The most common failure mode for thermocouples is to fail open, otherwise known as “burning out.” An open thermocouple is…
Reference junction compensation is a necessary part of any precision thermocouple circuit, due to the inescapable fact of the reference…
In every thermocouple circuit there must be both a measurement junction and a reference junction: this is an inevitable consequence…
Previously, it was suggested that automatic compensation could be accomplished by intentionally inserting a temperature-dependent voltage source in series with…
It is crucial to realize that the phenomenon of a “reference junction” is an inevitable effect of having to close…
Multiple techniques exist to deal with the influence of the reference junction’s temperature. One technique is to physically fix the…
The amount of voltage indicated by a voltmeter connected to a thermocouple is the difference between the voltage produced by…
In its simplest form, a thermocouple is nothing more than a pair of dissimilar-metal wires joined together. However, in industrial…
RTDs are completely passive sensing elements, requiring the application of an externally-sourced electric current in order to function as temperature…
Proper connections for all three types of RTD sensor (2-wire, 3-wire, and 4-wire) to a user configurable transmitter are shown…
