Item Description
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).
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
or the OmniBed
canopy was
closed.
Low O2 supply pressure or
ow.
Inlet screen occluded.
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. 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).
Endcap 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).
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).
66 6600-0343-000 104 © 2001 by Datex-Ohmeda, Inc.. All rights reserved.
Chapter 4: Troubleshooting
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