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Calibration
Introduction
This section provides procedures to perform all adjustments required to calibrate the
Propaq CS monitor to conform to Welch Allyn specifications. Calibration requires opening
the monitor case. This must be performed only by qualified personnel.
• Calibration includes adjustment of:
• Battery charger
• Main power supply
• Real-time ECG output
•IBP gain
•NIBP gain
• Mainstream CO
2
barometer
Additional circuit testing is also included in this section. Perform calibration to adjust the
above parameters if you replace a circuit board or if a parameter does not meet
specifications. After any calibration procedure, always perform the Functional Verification
procedure (“Functional verification” on page 13).
WARNING Whenever the monitor is opened for calibration or repair, a risk
(leakage) current safety check as well as a dielectric strength integrity (hi-pot) test
must be performed as described in this section.
Note
Respiration, temperature, printer, and SpO
2
options do not require calibration.
Sidestream CO
2
has no user-performable calibration. After replacement of any
modules to support service of these options, perform a functional verification for
those associated modules.
The mainstream CO
2
circuitry should be calibrated only if it fails the functional
verification AND you have eliminated all possible faults as listed in the table
“Possible sources of CO2 verification test errors” on page 35.