Hello Benjamin,
You will need a couple of amplifier stages to convert the pH probe current output, to a voltage range compatible with the XTR111 input. Have a look at the LMP7721 datasheet, Figure 50. - LMP7721 applied as a pH Electrode Amplifier.…
Hello Krasimir,
I am simply modifying your attached circuit from above in Tina simulation. There are many ways to bias and compensate the thermocouple sensors. Typically, if you want to measure accurate temperature, TCs will require cold-junction compensation…
to User473,
I searched all the op amp portfolio with the parametric search (precision, general purpose, and high-speed). There are 6 options with temperatures of 150C and above (see attached). The best match is the OPA211-HT (210C max). This is the…
