We have an application where we need to measure temperatures with unshielded, welded K-type thermocouples. The thermocouples are spot-welded onto a conductive surface, so the thremocoules are grounded. In a different application the thermocouples are spotwelded onto conductive surfaces that have a couple of volts potential between them (no more than 1V).
Currently we are measuring temperatures with multiple thermocouple sensor ICs connected to isolated power-supplies and sending the measured data through opto-isolators.
Would the LTC2986 be able to measure temperatures on multiple channels like described above (with grounded probes or probes with potential between them) so we dont have to have a convoluted isolation system? Also we pick up a lot of noise with the current system, the LTC2986s noise rejection will surely help.
Thank you in advance for your answers.