Using a MAF sensor for a non-automotive

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SUMMARY

The discussion centers on the feasibility of using an automobile Mass Air Flow (MAF) sensor, specifically a hot wire type, for measuring the mass flow rate of air in a chamber containing an NDIR sensor. The user seeks to understand the calibration process and whether the output from the MAF sensor is directly proportional to the air flow or follows a predefined map. It is concluded that the calibration data is likely stored in the vehicle's Engine Control Unit (ECU), which may complicate the sensor's application outside of automotive contexts.

PREREQUISITES
  • Understanding of MAF sensor operation and types, particularly hot wire sensors.
  • Knowledge of NDIR sensor functionality and applications.
  • Familiarity with calibration processes for sensors.
  • Basic concepts of automotive electronics and ECU data storage.
NEXT STEPS
  • Research the calibration techniques for hot wire MAF sensors.
  • Explore the integration of NDIR sensors with MAF sensors in non-automotive applications.
  • Learn about the data communication protocols between MAF sensors and ECUs.
  • Investigate alternative sensors for measuring air flow in non-automotive environments.
USEFUL FOR

Electronics engineers, sensor developers, and researchers working on gas measurement systems or air flow applications outside of automotive contexts.

robs314
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Hi

I need to know the mass flow rate of air passing through a chamber which houses an NDIR sensor, so I can relate that to the quantity of a particular gas passing through.
I was just wondering whether using an automobile MAF sensor (hot wire) would be wise. If it could be used, it would be very cost effective. Thing is, I am not sure how difficult it would be to calibrate. Is the output directly proportional, or does it follow some kind of map? And if so, is the map stored on the sensor itself or the car's ECU?

If anyone can help that would be great. Electronics aren't my forte

Thanks
 
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Pretty sure it is stored on the ECU.
 

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