Datex-Ohmeda 7100, Technical Reference Manual

Page: 55 / 158

4 Tests and Calibration
1006-0836-000 02/03 4-15
4.9.4
Airway Sensor Span
The Airway Sensor Span procedure calculates a gain coefficient for the airway
pressure transducer.
Calibration setup
(Aestiva machine)
1. Disassemble the breathing system to the point where you can remove the
exhalation valve.
• Remove: flow sensor module, breathing circuit module, bag arm,
open control panel, bellows assembly, main manifold, and
exhalation valve.
2. Reassemble the breathing system leaving out the exhalation valve,
bellows assembly, and bag arm.
• Replace: main manifold, close control panel, breathing circuit
module, and flow sensor module.
3. Attach a patient circuit tube to the Calibrated Flow Orifice test tool.
4. Insert the Calibrated Flow Orifice into the manifold (PEEP) port.
5. Connect a pressure sensing tee to the inspiratory flow patient connection.
6. Connect the open end of the patient circuit tube to the flow port of the
pressure sensing tee.
7. Connect a manometer to the pressure sensing port of the tee connector.
8. Refer to next page for calibration procedure
Calibrated Flow Orifice
1504-3005-000
for the Aestiva machine
(refer to Note in Section 8.2)
To manometer