October 9, 2012

Vortex for Steam Flow Measurement

Vortex flowmeters are a common method of measuring steam in process and utility applications. The advantages of vortex technology have been confirmed with over 25 years of installed experience.
Rosemount Vortex Flowmeter.

Following are facts about Rosemount Vortex Measurement technology:

Easy installation. For steam measurement, the Rosemount vortex meter is easy to install with standard flange connections. All you have to do is put in your gaskets, bolt in the meter body, and wire up the transmitter. The meter comes factory configured for the application. There are no impulse lines to worry about and no need to zero the flowmeter for installation effects.
Low maintenance. With no gaskets in the meter body, the Rosemount vortex meter design eliminates the potential for leaks. There is no need to heat-trace impulse lines, which are often required with steam applications, and no need to re-zero the transmitter for head effects. Plus, the Rosemount vortex flow and temperature sensors are isolated from the steam flow and independent of each other. This means that, in the unlikely event of a sensor failure, there is no need to shut down the process and only the failed sensor needs to be replaced.
Rangeability. Vortex is a linear measurement technology, which lends itself to a wide range of turndown. The official stated range of turndown is 30:1; at the extreme end of the sensor limits, 60:1 turndown can be achieved. The reducer vortex design can be utilized to measure very low flow rates at times of minimal steam demand.
Highly accurate. As a direct volumetric flow measurement technology, Rosemount vortex delivers a measurement accuracy of ±1.0% of rate in steam. In temperature compensated mass flow, accuracy is ±2.0% in saturated steam.

If you are interested in learning more about vortex measurement and how it can deliver lower total cost of ownership and higher energy efficiencies, take some time to visit with Brad Burton and Scott Hunt in the Rosemount Flow area of the exhibit hall.