We measure temperature with thermocouples which are connected to a cFP-TC-125. I'm interested in the measurement accuracy of this unit. Of course I know the diagrams in the manual, which contain different measurement error curves for different measurement situations. For a specific ambient temperature and thermocouple, there are two curves. One does show a so called "Max" and the other one a "Typ" measurement error. I understood the difference, however we want to use the information to calculate the total measurement error (which additionally contains the error of the thermocouple sensor and the error from averaging different measurement points). Well, I'm getting to the point: If you totalize different measurement errors you need to use the same confidence intervall, because this is scaling the measurement error.
The question is, if someone could tell me to which confidence intervall does "Max" and "Typ" belong. Is that 1sigma, 2sigma, 3sigma? In a first approach i would think that "Typ" is 1sigma and "Max" is 3sigma. But, assuming a normal or a uniform distribution, this doesn't seem to fit to the given curves.
That was the information I was looking for. I just wondered how to treat the error from this instrument in complex measurement, because you have to bring all errors to the same level...so your answer clearly helps me to treat the error correctly.