Thermocouple_signal_conditioner_with_cold_junction_compensation

Published:2009/7/24 2:51:00 Author:Jessie | From:SeekIC

Fig. 13-31 This circuit shows a 5-V powered thermocouple signal conditioner. Cold-junction compensation is included, and the circuit allows one leg of the thermocouple to be grounded (for noise considerations). The table gives proper values for R1 for various standard thermocouples. Output scaling can be set by RF/R1 to whatever slope is desirable. Cold-junction compensation holds within ±1℃ over 0o to 60℃. Linear Technology, Linear Applications Handbook 1990, p AN 11-5.



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