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Thank you for responding.I have insured that the thermocouple are all type k and that the PID's are set correctly for the k thermocouple.I put them in an ice bath and set my offset to 0°. This took my SC setting to -370°. At boiling temp they read 119°.I again adjusted the offset and put them back in the ice bath. They read 19°. Something isn't right. Yo mentioned programming the thermo couples manually, how do i do that?Thanks again