Calibration

[Fgodinho]

Is it possible to do some probe calibration by Shield? Is there any procedure?

[Christian_Bylund]

Is it possible to do some probe calibration by Shield? Is there any procedure?

The 2 types of calibration that I know of is the following:

1. Propane gas calibration (Not very safe):
https://performancetrends.com/PDFs/A-F%20Checker.pdf

2. Free air calibration (Very safe):
https://www.aga.se/sv/images/Synthetic%20Air_en_se.1.0_tcm586-443665.pdf

Free air calibration can also be done in "free air" without any gas, just take in consideration that humidity, temperature, pressure affects the reading. But this is usually sufficient. The Lambda Shield for Arduino is typically showing between 20-21% in free air with a healthy sensor.

For high precision instrumentation, you would ideally need a calibration gas close to the measured gas but then we are far from the capabilities of the Lambda Shield.

Thank you.

[billlask]

Hello
Have we found a way to calibrate the data?

Thank you

[Christian_Bylund]

Have we found a way to calibrate the data?

Hello.

Yes, the most common solution is to calibrate or rather verify the data in open air.

Here is a video we have made on how to get the most accuracy out of your Arduino and Lambda Shield.

https://www.youtube.com/watch?v=YBFQFQDi_Lo

Thank you.