Clamp-on flow metering for gas

The TransPort PT878GC flowmeter is a highly versatile, self-contained, portable transit-time system with options and accessories to meet a variety of gas flow measurement needs. Its compact size, lightweight, rechargeable battery pack, and universal power supply charger make it the ideal go-anywhere flowmeter. Historically, clamp-on flow metering was limited to liquids because existing methods could not work on metal pipes containing gases. GE developed new technology that extends all the benefits of clamp-on flow metering to gas measurement. This remarkable ultrasonic technology works with gases at high or low pressure in pipes made of metal and most other materials. The TransPort PT878GC 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, causes no pressure drop and has very wide rangeability. Quick and easy to use It's possible to make the first flow measurement witin minutes of opening the box - the TransPort PT878GC flowmeter is that easy to use. Input the site parameters, clamp the transducers onto the pipe, and adjust the spacing. No ancillary equipment is needed, and there's no need to break into the pipeline. An experienced user can make scores of different measurements in a single day. The TransPort PT878GC flowmeter is ideal for all kinds of flow survey work. Transit-Time Flow Measurement Technique The transit-time technique uses a pair of transducers, with each transducer sending and receiving coded ultrasonic signals through the fluid. When the fluid is flowing, signal transit time in the downstream direction is shorter than in the upstream direction; the difference between these transit times is proportional to the flow of velocity. The TransPort PT878GC measures this time difference and uses programmed pipe parameters to determine flow rate and direction.

Applications

Natural gas

Corrosive gases

Compressed Air

Toxic gases

Fuel gases

High-purity gases

Erosive gases

Air separation gases