Temperature is the most measured parameter in the industrial world. Various measuring options are available such as general thermometers, temperature sensors, data loggers, and Thermocouple. While comparing all the temperature measuring options, we highlight the Thermocouple here. So, if you are a professional who works in the industrial world; you will benefit from reading this article. Enjoy!
Temperature as a parameter
What is temperature? “The degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch.” Well, that is how the dictionary defines temperature. Anyway, we can’t determine the temperature by DIY methods such as touching in the industrial world. High-temperatures can cause nasty burns. A general thermometer also comes with limitations in terms of maximum temperature that can be measured with it. For example, most alcohol thermometers can measure temperatures up to 200 degrees Celsius only. Industrial applications can reach temperatures up to 3000 degrees Celsius. And, this is where the Thermocouple comes in handy. This meter type can measure temperatures up to 2500 Celsius safely. The device is cheaper when compared to its temperature measuring limitations.
What are industrial applications that can reach high-temperature?: We can highlight metalworking industry here. This is an industry where the professionals deal with very high-temperature up to 3000 degrees Celsius. So, general thermometers won’t help you here.
Well, you can use a Thermocouple for measuring mild temperatures too. Meters used in the food industry is an example of low-temperature applications of this versatile temperature measuring device. Temperature is the most measured parameters in the food industry. Cooked foods’ internal temperature is measured to ensure whether cooked properly or not. Under-cooked food is a common cause of food poisoning (especially, meaty foods.) A Thermocouple used in the food industry can measure a wide range of temperatures from minus values to positives values. Why is this temperature measuring device more accurate than other temperature measuring options? The percentage uncertainty or the error of reading is a minimum when using this device. These meters are categorized as type K, N, and so on for easy identification. The range of temperature that you can measure is determined by the metal wire combination in the device. Inserting the probe or the sensor of the device in the temperature source causes a voltage. This voltage is converted into a reading by the device’s electronics. Manual devices used to come with a moving needle as the indicator. Anyway, the time of manual meters has come to an end due to the high demand for digital meters that come with an LCD screen for easy readings. So, if you still use a manual meter; it is the right time to buy a digital one.
As mentioned, various Thermocouple types are available in the market for different applications, and each type can measure different temperature ranges. For example, the type K is one of the most used meters for commercial and industrial applications. This meter can measure temperatures ranging from –270 to 1260C or 0 to 200C. Each Thermocouple type comes in two forms: 1) Grade wire. 2) Extension wire. The type K grade wire device can measure temperatures ranging from –270 to 1260C. Extended wire meter can measure from 0 to 200C. So, you can choose the right meter that suits your application the most from a wider range of products. If you are not sure of the right type for your application; contact us today.
The type J Thermocouple can measure temperatures ranging from -210 to –760C, hence ideal to use for food-related applications. Since this type can measure greater minus values, you can use it for some industrial applications too. The type T Thermocouple is a top choice for applications where greater minus temperature values are involved. The temperature measuring range of this versatile type extends from -270 to 370C. The type E meter can also measure minus temperature values up to -270. The top advantage of this type over type T that you can measure a great positive temperature range up to 870C. The type N meter also can measure minus temperature values up to -270. Anyway, it can measure positive temperature values up to 392C only, which is a downside when compared to type T and E. Type S and R can measure temperatures ranging from -50 to 1480C. Which Thermocouple type suits the most for very high-temperature applications? The type K can measure temperatures up to 1260C, which is a very high-temperature value. Anyway, another Thermocouple type is now available in the market that can measure very high-temperature even than the type K. It is the type B, which can measure up to 1700C. Hence, this type is widely being used for high-temperature applications such as in the metalworking industry.
We hope that now you have understood the temperature ranges of this temperature measuring device. Also, that other temperature measuring devices cannot measure higher values as the Thermocouple does.
Well, we should discuss this advanced temperature measuring and monitoring device here. A Thermocouple Data Logger is another way to call it. A data logger is a battery-powered device that comes with an internal memory to measure and save the data. Other than measuring temperatures, monitoring of it also crucial in many commercial and industrial applications. For example, monitoring machine temperature. You can use a general Thermocouple for taking instant readings, but to continue the process continuously? This is where a data logger comes in handy. You can set the sample rate, which is how often the logger will take a measurement and save the data in its internal memory. The stored data later can be retrieved on an external device such as a laptop or a mobile device. You can take printouts of the retrieved data for further analysis.
Some final words
Manufactures of the Thermocouple across Australia produce quality products. Anyway, doing your online research before choosing the manufacturer is highly advisable. Some distributors sell world-leading brands from other countries too. A Thermocouple is a robust temperature measuring meter, hence you can use it for years by maintaining it properly. For applications where corrosive chemicals are involved, choose the right probe (metal) that shows resistance to chemicals. Using the meter for very high-temperature applications can reduce the lifetime of the probe. Don’t immerse the electronics in any liquids, which can jam the circuit.
We sell a wide range of products across Australia. Our products’ quality and after-sell service will satisfy you 100%. Contact us today and order your reliable temperature measuring meter today!