How to make LMP91000 to work together with the gas sensor COH-A2 (alpha), which can measure the Carbon Monoxid and Sulfied at the same time.

Hi Wang,

This app note from alphasense shows one CE/RE bias for two WE outputs. You would need to use the CE/RE from one LMP91000 and a second LMP91000 just for its WE input and TIA. 

http://www.alphasense.com/WEB1213/wp-content/uploads/2013/07/AAN_112-02.pdf

http://www.alphasense.com/WEB1213/wp-content/uploads/2019/09/CO-H2S.pdf

thanks

ren

Dear Wang - 

I looked around a bit on the Alpha website and found this ==> http://www.alphasense.com/WEB1213/wp-content/uploads/2013/07/AAN_112-02.pdf

Here you can see the dual potentiostat circuit that would be satisfied with two LMP91000 devices.