GF PORTAFLOW 330, Instruction Manual

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Installation Instruction manual
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Do not expect to obtain accurate results if the transducers are positioned close to any
obstructions that distort the uniformity of the flow profile.
6.2 Transducer Attachment (Type ‘A’ & ‘B’)
The use of chains to fix the guide rail to the pipe can be eliminated on steel pipes by using
the optional magnetic guide rails. In all other respects the setting up of the sensors is the
same as for standard guide rails.
Type ‘A’ & ‘B’ transducers are fitted to adjustable guide rails which are secured to the pipe
using wrap-around chains and mechanically connected together by a steel separation bar.
The separation bar also acts as a ruler to allow the distance between the transducers to be
accurately set to the value determined by the Portaflow instrument.
When fitting the guide rails it is easiest to assemble them onto the separation bar and adjust
to the required separation distance before attaching them to the pipe.
6.2.1 Preparation
1. Before you attach the transducers you should first ensure that the proposed location
satisfies the distance requirements shown in Figure 2.1 otherwise the resulting accuracy
of the flow readings may be affected.
2. Prepare the pipe by degreasing it and removing any loose material or flaking paint in
order to obtain the best possible surface. A smooth contact between pipe surface and the
face of the transducers is an important factor in achieving a good ultrasound signal
strength and therefore maximum accuracy.
NOTICE
NOTICE