Product review: Rosemount 1066 Single Channel Transmitter

I know, I told you in the last product review and comparison that we were done with the multi-parameter transmitters for now. But I changed my mind! During my search for new devices to discuss on Visaya, I decided to introduce a new brand. Of course, it needed some competition, so I went for an oldie but goodie.

The folks from Emerson Automation Solutions come here so often they’ve made themselves at home. I dug the Rosemount 1066 Single Channel Transmitter out of the entry-level tier in their portfolio, so let’s see how well it does.

You can find tons of these kinds of transmitters on the market, and we’re working on reviewing as many as possible on Visaya. So we’re always searching for new brands and devices and keeping ourselves updated with press releases and whatnot. If you’re new here or just want a refresher, you can open Visaya’s other reviews in a new tab and check those out. Do that later, though. While you’re here, let’s check out this one!

Grab a Quilmes (good beer from Argentina), have a read, and draw your conclusions!

Disclaimer: This product review examines only features, not performance. If you’ve used this device, feel free to share your experience in the comments.

Whatcha got there?

A discussion about design for this kind of transmitter gets boring pretty fast. These products nearly always bring a standard layout, maybe a bigger display or different keypad, but nothing more. The Rosemount 1066 follows this rule, so let’s see if the little details show us some love.

Rosemount 1066 Display
Courtesy of Emerson Automation Solutions

This device reveals your process variable with a nice, long display, 58 x 78 millimeters. Not bad at all. The local keypad and the menu tree keep things simple, if you don’t mind the 80s flashbacks. The datasheet has the device at 155 x 155 x 139 millimeters and a weight of approximately 1.5 kilograms. Sounds about like the rest, doesn’t it? Then it seems like the price may be the deciding factor.

Although I keep expecting multi-parameter devices to have more than one channel, a surprising number don’t. Yes, they do measure more than one parameter, but they only do one at a time. Oh well. On the positive side, the Rosemount 1066 can measure pH/oxidation-reduction potential (ORP), resistivity, conductivity, percent of concentration, chlorine, monochloramine, dissolved oxygen, dissolved ozone, and temperature. Didya get all that? Man, that made me dizzy just thinking about reading that list aloud!

What can it do?

That stuff up there. The Rosemount 1066 can measure all those process variables, and that can save you time in setup, diagnostics and such, versus having different platforms in your plant.

It has polycarbonate as the enclosure material, with a protection level of IP66. Of course, if you work in the food and beverage industry, you may need IP69K. However, IP66 will fit a good range of other applications without any problems.

Furthermore, it has a rich list of standards to cover hazardous areas and other approvals; you can find CSA, ATEX, IECEX, and more. If you work in chemicals, petrochemicals, or similar fields, this device will probably take care of you.

Rosemount 1066 Housing
Courtesy of Emerson Automation Solutions

And loop power always counts as a plus, bringing a significant reduction in structure and cost. You can get that here, along with analog, HART and FOUNDATION Fieldbus communication. As you probably know by now, if it’s Emerson, then forget about PROFIBUS. I don’t get it, but what do I know?

Why should I care?

You did notice this device came from Emerson Automation Solutions,  right? Okay, as an entry option it doesn’t have fancy features, just the basics, but sometimes simple is better.

Anyway, let’s highlight the good points. Super-clean interface and intuitive navigation, so you won’t need the manual all that much. Also, nice display size, although it could use a backlight. At night, you’re gonna need a flashlight.

The manual explains configuration really well, giving you clear steps and the menu tree for the menu configuration. Fault or warning messages flash on the display to get your attention, and you can press the DIAG button to find out what’s going on. Besides the primary variable and warnings, the screen also shows temperature and the digital communication icon.


As an entry model, the Rosemount 1066 does a good job making up for its lack of fancy features with a surprisingly broad range of possibilities. And since it’s from Emerson, it’s a fairly safe bet. So scale it out and see if it fits your specs!

This video gives a few more details about the device:

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