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Thermocouples 101

Thermocouples 101

Thermocouples are important temperature-sensing devices that are used in a variety of industries, including plastics manufacturing.

As a leading supplier of plastic moulding supplies, Nickerson is well-versed in the use and application of thermocouples in the plastics industry.

In this blog post, we will explore the basics of thermocouples and their uses in plastics manufacturing.

What is a Thermocouple?

A thermocouple is a temperature sensor that works by measuring the voltage generated between two different metals.

When the two metal wires are joined together, a thermoelectric effect is produced, which creates a small electrical current that is proportional to the temperature difference between the two junctions.

By measuring the voltage produced, the temperature of the system can be determined.

There are many different types of thermocouples available, each with its own set of characteristics and uses. Common types of thermocouples include Type K and Type J and are proud to sell both.

Uses of Thermocouples in Plastics Manufacturing

In the plastics industry, thermocouples are used to measure the temperature of various processes such as extrusion, injection moulding, and blow moulding.

The temperature of the material being processed is critical to the success of the manufacturing process.

If the temperature is too low, the material may not flow properly, leading to defects in the final product.

If the temperature is too high, the material may become degraded, resulting in poor-quality products.

Thermocouples can be used to monitor the temperature of the material being processed as well as the temperature of the moulds and equipment used in the manufacturing process.

This allows manufacturers to make real-time adjustments to ensure the temperature is maintained within the required range.

Benefits of Using Thermocouples

One of the key benefits of using thermocouples in plastics manufacturing is the ability to monitor the temperature in real time.

This allows for immediate adjustments to be made to the manufacturing process, resulting in higher-quality products and less waste.

Another benefit of using thermocouples is their accuracy.

Thermocouples can measure temperature with a high degree of accuracy, allowing manufacturers to precisely control the temperature of the material being processed.


In conclusion, thermocouples are an essential tool for temperature measurement and control in plastics manufacturing.

By accurately monitoring temperature in real-time, manufacturers can ensure that their products are of the highest quality and produced with minimal waste.

As a leading supplier of plastic moulding supplies, Nickerson understands the importance of using thermocouples in the plastics industry and offers a range of high-quality thermocouples for all types of manufacturing processes.

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