Am Instru Q-FP 201, Руководство пользователя

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signals. Since the difference is very small, the spacing and the alignment of the transducers are
critical factors to the accuracy of the measurement and the performance of the system. Meticulous
care should be taken for the installation of the transducers.
Steps to the installation of the transducers
(1) Locate an optimum position where the straight pipe length is sufficient, and where pipes are
in a favorable condition, e.g., newer pipes with no rust and ease of operation.
(2) Clean any dust and rust. For a better result, polishing the pipe with a sander is strongly
recommended.
(
3
) Apply adequate coupler to the spot where the transducers are to be installed and leave no gap
between the pipe surface and the transducers.
Extra care should be taken to avoid any sand or dust particles left between the pipe outer surface
and the transducers.
To avoid gas bubbles inside the upper part of the pipe, the transducers should be installed
horizontally by the side of the pipe.
§2.7.1 Transducers Spacing
The spacing value shown on menu window M25 refers to the distance of inner spacing between the
two transducers. The actual transducers spacing should be as close as possible to the spacing value.
§2.7.2 V-method Installation
V-method installation is the most widely mode for daily measurement with pipe inner diameters
ranging from 15 mm to 400 mm. It is also called reflective mode.
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INSTRU Q-FP 201
Handheld Ultrasonic Flowmeter