From the course: PLC: Industrial Sensors

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Thermocouple types

Thermocouple types - Ladder Logic Tutorial

From the course: PLC: Industrial Sensors

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Thermocouple types

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- [Instructor] Thermocouples are classified by types. Each type is used for different applications. The most common types are J, K, T, E, and N types. There are also types for high temperature calibrations, like type R, S, B, and C. Each type has a different temperature range as you can see here. Also, each type has a color associated with it. The color usually indicates the color of the positive lead wire. K type for example is yellow, meaning yellow wire is the positive side. The type is usually shown on the specification page. Here's an example of a thermocouple from Endress+Hauser. It shows that this thermometer can come in two types: type K and type J. And it shows the temperature ranges for each one. Details also included in the data sheet like this example from Omron showing type K, J, and R for these temperature sensor models. The color coding depends on the different standards used within different…

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