Dynasonics PFP-600 - Manual

SECTION 1
PFP-600 TECHNICAL NOTES
The below listed items are a number of technical points to observe when installing a
Dynasonics PFP-600 partially filled pipe flow meter. It is absolutely necessary to follow
these “guidelines” to insure proper operation of the unit!
1. In order to properly install the meter, access to the bottom-dead-center line of a
horizontal ( <4
° ) pipe is necessary. The transducer mounting area should be free
of oxidation, scale, or other foreign accumulations. Clean the mounting surface
down to bare metal when need be.
NOTE: Pipes with well adhered coating such as paint or epoxy will not influence operation and need not
be removed.
2. The transducer cables provided with the unit may be cut to desired length,
however the cables cannot be extended. The maximum cable length available is
50ft.
NOTE: Splicing of the coaxial cables may degrade sensor performance beyond usable levels. The
shielded coaxial leads are designed to isolate the low level signals from undesirable ambient noise and
must be continuous to the transmitter.
3. There must be at least ten (10) straight pipe diameters upstream and five (5)
straight pipe diameters downstream from the transducer mounting location to
maintain the highest level of meter accuracy. Less than these straight pipe
requirements may degrade meter performance.
4. When locating the two transducers on the pipe, the non-connector ends should be
butted up against each other in the track provided. The transducer clamps should
be hand tightened only, over-tightening will squeeze out couplant. The level
sensor should have sufficient couplant to fill the gap between the rubber spacers
when mounted to the pipe. If the mounting location does not allow this
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