To help you navigate between all the options on the market, our experts have created this list of the 5 best temperature transmitters on the market in 2019, based on years of field experience. Of course, there might be local vendors that offer different solutions or prices, so we stuck to global bands and internationally available products.
If you’re looking for wireless temperature transmitters, we have an article on that as well.
The best temperature transmitters of 2019
We consider Yokogawa a strong player in this market. You’ll find its temperature transmitters in various segments. The YTA320 will connect to the most common temperature sensors like RTDs, thermocouples, and millivolt sensors. It offers great integration too, with HART, FOUNDATION Fieldbus, and BRAIN. Nobody has that last one as far as I know. Of course, the 21st century and proprietary protocol don’t play well together, but at least you have the option.
THE YTA320 also allows for a sensor backup. If your primary sensor fails, then your secondary sensor will come online and the transmitter will send you a diagnostic. Niiiiice. And the dual input can give you a temperature average between two points or a differential temperature. Even better.
The YTA320 comes SIL 2 certified, and if you have two, then you can have SIL 3. Always great to see safety as a top priority!
Endress+Hauser iTEMP TMT162
Endress+Hauser makes nice temperature transmitters as well. Unfortunately, if you want wireless, a booming market now, then this one falls out of the game. Still, the TMT162 works great for harsh environments, with its enclosed construction and thorough certification.
It comes with dual input as well, where you can connect RTDs, thermocouples, and voltage signals. As for seamless integration, you have analog, HART, FOUNDATION Fieldbus and PROFIBUS PA, which gives you a good range.
With the dual input you have sensor backup and mathematical functions, which sound great, but it’s only average and differential. It should have more features. We’ll do a full product review soon, once I stop getting lost on their website.
As usual, my favorite highlight of this device has nothing to do with accuracy or performance. It has a really fancy display, and I like the colors and the bar graphs.
Emerson Rosemount 3144P
The 3144P is a relevant transmitter for many applications. I remember presenting the features of this device years ago at an industry shindig in Brazil, and most of its features remain just as straightforward.
Just like most of the devices on this list, the 3144P brings dual input and a sensor backup called HOT backup. Yeah, I already told you how this feature works up there, so let’s skip to the next bit.
It also supports traditional and common sensors like RTDs, thermocouples, and millivolts. We can’t call the display fancy, but it gives the process data clearly, with bar graphs for visual understanding.
It provides certification for using the 3144P in hazardous areas and is also SIL2/SIL3 certified.
Honeywell Smartline STT850
Honeywell puts out a good temperature transmitter but a bad website. I had trouble finding the info I needed, just like with E+H. Come on, y’all! Anyway, the STT850 provides dual input and seamless integration, offering protocols like HART, FOUNDATION Fieldbus and Profibus PA.
The Honeywell temperature transmitter also supports common temperature sensor types like RTDs and thermocouples course. It also comes with hazardous area certification and SIL2/SIL3 certified.
Simple display, with trending graphs and bar graphs, but they look pretty good for all the simplicity.
SIEMENS SITRANS TF
Last but not least, we have the SITRANS gang from SIEMENS. The SITRANS TF has a few more limitations than the others but offers good cost benefits.
Here, you can read process variables from RTDs, thermocouples, resistance, and millivolts. No surprise there, right? Took me a while to figure that out, though. The documents have too much information on one page, making me crazy. We’ll save that rant for the product review.
You got an integration for the most common protocols, like analog, HART, FOUNDATION Fieldbus and PROFIBUS. It also brings hazardous area certification and SIL2/3. Nothing new here, either, except one fun little bit – you can choose between intrinsically safe or explosion-proof models. Maybe I don’t work in an explosion-prone area, but I still want the explosion-proof one.
Agree? Disagree? Feel free to share your experiences or offer your TOP 5 in the comments.