Aeonmed Aeon8800A - Technical Specifications of O Sensor

150
Item
Range
Stepping
Accuracy
wave form
When gas module is opened, 0～15s；Gas module is closed, 0～20s.
P/V Loop
Horizontal abscissa displays Paw: fixed range:-20～80cmH
2
O, gain is 20cmH
2
O.
Vertical abscissa displays tidal Volume: fixed range is 0ml~ 1500ml, gain is 250ml.
F/V Loop
Horizontal abscissa displays tidal Volume: -1400～0mL, gain is700mL.
Vertical abscissa stands for Flow: fixed range: -90～90L/min, gain is 45L/min; The
positive axes stands for aspiratory flow rate, the negative axes stands for
expiratory flow.
9.9. Technical specifications of O
2
sensor
Table 9-15 Technical specifications of O
2
sensor
Response time
No more than 15s.
Sensor type
Chemical fuel battery
Antedated battery
life-span
Normal operation period is 12 months.
Operating principle of
O
2
monitor
O
2
monitor monitors and displays O
2
concentration in the patient loop.
O
2
sensor accessory includes one O
2
sensor. This sensor can produce
a voltage proportional with O
2
partial pressure in its detected surface
and its metal electrode will exhaust gradually in the process of
oxidation.
O
2
sensor is an electrochemical appliance (chemical battery). O
2
diffuses into this device by penetrating a membrane to make the
metallic electrode oxidizing. In this process, electric current occurs,
which matches with partial pressure of oxygen displayed by electrode
sensor.
The sensor’s voltage is influenced by the temperature of monitoring
gas blender. The thermostat outside of the sensor can compensate the
temperature change in sensor.
O
2
monitor uses signal to deal and analyze circuit, transforming the
sensor signal to corresponding oxygen percentage value.
The system displays this value and compares it with the saved alarm
extremes. If this value exceeds the extremes, the monitor will send
alarm.