Panametrics clamp-on gas ultrasonic flowmeter DigitalFlow™ GC868

Historically, clamp-on flow metering was limited to liquids because existing methods could not work on metal pipes containing gases. Several years ago Panametrics developed a new technology that extends all the benefits of clamp-on flow metering to gas measurement. This breakthrough clamp-on gas flowmeter technology has continued to improve, resulting in the second generation of the DigitalFlow GC868 flowmeter. This remarkable ultrasonic flowmeter works with gases at high or low pressure in pipes made of metal and most other materials. The DigitalFlow GC868 flowmeter can be used to measure the flow of any gas. It is especially useful for metering erosive, corrosive, toxic, high-purity or sterile gases, or in any application where penetrating the pipe wall is undesirable. Since no tapping or cutting of the pipe is required, permanent installation costs are significantly reduced. The meter has no wetted or moving parts, rarely requires maintenance, causes no pressure drop and has very wide rangeability. The new meter was tested extensively on metal tubes with diameters as small as 0.75 in (20 mm) and pipes as large as 24 in (600 mm). Suitable applications for this meter include flow measurements of air, hydrogen, natural gas, and many other gases. Using patented Correlation Transit-Time™ detection techniques, demonstrated accuracy is superb at better than ±2 percent of reading with ±0.5 percent repeatability. A DigitalFlow GC868 system comprises the DigitalFlow GC868 electronics, a pair of advanced clamp-on gas ultrasonic transducers, a preamplifier, and a clamp