THERMOWELLS
MANUFACTURERS OF THERMOWELLS TAILORED TO YOUR NEEDS
At SRC, we manufacture a wide variety of temperature sensors, including industrial thermocouples. A thermocouple is a temperature sensor composed of two dissimilar metals, joined at one end, which is sensitive to temperature changes.
There are different types of industrial thermocouples, depending on the combination of metals, and you should know when and how to use them to take advantage of their characteristics in your industry.
WHAT IS A THERMOWELL?
A thermowell is a tool used to protect temperature sensors (such as thermocouples or PT100 sensors) against corrosion, elevated pressure and material velocity.
MAIN FEATURES
The types of thermowells They are classified according to the design of the thermocouple or sensor. They can be straight, stepped or tapered, depending on the diameter and size of the stem.
A straight thermowell It has the same diameter throughout its length and protects against corrosion and erosion.
The stepped thermowellsinstead, it goes from ¾ diameter at the top to ½ the diameter near the tip. This increases resistance, against smoother speeds, and response to temperature, for sensing devices.
He conical thermowell, on the other hand, has a diameter that gradually decreases along its length. With this design, resistance and response times to temperature changes increase.
CRITERIA FOR CHOOSING YOUR THERMOWELL
In order for the thermowell to fulfill its functionality of extracting the calibration data from the industrial process more quickly and easily, we must take into account the requirements of the installation and select the appropriate one.
For this, the characteristics of the temperature gauge with those of our thermowell:
Connection types
The type of connection refers to the nature of the thermowell: is it threaded or welded?
When selecting our model, we must take into account the industry in which we are going to be operating. For example, in the pharmaceutical and food industries, the weldable wires cannot be brought into contact with the product, so it will be relevant to perform a weld.
diameter size
There are Thermowells for temperature sensors designed to measure the dimensions of the digital thermometer that will be used to control the industrial process. However, there are also models with a standard diameter, which allows greater flexibility.
These adapt, thanks to their standard diameter, to the most used devices, with the following measurements:
0.26 inches in diameter.
0.385 inches in diameter.
Type of material
The next thing we are going to assess is the material with which it is made, as it will provide longevity to your product, making it resistant to chemical products, temperatures and flow rate.
Chemical corrosion can be increased at low concentrations and high temperatures. In addition, we must add the possible erosion that the particles suspended in the liquid would produce.
Therefore, we highlight the following materials as the most used to produce thermowells:
carbon steels
Titanium
Molybdenum/Chromium Steels
Stainless steel
Nickel based super alloys (Incoloy®, Inconel®, Monel®, Hastelloy®, Haynes® Alloy)
Carbon steel has little resistance to corrosive substances and low temperature and pressure applications are limited. Stainless steel, on the other hand, is more resistant to heat and corrosion, which makes it even more interesting.
The rest of the alloys are more expensive than stainless steel, although they are much more resistant.
DO YOU NEED SPECIALIZED ADVICE?
WE ARE SPECIALISTS IN PROVIDING THE SOLUTION THAT BEST SUITS YOUR NEEDS. SEND US AN EMAIL WITH YOUR QUESTION AND OUR TECHNICAL DEPARTMENT WILL CONTACT YOU AS SOON AS POSSIBLE.