RTD sensors: There are four accuracy categories for RTDs set by IEC 60715 There are a few high-temperature RTD probes that will go up to ~1562☏ (850☌) but the thermocouple probe is the most popular sensor in these higher temperature ranges.īelow 1000☏, either element is an excellent selection therefore you need to look at their other characteristics. For temperatures above Type K and N, the noble metal (platinum) Type R, S, and B thermocouples can be used as high as 3100☏ (1700☌). Type E is also a good choice with a range up to 1600☏ (870☌) and it has better accuracy than K or N types. The key parameters that can affect the decision are:įor very high temperatures (without going to expensive platinum thermocouples) Type K and Type N thermocouples have the highest ranges, going up to 2,300☏ (1260☌). To make the decision today, you need to go much deeper and look at the parameters of the two sensors and choose the one with the best set of attributes that fits your measurement needs. RTD temperature probes can be manufactured in almost all the form factors of a thermocouple temperature probe and share the same ruggedness and durability. Because the platinum is thick film deposited on a ceramic base, they are very rugged and not susceptible to shock and vibration like the earlier wire wound devices. Today, with the application of semiconductor manufacturing techniques, we have thick film RTD ceramic-based elements that are very small and almost rival the size of a thermocouple bead. Historically, an RTD element was large and fragile platinum wire wound on a bobbin and encased in glass. The answer used to be easy – a thermocouple sensor for industrial use and an RTD sensor for the laboratory. One of the questions often asked to TEGAM is, “Which temperature sensor should I use, an RTD probe or a Thermocouple probe?” Comparing Thermocouple Sensor Probes and RTD Sensor Probes for Temperature Applications

Ansi mc 96.1 standard