Product category:
Flowmeters and Flow Sensors
News Release from: GE Sensing - Panametrics | Subject: DigitalFlow GC868 clamp-on gas flowmeter
Edited by the Engineeringtalk Editorial
Team on 12 October 2001
Clamp-on flowmeter for gas pipes at last
A world's first is claimed for the Panametrics DigitalFlow GC868 clamp-on gas flowmeter, an ultrasonic meter for the flow of any gas, at high or low pressure, in metal and plastics pipes
A world's first is claimed for the Panametrics DigitalFlow GC868 clamp-on gas flowmeter, an ultrasonic meter accurately measuring the flow of any gas, at high or low pressure, in metal and plastics pipes, and offering wide 100:1 rangeability Breaking the traditional clamp-on's limit to liquids only, its patented technology has been successfully tested on 3 to 36in pipelines with air, hydrogen and natural gas, and can be applied to any gas in pipes of nearly any material
This article was originally published on Engineeringtalk on 23 Jul 2002 at 8.00am (UK)
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High accuracy of +/-2% of reading and a repeatability of +/-0.5%, have been demonstrated by the unit's patented correlation transit-time detection techniques.
Operating temperature range is -40 to +149C for the transducers and -10 to +55C for the electronics.
Ultrasonic transducers of stainless steel and plastics are acoustically coupled to the outside of the pipe, with no penetration of the pipe wall.
This method is especially useful for metering erosive, corrosive, toxic, high-purity and sterile gases, or wherever it is undesirable to break the pipe wall boundary.
Installation costs are significantly reduced by eliminating pipe cutting or tapping.
The absence of moving or wetted parts means that no regular maintenance is required and there is no pressure drop.
Systems comprise the electronics, two clamp-on ultrasonic gas transducers with mounting fixture and a preamplifier.
An integral keypad-programmable flow computer calculates velocity and other flow parameters in real time, simultaneously handling other activities such logging, data output and diagnostics.
Data logging memory is 43,000 data points in linear or circular format, with keypad programming of log units, interval, start and stop times.
The standard single channel unit and a dual channel version for measuring gas flow on two separate pipes or two paths on a single line both have two independent software configurable LCD graphic displays.
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