Thermocouple time constant ADC help

Discussion in 'Homework Help' started by PonkPonk, Nov 26, 2012.

  1. PonkPonk

    Thread Starter New Member

    Sep 11, 2012
    Hi all!

    The question is about a thermocouple and how it's time constant affects the choice of an AD converter.

    Say that a thermocouple has a time constant of 0.5 sec or even 1 sec, what should I consider when choosing a correct AD.

    I know it has something to do with the sampling rate of the AD converter, but I just could not google something that explained the "how to" or why. :eek:
    Can you explain this or send me links about it?

    Very grateful for your time!
  2. WBahn


    Mar 31, 2012
    If the signal you are measuring has a time constant of 1s, does it make much sense to sample it at 1MSa/s?