disables this
correction.
In order to ensure accuracy, a CO
a year. Calibration gas and a FilterLine are needed for this procedure.
Start the process from the Interface Test screen (refer to Table 4-1:
"Accessing Service Mode and Changing Parameter Settings") as follows in
Table 10-1: "CO2 Calibration Check".
Note: Connect the FilterLine to the monitor before starting CO
Calibration Check.
Table 10-1: CO
Objective
Access CO
2
Calib.
Wait 20 minutes
to reach steady
state
temperature.
Change option
to Start.
Start Cal.
Check. An
Autozero
process
automatically
occurs.
Prepare for Cal. Connect the
Check. FilterLine to the
calibration gas.
values from the measuring mode if the
2
calibration check needs to be done once
2
Calibration Check
2
Action
short press
3 times
short press
short press
2
Result
2