seebeck error

Seebeck Error: When a Sense Wire Adds Its Own Voltage

Seebeck error schematic

Every junction between two different metals in a sense-wire path is a small, unwanted thermocouple. If there’s a temperature difference across it, it generates a real voltage that a precision voltmeter cannot tell apart from the signal it’s supposed to be measuring. 1. A Junction You Didn’t Design Is Still a Junction Anywhere a copper … Read more