Looking at fabricating a BBQ/smoker meat and air temp thermometer for inside the BBQ. Was thinking of using a thermistor but the only ones I could find have a range of -55 to 125 degrees Celsius. I need to be able to measure up to about 210 Celsius or even as high as 300 Celsius for a pizza oven. the probes and thermometers you can buy are very tiny to fit in a tiny pointed tube to be able to insert in the meat like the one shown in the attached picture. I am planning on using it with an UNO R3
Does anyone know what the ideal component would be for this application?
The commercial offerings all use thermocouples because of the temperatures involved. You need additional circuitry to condition their output to make it usable by an Arduino. I'm not sure it's worth rolling your own - just buy one.
PT100 platinum resistance thermometers. Platinum resistance thermometers (PRTs) offer excellent accuracy over a wide temperature range (from –200 to +850 °C). Standard sensors are are available from many manufacturers with various accuracy specifications and numerous packaging options to suit most applications. There are many modules available to operate these. There are also modules for thermocouples also not very inexpensive, they do the cold junction compensation for you. Here is a link that will help on the thermocouple: Thermocouple Types - Types of thermocouples - Comparison of Thermocouple Types. I have used mainly J and K in the past with great success. I have also made them but you must use thermocouple wire, not extension wire (there is a difference), Simply twist then melt the two wires together with a torch. If you do not need a lot of them simply purchase them with the sensor module.
