Buyer guide: Prowirl Proline F 200 vs Rosemount 8800
Differential flow meters have ruled the market for a long time because easy, cheap, and efficient makes an near-bulletproof combo. And the multivariable pressure transmitter sat atop this heap until the vortex meter came into existence. So can vortex usurp the throne? We have two potential successors here, the Prowirl Proline F 200 from Endress+Hauser and the Rosemount 8800 from Emerson.
Let’s find out.
Prowirl Proline F 200
We’ll start with Endress+Hauser’s candidate, which the company claims has “best-in-class accuracy.”
The Prowirl Proline F 200 has a lot of tricks up its sleeve. Just when you think you know it all, you find a new feature that makes your job twice as easy.
It uses Endress+Hauser’s standard interface, which means anyone who has used an E+H meter before feels right at home. Of course, what one person calls familiar another may call stale, so your mileage may vary.
As a loop-powered device, it doesn’t need a dedicated power source because it can use the loop current, which means one cable for power and communication. And one cable = no more tangles, plus less kinking and damage!
You also get a ton of options for variables like volume, mass flow, energy flow, and more. Plus, it has a range from two to 32,166 cubic meters per hour in steam at 180 degrees Celsius and 10 bar of pressure and an error margin in volume flow of one percent and mass flow of 1.7 percent.
On the down side, I had trouble finding info and documents on the website. This happens a lot more than it should in the 21st century, so vendor sites need to keep up with the times!
The Prowirl Proline F 200 uses a differential capacitance sensor (DCS) to measure the vortex. It also has a built-in temperature sensor, a really nice extra if you hate buying accessories.
As for protocols, you get PROFIBUS PA, FOUNDATION Fieldbus (FF), or HART. And if you have an older system, then you can have analog, pulse, frequency, and switch output.
On the whole, it looks okay, although I don’t like the fragility of the cable connection.
A lot of steam meters measure steam accurately, but how many can measure the quality of the steam? The F 200 can. Blown away? I sure am.
This feature can save money and improve plant safety. If you have poor steam quality, then you get condensate in the pipes. That’ll make your boiler work harder, and you know what comes next if it gets worse. But the F 200 can show you a quality decline in time for you to get in there and fix it before it becomes a hassle, or worse, an accident.
Endress+Hauser provides two options for steam detection. The wet steam detection sets off an alarm at 80 percent or lower, and the wet steam measurement monitors quality on the local display or remotely. The device will correct the mass and energy outputs by correcting the condensate. And believe me, this feature is a game changer in steam flow measurement.
Last but not least, this gadget offers health monitoring with E+H’s Heartbeat technology. So you can improve your preventive maintenance with a detailed report on the F 200’s sensor, electronics, and output.
Emerson wields a lot of clout in the flow market with its Rosemount line. Let’s check this entry out and see how it fares.
The Rosemount 8800 creates a benchmark in high accuracy and robust design for liquid and steam flow measurement. And the optional temperature sensor can save you money on buying and installing a separate device.
However, you’ll have to spend that money on a handheld instead, as the display doesn’t allow local configuration. In protocols, you can connect using HART, FF, analog, or pulse output. Too bad it doesn’t have PROFIBUS PA to bring it up to par with its competitors.
It has good chemical compatibility, though, with materials like stainless steel, nickel alloy, carbon steel and more.
The Rosemount 8800 can measure steam, gas, or liquid flow with great precision, as I said. It has an accuracy of around two percent of mass flow in steam and one percent of volumetric rate for gas and steam. However, it has greater accuracy in liquids, less than one percent for mass and volumetric rate.
However, if you need pressure measurement in your application, then the 8800 falls a little short. You need to combine it with a pressure transmitter and a flow computer. And the flow computer only supports analog. So you’d need to convert HART to analog to send flow, temperature, and pressure data to the computer or buy three different transmitters. Come on Emerson! Do it digitally!
This device does offer a nice feature in sensor exchange to compensate. You can swap sensors without stopping your process. It’s kinda fun, actually.
The 8800 has some nifty tech like the SMART fluid diagnostic, which detects changes in the product, such as gas to liquid. It also runs on loop power, making it easy to install and repair. Plus it has adaptive signal processing, giving it vibration immunity and flow range optimization.
Finally, it also offers device diagnostics and meter verification. You get a fairly solid package for flow measurement and simulation.
Table of comparison
Prowirl Proline F 200
standard design = user comfort, fast setup
simple yet robust design, high accuracy
HART, PROFIBUS PA, FF, analog, pulse, frequency, and switch
HART, FF, analog, and pulse
good materials and class 300 pressure; -40 to 260 degrees Celsius standard, -200 to 400 optional
good materials; -200 to 427 degrees Celsius, class 1500 pressure; line sizes from 1.5 to 12 inches
built-in sensor with external cable
Steam flow measurement
“Steam specialist” = wet steam detection and measurement
SMART fluid diagnostic
General information and documentation
weak site; no mobile access and info hard to find
good site; mobile version and microsites
Basically, these meters offer great tech, with their smart electronics that make automation neat and easy. Both Endress+Hauser and Emerson lead the field in instrumentation, and these devices uphold their reps.
Yes, the 8800 could do with an internal temp sensor and PROFIBUS PA. And Endress+Hauser could support its F 200 with a better website. So if any of these points count as deal-breakers or -makers for you, then you can pick the other easily. If not, then you could flip a coin and get a good device here.