9
General Description
Carbon Dioxide Detector
9847 determines approximate CO
2
changes in the airway of intubated patients by measuring the
absorption of mid-infrared light passed through the airway adapter tube. The approximate CO
2
concentration change is indicated by an 8-segment LED bar graph display. The CO
2
detector relies on
the assumption that the inhaled air contains minimal amounts of CO
2
.
Breaths are indicated when the CO
2
level increases by approximately 5 mmHg during exhalation. A
detected breath is indicated on the CO
2
bar graph and by an audible breath beep.
When no breath is detected:
• a high priority patient audible alarm sounds,
• the no breath indicator blinks,
• the lowest CO
2
bar graph segment will be illuminated, and CO
2
readings will be displayed with the
next breath detected.
Medium priority (equipment) alarms occur when:
• the CO
2
sensor is unplugged,
• the airway adapter tube is removed from the CO
2
sensor,
• the light path is blocked, or
• a CO
2
sensor failure occurs.
A high priority (patient) alarm overrides a medium priority alarm. If the audible alarms are disabled, the
third and sixth bars will be solidly illuminated.
Unpacking the Model 9847
Contact the carrier immediately if the shipping carton is damaged. Carefully unpack the device and its
accessories. Nonin’s standard package configuration consists of the following items:
• 1 Model 9847 Pulse Oximeter and CO
2
Indicator
• 1 Operator’s Manual (on CD)
• 1 Model 8000AA-1 Adult Articulated Finger Clip Sensor
• 1 Model 9840SA Carbon Dioxide Sensor
• 3 Model 9840AAT Airway Adapter Tubes
• 6 AA-Size Alkaline Batteries
If any item on this list is missing or damaged, contact your distributor.