Patent ID: 8996327
Filing Date: 2015-03-31
Classification: G01K

Abstract:
1. An I/O circuit for use with an industrial control system comprising: a terminal block having at least one first terminal for releasably receiving leads of at least one first temperature sensor; a multiplicity of second temperature sensors permanently affixed in thermal communication with each of the at least one first terminals of the terminal block; at least one second terminal for connecting at least one third temperature sensor having a higher accuracy than the multiplicity of second temperature sensors: and input circuitry electrically connected to each of the at least one first terminals, the second temperature sensors, and each of the at least one second terminals for receiving temperature signals from each of the at least one first temperature sensors, the second temperature sensors, and each of the at least one third temperature sensors, wherein the input circuitry is operable to compensate the temperature signal received from each of the at least one first temperature sensors using temperature signals from the second temperature sensors and from each of the at least one third temperature sensors.