Emerson Rosemount 8800D Series Vortex Flowmeter For Process Applications

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Description

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Product Description

Rosemount 8800 Series Vortex Flow Meters offer world-class reliability with a gasket-free, non-clog meter body that eliminates potential leak points, resulting in maximum process availability and fewer unscheduled shutdowns. The unique design of Emerson's Rosemount 8800 Vortex Flow Meters features isolated sensors that eliminate the need to break process seals for flow and temperature sensor replacement.

Specifications

Flow Meter Accuracy	± 0.65% of volumetric rate for liquids ± 1% of volumetric rate for gas and steam ± 0.70% of mass flow rate in water using MultiVariable option ± 2% of mass flow in steam using MultiVariable option
Turndown	38:1
Output	4-20 mA with HART® 5 or 7 4-20 mA with HART® 5 or 7 and Scalable Pulse Output FOUNDATION; fieldbus ITK6 with 2 Analog Input blocks, 1 Backup Link Active Scheduler function block, and 1 Integrator function block (1 PID function block optional)
Wetted Material	Stainless Steel – 316 / 316L and CF3M Nickel Alloy – C-22 and CW2M High Temp Carbon Steel – A105 and WCB Low Temp Carbon Steel – LF2 and LCC Duplex UNS S32760 and 6A Consult factory for other wetted material options
Flange Options	ANSI Class 150 to 1500 DIN PN 10 to PN 160 JIS 10K to 40K Flanges are available in a variety of facings Consult factory for additional flange ratings
Operating Temperatures	-330°F to 842°F (-200°C to 450°C)
Line Size	Flanged: ½-in to 12-in (15 to 300 mm) Wafer: ½-in to 8-in (15 to 200 mm) Dual: ½-in to 12-in (15 to 300 mm) Reducer: 1-in to 14-in (25 to 350 mm)

Features

•	The unique isolated sensor design allows for replacement without breaking the process seal
•	Increase plant availability and reduce potential leak points with a gasket-free meter body with no moving parts
•	Eliminate downtime and maintenance costs associated with plugged impulse lines with a non-clog meter body design
•	Achieve vibration immunity with a mass balanced sensor and Adaptive Digital Signal Processing with visual filtering
•	A standard internal signal generator included in every meter simplifies electronics verification
•	All meters arrive pre-configured and hydrostatically tested, making them ready and easy to install
•	Simplify SIS compliance with available dual and quad Vortex flow meters
•	Detect liquid to gas phase change using Smart Fluid Diagnostics

Learn About

VON KÁRMÁN EFFECT

Vortex flow meters measure fluid velocity using a principle of operation referred to as the von Kármán effect, which states that when flow passes by a bluff body, a repeating pattern of swirling vortices is generated.

In a Vortex flow meter, an obstruction in the flow path, often referred to as a shedder bar, serves as the bluff body. The shedder bar causes process fluid to separate and form areas of alternating differential pressure known as vortices around the back side of the shedder bar.

FLOW MEASUREMENT

The vortices cause a small sensing element either behind or within the shedder bar to oscillate back and forth at a specific frequency. The velocity of the working fluid is directly proportional to this frequency of the vortices generated by the shedder bar’s unique geometry. With the known cross sectional area of the pipe, volumetric flow can be calculated.

Often Vortex flow meters will also utilize a pressure and/or temperature sensor to achieve a compensated mass flow measurement.

COMMON USES

Vortex flow meters are well suited for a variety of applications across a wide range of industries including oil and gas, refining, chemical and petrochemical, and food and beverage. Vortex flow meters also excel in steam-related applications including steam injection and steam measurement for district energy systems and industrial plants.

SAFETY

For safety-related measurement in SIS applications, dual and quad Vortex flow meters with redundant, independent sensors and electronics are critical for the prevention of common modes of failure and spurious shutdowns. The non-clog, leak-free Vortex flow meter design is ideal in hazardous chemical applications, especially where fugitive emissions are a concern.