2: Installation
Portaflow 220 User Manual 9
(Issue 1.0)
3. On each guide rail, attach one end of a securing chain to a hook on the tensioning bar (B), wrap the chain
(G) around the pipe and then attach it to the hook on the other end of the tensioning bar whilst keeping
the chain as tight as possible.
4. Rotate the complete guide rail assembly so that it is approximately 45° with respect to the top of the pipe.
Then tighten the chain by turning the tensioning thumb-wheel (A) on each guide block until the assembly
is securely attached to the pipe.
Note: If you are unable to get sufficient tension on the chain to hold the assembly in place, fully slacken
the tensioning thumb-wheel and shorten the effective length of the chain wrapped around the pipe by
connecting the tensioning bar to the next link in the chain, then re-tension.
2.2.3 Fitting the transducers
Figure 2.3 Fitting the transducers
1. Slide the transducer cover plate (A) fully towards the outside of the guide assembly to allow sufficient
access to fit the transducer.
2. Clean the face of the transducer, removing all traces of dirt and grease.
3. Apply a 3mm bead of ultrasonic couplant along the centre length of the transducer (E).
4. Fit the transducer into the guide block – ensuring the lugs on the sides of the transducer are correctly
located into the slots on the sides of the guide block (B).
5. Slide the transducer cover plate (A) over the top of the transducer and tighten the thumbscrew (C) finger
tight to secure the transducer in place. When securing the cover plate take care to leave sufficient room
around the transducer connector (D) to connect the cable.
6. Repeat the above steps for the second transducer.
7. Connect the transducers to the Portaflow instrument using the coaxial cables provided. The RED cable
must be connected to the upstream transducer and the BLUE cable to the downstream transducer.
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