The Oridion Microstream ® CO
2
module within the PPM3 does not require
calibration during normal clinical operation. The PPM3 displays a "CO
2
Calibration Due" message when the manufacturer’s suggested number of
operating hours has been reached. Calibrate the CO
2
module when this
message is displayed. It is recommended to calibrate the CO
2
module on an
annual basis or after 4000 hours of use, whichever comes first. In the first
year, the CO
2
module should be calibrated after 1200 hours of use. The
number of hours until calibration is due may be found in the PPM3 event log,
which is accessed by pressing the PPM3 SETUP Key, then selecting
"Administration," then "System,” and then "Show Event Log."
NOTE: Calibration should be performed by a trained technician.
NOTE: Ensure that the calibration gas and regulator are functioning properly
before calibration.
NOTE: Calibration of the CO
2
module will require a calibrated gas mixture of
5% CO
2
, 21% O
2
, with the balance N
2
. The calibration kit available from Air
Liquide (Scott Medical); Part Number T4653ORFCD contains a canister of
the above gas mixture, a T-piece connector and a Calibration Filterline.
To calibrate the CO
2
module:
1. Press the PPM3 SETUP Key, then select "Administration," followed by
"Service," and "Calibration" (password required to access this screen)
2. Prior to calibration initiation, connect the CO
2
calibration line to the monitor.
3. Attach the calibrated CO
2
gas mixture to the CO
2
calibration line.
4. Select "Start CO
2
Calibration" on the screen. The PPM3 displays "CO
2
Calibrating" for up to 1 minute.
5. Once completed, the PPM3 displays "CO
2
Calibration Complete" or "CO
2
Calibration Failed."
6. If the calibration fails, determine the cause of failure appropriate to the
displayed error message given then repeat the CO
2
calibration procedure.
7. Upon successful completion, remove the calibration gas from the monitor.
Dispose of it according to the instructions supplied with the kit.
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