Discussion reply: what information did they include that you found

In order to select the suitable detector, what materials should be used as sensing elements and wire materials for RTDs?

When talking about RTDs there are three main types, Thin-film  elements, Wire-wound elements, and Coiled elements. Thin film elements  are made of very thin material, often platinum, on a ceramic substrate.  This material is then coated with epoxy or glass this is done to protect  the material and add rigidity to the lead wire. With wire wound  elements, they are composed of platinum wire coiled around a mandrel  composed of insulating material. Lastly, coiled element RTDs are also  made of platinum wires but what sets them apart is that it is wires  encased in some insulative material. The wires aren’t held firmly inside  the material so they are free to expand and contract as needed. The  common theme amongst all three types is the use of platinum and  ceramics. This isn’t the only option but platinum is a good option  because of its repeatable results and wide temperature range.

How are thermocouples types and temperature ranges involved?

Thermocouples have different types based on their different  attributes such as durability, chemical resistance, application  compatibility, and vibration resistance. Within these categories are  material considerations, type R, B, and S thermocouples are made using  noble metals (silver, osmium, iridium, platinum, etc.) these metals are  used because of their ability to handle high temperatures. Other types  of thermocouples such as J, E, and T are made from base metals. This is a  matter of price, they aren’t as high performing but they are used a lot  more commonly.

Coleman, J. (2021, June 25). Types of Thermocouple: A list of the common types of thermocouple. ISSAA. https://issaa.org/types-of-thermocouple/ 

 Links to an external site.

What types of RTDs are available? (n.d.). Https://Www.omega.com/En-Us/. https://www.omega.com/en-us/resources/rtd-types