CO-AF Sensor with LMP91000 calibration

mohsen noor

Other Parts Discussed in Thread: LMP91000

Hello dear,

We intend to use the CO-AF sensor(ALPHASENSE Company) with LMP91000 .

After some time of operation of the sensor, if the sensitivity of the sensor output changes, how can we calibrate the sensor? (I mean, is the calibration done by programming in the micro controller or by changing the parameters of the LMP91000?)

Thank you

Best regards

over 5 years ago

0 Josh Wyatt over 5 years ago

TI__Guru* 91206 points

Dear Mohsen -

I believe you need to write in the default values for that sensor (that are provided by the LMP91000 GUI) check it over some operating conditions, then adjust as required/necessary.

For that sensor, please see: http://www.alphasense.com/WEB1213/wp-content/uploads/2013/07/AAN_105-03.pdf and http://www.alphasense.com/WEB1213/wp-content/uploads/2013/07/AAN_108-03.pdf

0 mohsen noor over 5 years ago in reply to Josh Wyatt

Prodigy 70 points

Dear Josh Wyatt,

For the calibration period, do we have to change the micro controller program each time or write a program from the beginning that automatically calibrates the new relationship (gas concentration to sensor output voltage) at the time of calibration?

Best Regards

0 Josh Wyatt over 5 years ago in reply to mohsen noor

TI__Guru* 91206 points

Mohsen -

that is up to you and the end product goals you have as requirements. According to the maker of these sensors, they take around two hours to stabilize after power up and each sensor needs to be calibrated individually or in batches, over temp, %RH and possibly pressure.

Please see ==> http://www.alphasense.com/WEB1213/wp-content/uploads/2013/07/AAN_110.pdf

and http://www.alphasense.com/WEB1213/wp-content/uploads/2013/07/AAN_106.pdf

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CO-AF Sensor with LMP91000 calibration