Olá boa tarde. Injete um sinal simulando um termopar e deu uma diferença de 20 graus e depois usei a compensação interna do injetor que corrige a leitura no display. O Unitronics possui uma compensação interna ao conectar um termopar na entrada do plc V130.
Hi, i do not know V130 model present on foto.
Inside the V130-33-TA24 Unitronics PLC contains an MCP9801 chip for thermal compensation of the thermocouple cold junction.
It is located directly next to the TC connector on the PLC I / O board - on the back of the board.
Therefore, I think that all those PLCs that support thermocouples have similar compensation.
On the pages 3-4
https://www.unitronicsplc.com/wp-content/uploads/2016/08/Vxxx_J_TA24_SPEC_02_16.pdf
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