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Combined vortex flowmeter for steam, gas and liquids

The new Sitrans FX300 vortex flowmeter series of the Siemens Industry Automation Division is equipped with a pressure sensor and a temperature sensor.
By combining these in one unit, the vortex principle is used to measure the temperature, pressure and flow of steam, gases and liquids. The new „All-in-one Solution“ series is thus suitable for a wide range of applications in the chemical and pharmaceuticals industries, food and beverages, oil and gas, and energy generation and district heating. With the new added Sitrans F X flowmeters Siemens now offers technologies for all flow applications in process automation.

The new Sitrans FX300 two-wire flowmeters with Hart communication are specially designed for applications requiring reliable flow measurement independent of pressure, temperature, viscosity and density. These applications include the measurement of steam and saturated steam, monitoring of steam boilers, control of compressor outputs, consumption measurement in compressed air systems, measurement of industrial gases, burner consumption measurement, and SIP and CIP processes in the food and beverages industry or pharmaceuticals industry.

The Sitrans FX300 flowmeters are characterized by high accuracy and reliability. For example, the sensor is fully welded and does not require wear-prone internal gaskets. The operating temperature ranges from minus 40 to plus 240 degrees Celsius (minus 40 to plus 464 degrees Fahrenheit). In the case of steam and gas with flow rates of 2 to 80 meters/second, the accuracy is 1.0 percent, and in the case of liquids flowing at rates between 0.4 and 10 meters/second, it is 0.75 percent. The nominal diameter range is DN15 to DN300 (0.5" to 12").

The Sitrans F X vortex flowmeters work on the vortex measuring principle. This involves detecting the frequency at which alternating vortices are shed from a buff body hit by the medium. The vortices create a force to a sensor wing that moves in proportion to the volume of flow. A sensor with a dual piezoelectric crystal mounted in the wing detects the oscillations precisely and transmits this information to the F X electronics for analysis.

Gerhard Stauß | Siemens Industry Automation
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