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Subject: Limb gen. Из описания термопар:Thermocouples
to EN 60 584 and DIN 43 710
From the variety of possible metal combinations, certain ones have been selected (Tables 1 and 2) and their voltage tables and permitted tolerances incorporated in standard specifications (Fig. 2 and Tables 3 and 4).
Note that two Fe-Con thermocouples (Type J and L) and two Cu-Con thermocouples (Type T and U) have been standardized in both EN 60 584 and DIN 43 710.
The “old” thermocouples L and U are now being used less frequently than the thermocou-
ples J and T to EN 60 584.
The individual thermocouples are not compatible, because of their differing alloy compositions.
If a Fe-Con thermocouple Type L is connected to an instrument linearized for Type J, the difference in the thermal voltages leads to errors of up to several °C. The same applies to thermocouples Type U and T.
The maximum temperature represents the limit to which a tolerance is specified.
The value under “defined to” is the temperature limit to which the thermal voltage is covered by standard specifications.
In the thermocouples listed above, the first ***limb is always the positive one. Limb здесь - клемма? Спасибо.
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