Item Description
oxygen1 Oxygen reading in percent from second sensor cell:
sensor0 Voltage output in millivolts from rst sensor cell.
sensor1
Voltage output in millivolts from second sensor cell.
NOTE: The following information applies to the oxygen0, oxygen1, sensor0, and sensor1 values:
• For software version 1.40 or previous versions, 23 mv - 280 mv = 21% - 100% O2.
• For software version 1.50 or later versions, 5 - 90 mv = 21 - 100% O2.
temp
Temperature in degrees Celsius read from a sensor inside the sensor housing located beneath
the bed. Refer to temperature to resistance curve in the Tips section 4.7.3.4.
humidity
Relative humidity in percent read from a sensor inside the sensor housing located beneath the
bed.
4.7.2 Servo Controlled Oxygen Alarm Messages
Alarm Message Meaning Cause Action
Low Oxygen
Sensor1 reading
is > 3% below the
oxygen set point
7 minutes after a
set point change.
Low O2 supply
pressure or ow.
Be sure supply is greater than 45psi (310 kPa)
and ow rate is greater than 45 L/min. If ow
rate is <45 check that the inlet screen in the
regulator is not occluded.
Inlet screen occluded. Clean or replace screen.
Air leaks into infant
compartment.
Be sure all doors and portholes are closed
Supply Valve not
opening.
Check supply valves. Refer to the Tips section
4.7.3.1.
End cap safety valve
not opening.
Check valve and spring assembly. Refer to
the Tips section 4.7.3.
Calibration valve is not
closing.
Check the calibration valve. Refer to the Tips
section 4.7.3.2.
Infant compartment
vents occluded.
Check to be sure that the two vents in the
infant compartment under the bed are not
occluded.
High Oxygen
Sensor1 reading
more than 3%
above set point
Oxygen set point
recently lowered.
Allow time for oxygen level to drop.
Supply valve(s) not
closing.
Check supply valves and kinked hoses. Refer
to the Tips section 4.7.3.1.
© 2001 by Datex-Ohmeda, Inc.. All rights reserved. 6600-0356-000 103 59
Chapter 4: Troubleshooting
To Next Page
Loading...
Need help?
General
