 |
|
GE Introduces Correlation Tag Clamp-On Gas Ultrasonic Flowmeter
Waltham, Massachusetts, April 20, 2004 - GE Infrastructure Sensing, a leading provider of precision sensing products, systems and services, today introduced the DigitalFlow TM CTF878, a state-of-the-art clamp-on flowmeter for gas. The patent-pending CTF878 employs ultrasonic flow pattern recognition, or correlation tag technology - a first for ultrasonic gas flow measurement.
The CTF878 brings clamp-on flow measurement techniques to metal pipes down to atmospheric pressure. Other ultrasonic clamp-on gas flowmeters use transit-time technology. Correlation tag technology gives the CTF878 the ability to operate at lower gas density than transit-time meters and with no restrictions of pipe size or gas composition.
The CTF878 measures gas flow non-invasively in pipes from six to 30 inches in diameter, over the range of 3.5 to 150 feet per second (1.1 to 46 meters per second). It is designed for applications such as natural gas transmission and distribution, compressed air, fuel gases, corrosive or toxic gases, high-purity gases, and air separation gases.
Correlation tag flow measurement uses four clamp-on ultrasonic transducers arranged in two pairs, mounted externally on a pipe. Each pair includes a transmitter and a receiver. The transmitters send an ultrasonic signal in a continuous wave mode through the fluid to the receivers, forming an interrogation path. The continuous wave signal is modulated by turbulence and local density variations characteristic of moving gas, producing a unique turbulence signature. The flow velocity is then determined from time and distance measurements.
"Correlation tag technology is effective in gas applications because of the compressibility of gases, which helps create the distortion of the ultrasonic signal needed for the flow measurement technique," said Paul Ceglia, flowmeter product line manager for GE Infrastructure Sensing. "The CTF878 gives customers the ability to handle a significantly wider range of clamp-on gas flow applications than was possible before."
About GE Infrastructure
GE Infrastructure is a high-technology platform comprised of some of the fastest-growing businesses within GE. With 2004 revenues expected to approach $3.5 billion, they represent a set of advanced protection and productivity solutions to some of the most pressing issues that industries face - pure water, safe facilities, plant automation and detecting changes in the operating environment. GE Infrastructure is headquartered in Wilton, CT.
About GE Infrastructure Sensing
GE has united the technological innovation and experience of industry leaders in the design and manufacture of advanced sensing and measurement solutions into one world-class business - GE Infrastructure Sensing. This new business, with operations around the world, offers a broad range of products and services that help customers solve challenges and drive productivity.
GE Infrastructure Sensing’s precision instruments and systems measure temperature, pressure, liquid level, humidity, gas concentration, and flow rate for applications ranging from environmental, medical and pharmaceutical to automotive, aerospace, chemical and petrochemical. Using technologies such as infrared detection, ultrasonics and MEMS, GE Infrastructure Sensing helps customers monitor, protect, calibrate, control and validate their critical processes and applications.
GE Thermometrics, GE NovaSensor, GE Panametrics, GE General Eastern, GE Kaye, GE Druck and GE Ruska are now under one name: GE Infrastructure Sensing.
|
|
|
|
