PH electrode with output voltage is linear

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letan

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PH electrode

Hi all,
I want to buy a PH electrode with output voltage is linear. In my PCB, I use PIC to control (read or write data). Can anyone help me?
Regards
 

PH electrode

PH electrodes always have linear output voltage, but they need a high impedance electrometer amplifier. See TI OPA129 as an example.
 

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