Differential pressure (DP) is one of the most used and proven technologies for flow measurement. With averaging pitot tube (APT) technology, the impact pressure is sensed on the front of the device as the flow initially approaches the obstruction or bluff body which creates the pressure difference. For the most accurate measurement possible, it is essential to accurately measure the changing characteristics of the velocity flow profile. An integrated reading of the flow velocity profile samples across the full diameter of the pipe and produces a more accurate representation of the average velocity.
Rosemount Annubar flowmeters minimize this pressure drop to save energy and perform real-time mass and energy flow measurements with integral temperature design. The team managing the Rosemount measurement brand put together a series of “how to” videos on the installation process—tool requirements, device orientation guidelines, installation via Pak-Lok mounting, and Flo-Tap flowmeter installation.
In the first video, Tool Requirements and Receiving Guide (4:15 runtime), Emerson’s Mike Montgomery explains the tools required to install an Annubar Averaging Pitot Tube, as well as Inspection process recommendations upon receiving a new flowmeter.
In the second video, Orientation Guidelines and Preparation (runtime 6:48), Mike shows where to mount a flowmeter based upon application type, orientation options, and straight run requirements based on the type of gas or liquid to be measured. It also describes proper mounting hardware installation procedures.
In the third video, Pak-Lok Flowmeter Installation (2:48 runtime), Mike describes the proper installation procedures to follow during the mounting of a Rosemount Pak-Lok Annubar Averaging Pitot Tube Flowmeter. This compression design firmly secures the Annubar sensor to the opposite wall of the pipe.
In the final video, Flo-Tap Flowmeter Installation (5:53 runtime), Mike describes the proper installation procedures to follow during the mounting of a Rosemount Flo-Tap Annubar Averaging Pitot Tube Flowmeter. The Flo-Tap Annubar assembly can be hot-tapped without interrupting process flow and does not require a shutdown of the process to install a flowmeter.
You can connect and interact with other flow measurement experts in the Flow track of the Emerson Exchange 365 community.