#WishIknew What is a thermocouple extension cable?


When you have a question about process automation that needs a short answer, let us know with #WishIknew and #Visaya! We’ll reply with a #WishIknew post. It’ll give a quick explanation, then some related articles, videos, and reviews if you want to know more.

I wish I knew what is a thermocouple extension cable!

Yes, thermocouple requires specific cables called thermocouple extension cables. Basically, the cable should have the same material of the thermocouple. If you don’t match the cable and the sensor, then you’ll get bad readings.

The extension cable also prevents you from connecting the sensor directly to the control system, depending on the distance. However, you can find applications with extra-long cables to make this connection. You won’t find this issue in an RTD installation. RTDs need certain cables too, but they cost a lot less.

We posted an article talking about different ways to connect sensors to control systems. You can find it and more on thermocouples in this list:

Your friendly neighborhood temperature sensor! – Is it hot in here, or is it just me? Regardless, let’s talk temperature sensor! This basic variable is necessary to a variety of processes and segments. In most cases, you need to monitor exact temperatures, and in some, you need precise control. When you learn about temperature sensor from the maintenance point of view, you’ll find that you only need to consider certain points to choose the right sensor for your application.

Temperature measurement and control systems! – Today, you have tons of ways to connect your instrumentation to your control system, but as always, all the options have good points and bad. With an application where you have to connect temperature sensors to your system, which option(s) will work best for you?


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