The Rosemount 8800 Multivariable Vortex Flowmeter combines your temperature and flow devices into a
single, highly accurate instrument, eliminating the costly installation of two separate devices. And
with its non-wetted sensor design, shutdowns for maintenance or repair aren’t even an issue.
MultiVariable™ Vortex can save up to 30% per installation by eliminating the need for external
temperature compensation for saturated steam applications.
Integral temperature sensor enables temperature compensated mass flow for saturated steam
Removable temperature sensor eliminates the need for process shutdown for temperature sensor verification or replacement
Mass flow, volumetric flow or temperature are available as configurable outputs
Uncompensated vortex meters have moderate accuracy in saturated steam and externally
compensated vortex meters are expensive. The Rosemount MultiVariable Vortex provides a
cost-effective flowmeter with improved accuracy.
Rosemount Reducer Vortex Technology
Many steam applications require flowmeters for low flows due to seasonal or
process demands. Much of the measuring range of traditional vortex is at higher velocities and is susceptible
to missed measurement at low flows due to low flow cutoff. Reducer Vortex eliminates this problem by using a
smaller meter body to achieve the application rangeability required, allowing you to capture steam usage even
at low flow rates.
Increased Plant Availability
Emerson has integrated a temperature sensor into our MultiVariable Vortex meter body that is isolated
from the process and separate from the vortex sensor. This facilitates independent verification or
replacement of each sensor without breaking the process seal.
Plant Availability is further improved by providing the ability to
bring the additional measured and calculated variables back to the
control system for improved process control and monitoring.
Variables can be assigned to the 4-20 mA output, the HART output,
or the optional pulse output.
Reduced Maintenance Costs
Maintenance costs are reduced by using one flow sensor for all line sizes,
eliminating the need for gaskets, and by being able to use one spare temperature
sensor for any line size.
Increased Safety and Environmental Compliance
The MultiVariable vortex flowmeter improves safety and
environmental compliance by keeping both the flow sensor
and temperature sensor from directly contacting the process
fluid. This eliminates the need for additional gaskets and
seals required in many other designs.
By incorporating the temperature sensor in the meter body, a pipe
penetration for an external temperature sensor is eliminated which
further improves safety and environmental compliance.
Easier verification and troubleshooting through device diagnostics
Internal signal generator standard in every vortex for easy electronics verification
Also able to easily accept an external frequency source
Diagnostics constantly monitor health of temperature sensor
The Rosemount 8800 MultiVariable Vortex Flowmeter is suitable for liquid,
gas, and steam applications. The MultiVariable Vortex has all the same great
features of the standard 8800D in addition to the ability to provide multiple,
independent outputs and a temperature compensated mass flow output for saturated steam.
MultiVariable Vortex Applications
Temperature compensated mass flow of saturated steam
Temperature and volumetric flow output as independent variables for
compensation in a flow computer or control system
Volumetric flow as primary output with temperature output for use
in a monitoring application (especially where it may be cost prohibitive to try to install
a separate temperature sensor and transmitter)
PlantWeb® is Emerson's proven digital plant architecture that uses the power of predictive intelligence to improve plant performance
by delivering accurate, actionable information to the right person in time to make a difference. PlantWeb's network of predictive
intelligence enables you to detect process and equipment problems even before they occur.
The net result is that Rosemount devices power the PlantWeb Architecture, or any digital architecture, to higher performance,
greater safety, more productivity, and lower lifecycle costs. Rosemount 8800 products power PlantWeb through Best Sensor and
Transmitter, Best Field Intelligence, and Best Installation Practices.
