Non-Wetted Vortex Sensor for Reliable Flow Measurement

by | Oct 10, 2012 | Event, Measurement Instrumentation

Jim Cahill

Chief Blogger, Editor

20121010-081030.jpgEmerson’s Brad Burton provided a look at technology advancements in vortex flow measurement. His Emerson Exchange presentation abstract:

The Rosemount 8800D Vortex flowmeter’s unique non-clog/non-leak design with a non-wetted vortex sensor enables sensor verification without requiring a process shutdown, maximizing process availability. Rosemount continues to innovate and expand the product breadth of the 8800D Vortex flowmeter. The purpose of this session is to educate the user on new applications where the 8800D Vortex flowmeter can be utilized due to the latest product developments and extensions.

Brad noted that Vortex flowmeters are a common method of measuring steam in process and utility applications. Vortex flow measurement has high rangeability with a turndown ratio up to 60:1. A challenge in conventional vortex meters has been the potential leak points caused by gaskets in the meter body.

With no gaskets in the meter body, the Rosemount vortex meter design eliminates the potential for leaks. Heat-trace impulse lines are not required. They have often been required with steam applications. Their is no need to re-zero the transmitter for head effects.

From an installation standpoint the Rosemount vortex meter has standard flange connections to streamline the process. Put in the gaskets, bolt in the meter body, and wire up the transmitter. The meter comes factory configured for the application. No impulse lines are required to install and maintain and no need to zero the flowmeter for installation effects.

A multivariable measurement option provides temperature measurement for density compensated mass flow rate.

The CriticalProcess vortex sensor is isolated from the process to enhance safety by limiting personnel exposure, and maximizes product throughput by eliminating the need to shutdown the process to maintain a vortex sensor. In addition to being able to maintain the vortex sensor online, the vortex flowmeter can verify the health of the transmitter by simulating the vortex flow signal.

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