Closed Door Co2 Sensor Calibration Routine; Co2 Injection Calibration - NuAire NU-5800 Operation And Maintenance Manual

9.4.4 Closed Door CO
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Attach independent CO2 monitoring device to the sample port on the front of the unit
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Enter CO2 calibrations by means of Service Settings
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Select the "CO2 Closed Door Zero Span" text
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Follow on screen instructions
Enter measurement on independent device when prompted
Allow unit to run and stabilize for a minimum of 2 hours then, check calibration with an independent instrument.
Compare the display CO
greater than 0.3%, repeat above procedure. If these two readings have a difference of less than 0.3%, perform the
CO Offset calibration procedure in Section 9.4.1.
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9.4.5 CO Injection Calibration
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The CO injection calibration can be performed separately from zero/span calibration to optimize the gas injection
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time required to recover the CO
possible with virtually no overshoot. Verify the CO
The injection calibration is not required after an "Open Door" sensor calibration since it is performed automatically
during this routine. The injection calibration should be performed after a "Closed Door" sensor calibration when
possible, if CO
The following steps should be taken for the CO
• Enter CO2 Calibrations by means of the Service Settings menu
• Select the "CO2 Injection Time" text
• Follow the on screen instructions
OM0211
Rev 3 March 2013
Sensor Calibration Routine
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percent to your independent measurement. If these two readings have a difference
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level to set point after a door opening. The recovery time should be as minimal as
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supply pressure of the Incubator is changed, or is the CO
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sensor calibration prior to performing an injection calibration.
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injection calibration:
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flow control valve is disturbed.
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