Thermocouples are sensors that measure temperature. They are constructed with two different types of metal, welded together at one end to form a tip known as a junction, where temperatures are assessed.
When a temperature change is detected, a milli-voltage is created, which is calculated by a temperature controller to give an accurate reading.
There are a couple of different thermocouples to choose from, one of the most popular being J-type thermocouples.
But are they appropriate for your project? Here’s everything you need to know.
Table of Contents
What are J-type thermocouples?
J-type thermocouples are made from copper-nickel alloy wire, which can accurately measure temperatures between 0◦C and approximately 816◦C.
They’re more affordable than other thermocouples, but this isn’t to say that their quality or ability to measure temperatures within their range is compromised.
Despite offering a higher temperature range, like their K-type rivals, J-type thermocouples are still extremely effective temperature sensors and an excellent, budget-friendly option!
What are the benefits?
There are several benefits for you to take advantage of when you invest in J-type thermocouples, including:
- They’re budget-friendly
As previously mentioned, J-type thermocouples are extremely affordable – ideal if you’re working with a bit of a tighter budget. However, they offer many of the same benefits as their pricier counterparts.
- They cover a broad temperature range
Although other temperature sensors can manage more than 1200◦C, J-type thermocouples can still accurately measure temperatures of up to 816◦C. This makes them perfect for several high-temperature applications.
- They have fantastic response times
Like all other temperature sensors, the J-type boasts a fantastic response time.
Depending on the material, thickness and overall size, you could receive an accurate reading in just a quarter of a second!
Are they right for my project?
J-type thermocouples are most commonly used to monitor the temperature of inert materials, like sand or concrete, and in vacuum or hot processes including resin manufacture, industrial temperature control, motorsports and aviation industries.
However, they offer a bit of wiggle room for customisation, and you can adjust the length to meet your bespoke project requirements. So, no matter the industry you work in, they’re bound to be the perfect fit.
With this said, keep in mind that constant hot temperatures over 760◦C can, over time, permanently impair the sensor’s accuracy.
Purchase J-type thermocouples from a supplier you can trust
Still not sure if J-type thermocouples are the best choice for your project or not?
Get in touch with a specialist, like Cartridge Heaters, in your area today for help, advice and expert recommendations.
Why not order online and have J-type thermocouples delivered straight to your door?
Always make sure to shop with a supplier you can trust, so you can be confident you’ll receive only the highest quality temperature control products on the market.
