Dual-rotor turbine flowmeter for subsea and topside applications

Bearing diagnostics and built-in redundancy suited to critical and inaccessible installations.

05/21/2009


Exact Flow, a supplier of precision flowmeters for demanding applications, has introduced the Dual-rotor Subsea Turbine flowmeter . With a bearing diagnostic capability and wide flow range performance, the meter is a solution for subsea hydraulic pod valve actuation and topside flow applications in the offshore oil industry. In hydraulic fluid applications, it is packaged in a high-pressure, manifold-mounted system with built-in redundancy.

The company says the dual-rotor configuration offers performance not obtainable with traditional single-rotor designs. Additionally, the flowmeter offers other benefits such as bearing diagnostics, improved accuracy, pressure compensation, long-life ceramic bearings, and high-shock internals.

One element that Exact Flow says most users overlook is the peculiar characteristics of hydraulic fluids at high pressures. Normally users treat hydraulic fluids as incompressible; however, when subjected to high pressures, fluid properties vary greatly and have a substantial effect on turbine flowmeter accuracy. The Dual-rotor Subsea flowmeter is calibrated to account for the entire range of temperature and pressure conditions. It includes internal temperature and pressure sensors to correct for these effects and provide the best possible system accuracy.

Moreover, helical rotors optimize energy transfer over the entire surface of the blade, enhancing speed of response to step changes in flow rate. Helical rotors also produce less pressure drop across the flow meter, as compared with the traditional flat-bladed rotor design. The company says this reduction, translated into force, reduces bearing wear, which allows the meter to maintain its original calibration over a longer period of time.

The flowmeter family has a repeatable flow range of up to 500:1 and a turndown range of 60:1. This allows users to deploy fewer flowmeters to cover a wide range of applications. All units shipped are calibrated at Flow Dynamics, Inc., in a NVLAP accredited facility, obtaining uncertainties of &0.05% of rate and

Read more on turbine flowmeters .

—Edited by Peter Welander, process industries editor, PWelander@cfemedia.com ,
Control Engineering Process Instrumentation & Sensors Monthly
Register here to select your choice of free eNewsletters .





No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2015 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
2016 Product of the Year; Diagnose bearing failures; Asset performance management; Testing dust collector performance measures
Safety for 18 years, warehouse maintenance tips, Ethernet and the IIoT, GAMS 2016 recap
2016 Engineering Leaders Under 40; Future vision: Where is manufacturing headed?; Electrical distribution, redefined
SCADA at the junction, Managing risk through maintenance, Moving at the speed of data
Safety at every angle, Big Data's impact on operations, bridging the skills gap
The digital oilfield: Utilizing Big Data can yield big savings; Virtualization a real solution; Tracking SIS performance
Applying network redundancy; Overcoming loop tuning challenges; PID control and networks
Driving motor efficiency; Preventing arc flash in mission critical facilities; Integrating alternative power and existing electrical systems
Package boilers; Natural gas infrared heating; Thermal treasure; Standby generation; Natural gas supports green efforts

Annual Salary Survey

Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.

There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.

But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.

Read more: 2015 Salary Survey

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.
This article collection contains several articles on the vital role of plant safety and offers advice on best practices.
This article collection contains several articles on the Industrial Internet of Things (IIoT) and how it is transforming manufacturing.
This article collection contains several articles on strategic maintenance and understanding all the parts of your plant.
click me