What is Zero Calibration for Capnotrainer?
Zero calibration is the process of resetting the reading so that it displyas 0 when measuring a gas that does not contain CO2.
✔ The carbon dioxide concentration in the room is normally almost zero (around 0.04%), but it measures a much greater value than zero, even though nothing is connected to it.
✔ When using the zero-point adjustment button without a zero calibrator, a patient with a value of 38 may be measured as low as 35.
✔ Also, an obvious outliner may be measured, such as over 60.
In these cases, you should perform zero calibration by using a zero calibrator.
- 1Start the Capnotrainer.
- 2Remove the black caps at the both sides of the zero calibrator.
- 3Attach the water trap to the zero calibrator and then attach it directly to the Capnotrainer.
- 4Press the zero-point adjustment button on the side of the instrument using a fine-tip pen.
- 5Confirm that the measured value has dropped.
- ６Remove the zero calibrator. After removal, the device will measure the indoor carbon dioxide level again, causing the value to rise slightly. This is normal operation.
- 7Finally, make sure to tightly close the cap on the zero calibrator you used. As you use it, the color will gradually turn purple, and when it becomes dark purple, it means it is no longer usable. If it becomes unusable or loses its effectiveness, please contact us.
That completes the zero calibration process.
If abnormal values continue to be measured despite performing zero calibration, a CO2 calibration will be conducted.
Zero calibration aligns the "0" position like a ruler, while CO2 calibration aligns the "38" position like a ruler (5% of gas corresponds to 5% of atmospheric pressure, which is 38 for a pressure of 760 mmHg).
For any further inquiries or questions regarding these procedures, please contact Capnotrainer Japan.
