Welch Allyn CP 150 spirometry option - User Manual - Manual (Page 25)

About calibration
The American Thoracic Society recommends calibrating a spirometer every day before
testing. In addition, each time you open a new package of flow transducers, verify the lot
number on the package label. If this lot number differs from the lot number used during
the most recent calibration, you must recalibrate the spirometer before resuming testing.
There are two types of calibration:
Single-flow calibration
•
One inhale/exhale cycle
Multiple-flow calibration
•
Three inhale/exhale cycles at three different rates:
○
3 L in 1 second (3 L/s)
○ 3 L in 3 seconds (1 L/s)
○ 3 L in 6 seconds (0.5 L/s)
CAUTION For proper performance, the calibration syringe must be
recalibrated every year. See the syringe's calibration certificate for the most
recent calibration date. When the syringe is due for recalibration, return it
to the manufacturer.
Performing a calibration
Calibrate single flow
CAUTION To avoid the risk of cross-contamination, always use a new flow
transducer when calibrating the spirometer. Observe all safety information
that came with the flow transducers.
1. From the ECG Home screen touch the (Spirometry) button.
2. Touch the (Calibrate) button. The Spirometry calibration screen appears.
3. Touch the Calibrate single flow button.
Fill in these fields:
•
Transducer lot code
• Transducer calibration code
• Syringe Vol. (in ml)
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