Vidmas30 Posted November 2, 2010 Report Share Posted November 2, 2010 Good evening, Last week we had test drive for our temperature and pressure control. PID works fine, but there's a little problem with thermocouple inputs (we use ATC8 module). As I mentioned earlier, there were temperature error with sensor of outdoor temperature, but when we filled heating system and started testing I saw that all the sensors have the error of 4-5C (they all show 4-5C higher temperature) . There are connected 3x water temperature sensors ant 1x outdoor temperature sensor. We use K type thermocouple sensors (produced by our local manufacturer, as I gave Unitronics TC input specifications) connected with K type compensating cable. What should I do? I can subtract those 5C from every sensor mathematycally, but but I don't know if there will be the same error when temperature will rise 10, 20 or more degrees.. Please help.. Quote Link to comment Share on other sites More sharing options...
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