Choosing a new temperature sensor can be quite a daunting task, especially considering the variety that’s available these days.
Without the right knowledge, making the best decision can be difficult, and while it’s impossible to say one is better than another, they certainly offer their own unique set of pros and cons.
Here’s everything you need to know about K type thermocouples and why they may be the most suitable choice for your next project.
What exactly are thermocouples?
Thermocouples are transducers that convert thermal energy into electrical energy. They are constructed by joining two dissimilar metal wires together to form a junction.
Voltage is produced when the temperature at the junction changes. The amount is determined by how much the temperature has changed and the characteristics of the two metals.
They serve as a safety and monitoring gauge for various processes and equipment and are even a legal requirement in some industries, like catering for example.
Since The Gas Safety (Installation and Use) Regulations came into play in 1998, all commercial catering equipment must be fitted with a flame failure device, or thermocouple so that the gas supply will cut out if the flame is extinguished.
Why should I choose a K type thermocouple?
Being one of the most common types of temperature sensors, the K type thermocouple is simple and effective to use and offers many advantages.
While they’re slightly more expensive than their J type counterparts, the K type is, arguably, much more versatile as they’re able to withstand higher temperatures of up to 1260◦C, whereas the J type can only manage that of up to 816◦C.
This higher temperature range means they’re much more useful for extreme temperature applications. However, if you’re looking for a temperature sensor to perform well at a lower temperature, you might want to take a look at alternative options.
They also offer unmatched durability thanks to their metallic makeup, the nickel/chromium and nickel/aluminium alloys, better protecting them from oxidisation and acidity than the iron limbs of the J type.
Which environments are they best suited to?
K type thermocouples are most commonly used for applications at temperatures of over 550◦C, up to their maximum working pressure.
Seeing as they’re able to withstand such high temperatures and exhibit excellent corrosion resistance, they’re ideal for use in chemical production, petroleum refineries and heating and appliance safety testing.
Ready to purchase your own K type thermocouple?
Now that you know (almost) everything about K type thermocouples, why not order yours online today?
Always be sure you shop with a supplier you know you can trust, so you can be sure you’ll get only the highest quality temperature sensing products. Cartridge Heaters, for example, stock a variety of high-quality thermocouples that are available for immediate dispatch in the UK.
Still not sold on K type thermocouples?
Get in touch with an expert in your local area, who’ll be happy to answer any further questions and point you in the right direction!