Thermocouple And Conditioning Circuits Enable Accurate Temperature Monitoring Over Wide Range
by Robin Yang, Microchip Technology, Chandler, Ariz., How2Power Today, Oct 16 2017
Focus:
Accurate temperature measurement over a wide range is valued in industrial thermal management
and hazardous environmental monitoring. To achieve precise calculations over the entire
temperature range, both the sensor and the signal conditioning circuit must be meticulously
adapted and adjusted. This article discusses the strengths and weaknesses of thermocouples and
the common techniques for mitigating their sources of error. The article then discusses the
operation and performance capabilities of a highly integrated, sensor conditioning IC, the
MCP9600, which converts a thermocouple’s EMF to a temperature reading in Celsius.
What you’ll learn:
- How to achieve accurate temperature measurement over wide temperature ranges using thermocouples
- How to correct the nonlinearities of thermocouples to obtain more accurate temperature readings
- How to simplify signal conditioning for thermocouples by using an integrated thermocouple conditioning IC
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