roghenr Posted April 1, 2022 Report Share Posted April 1, 2022 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. Quote Link to comment Share on other sites More sharing options...
MVP 2021 kratmel Posted April 1, 2022 MVP 2021 Report Share Posted April 1, 2022 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 you can see TC input parameters and info about automatic cold junction compensation. Quote Link to comment Share on other sites More sharing options...
MVP 2021 Ausman Posted April 1, 2022 MVP 2021 Report Share Posted April 1, 2022 And....Is the error totally linear? Quote Link to comment Share on other sites More sharing options...
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