2009年2月17號-西門子能源和自動化發(fā)布Sitrans FX300漩渦流量計，這是配備了溫度傳感器和一個可選的壓力傳感器。通過結合這些傳感器到一個單位，旋渦的原則是用來測量溫度、壓力和流量的蒸汽、氣體和液體。 新的“All - in - One Solution”系列，適用于廣泛的應用在化學、制藥、食品和飲料、石油和天然氣、發(fā)電和地區(qū)供暖行業(yè)。由于增加了Sitrans外匯流量計，西門子公司目前提供的所有技術的應用流動過程的自動化。 新Sitrans FX300兩線流量計的HART通信的設計適用于需要可靠的流量測量獨立的動態(tài)壓力、溫度、粘度和密度的變化。這些應用包括測量蒸汽和飽和蒸汽、蒸汽鍋爐的監(jiān)測、控制壓縮機的產(chǎn)出、消費測量壓縮空氣系統(tǒng)、測量的工業(yè)氣體、燃燒消費測量與SIP和CIP過程中的食品和飲料工業(yè)和制藥行業(yè)。 新的流量計的特點是高度的準確性和可靠性。例如，傳感器是完全焊接并且不需要穿容易發(fā)生內部墊圈。工作溫度范圍在零下40至另加464華氏度。如蒸汽和氣體流量的2至80米/秒，精度為1.0﹪ ，以及在案件有液體流動的速度0.4和10米/秒，這是0.75﹪ 。標稱直徑范圍為DN15至DN300 （ 0.5 “至12 ” ） 。 外匯的Sitrans工程漩渦流量計測量原理的旋渦。這涉及到檢測的頻率上交替渦的下跌從一個迷身體受到流動的媒介。這些旋渦的力量創(chuàng)造一個傳感器翼移動中所占的比例流量。該傳感器具有雙重壓電晶體安裝在機翼的振動檢測準確和傳遞這一信息的FX電子轉換為實際流量的管道。 關于西門子 西門子能源和自動化公司是西門子在美國運作的公司之一?？偛课挥趩讨蝸喼輥喬靥m大郊區(qū)的Alpharetta。西門子能源和自動化公司為工業(yè)和建筑市場客戶生產(chǎn)和銷售電氣電子產(chǎn)品、系統(tǒng)以及服務，是全球提供最多領域產(chǎn)品的公司之一。其技術含蓋從電路保護和能源管理系統(tǒng)到過程控制、工業(yè)軟件和完整集成自動化解決方案等。在系統(tǒng)集成、技術服務以及全承包的工業(yè)系統(tǒng)，公司同樣具有領先的技術。 [font=times]original text [/font] [font=times]Siemens announces Sitrans FX300 vortex flowmeter[/font] [font=times][color=#708090]February 17, 2009 —— Siemens Energy & Automation announced Sitrans FX300 vortex flowmeter, which is equipped with a temperature sensor and an optional pressure sensor. Through the combination of these sensors into 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 suitable for a wide range of applications in the chemical, pharmaceutical, food and beverage, oil and gas, energy generation and district heating industries. With the addition of the Sitrans FX flowmeters, Siemens now offers technologies for all flow applications in process automation. The new Sitrans FX300 two-wire flowmeter with Hart communication is designed for applications requiring reliable flow measurement independent of dynamic pressure, temperature, viscosity and density variations. 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 beverage industry and pharmaceutical industry. The new 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 range is from 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 internal diameter range is DN15 to DN300 （0.5" to 12"）. The Sitrans FX vortex flowmeter works on the vortex measuring principle. This involves detecting the frequency at which alternating vortices are shed from a buff body hit by the flowing medium. These vortices create a force on a sensor wing that moves in proportion to the volume of flow. This sensor has a dual piezoelectric crystal mounted in the wing that detects the oscillations precisely and transmits this information to the FX electronics for conversion to the actual flow rate in the pipeline. About Siemens Siemens Energy & Automation, Inc. is one of Siemens’ operating companies in the U.S. Headquartered in the Atlanta suburb of Alpharetta, Ga., Siemens Energy & Automation, Inc. manufactures and markets one of the world’s broadest ranges of electrical and electronic products, systems and services to industrial and construction market customers. Its technologies range from circuit protection and energy management systems to process control, industrial software and totally integrated automation solutions. The company also has expertise in systems integration, technical services and turnkey industrial systems. [/color][/font]