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ISFETs vs glass electrodes for testing PH in a process environment

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fastline12

Aerospace
Jan 27, 2011
306
I am trying to identify an economical sensor for testing PH ranges of 5-10 in a industrial process. This will be an in tank sensor array testing other values as well.

I was originally looking at glass but seems by design, they just don't last that long as a continuous monitoring sensor.

This brought me to ISFETs which really seem to fit our requirements but seems to be outside out budget unless we can find more economical FETs for this.

Can anyone speak from experience with either of these sensors to help determine our direction at this point or any other sensor thoughts for this? If we can obtain .1PH resolution, that is acceptable.
 
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