Thermocouple linearization circuit

Published:2011/5/18 3:20:00 Author: | Keyword: Thermocouple linearization circuit | From:SeekIC

This figure shows the thermocouple linearization circuit. It uses broken line approximation method to execute linearization. It sets the breakpoints by the order from RP6 to RP8 and adjusts every broken line's gain by RP2一RP5，s. RP1 is for zero adjustment. Adjusting the RP1 to make the Offset voltages of Thermocouple Amplifier and that of Operational Amplifier Counteract to make sure when intputting is zero, the outputting is zero too. To J type thermocouple, the breakpionts are set at 70℃、110℃and 520℃ and its linearization debouchement is at the rage from 0℃一600℃ and the precision is in 士0•5℃.



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