Dynasonics UFX ULTRASONIC FLOW METER User Manual

Page 9

B. MOUNTING LOCATIONS ON THE PIPE

If the transducer is applied to
horizontal pipe, choose a
m o u n t i n g p o s i t i o n a t
approximately 3 o’clock or 9
o’clock, assuming 12 o’clock to
be to top of the pipe. These
positions typically provide
optimum acoustic penetration
into the moving liquid. As
illustrated in Figure 2,
placement at the top or bottom
of the pipe can result in poor
sound penetration due to air
pockets (on the top of the pipe)
or sediment (at the bottom of
the pipe).

If the transducer is applied to vertical pipe, orientation does not matter.

C. PIPE PREPARATION

Before the transducer face can be coupled to a pipe surface, an area
slightly larger than the flat surface of the transducer must be cleaned to
bare metal on the pipe. Remove all scale rust and paint. Thoroughly dry
and clean the mounting surface.

NOTE: For plastic pipes, such as PVC or PVDF, pipe preparation
is typically not required.

D. CONNECTING THE TRANSDUCER

Connect the transducer plug into the transducer jack. The connection is
polarized, so alignment of the keyway is necessary.

NOTE: The splash-resistant environmental seal is provided only when
the transducer plug is secured into the transducer jack. It is advisable
to make this connection before entering an area where the UFX may be
dropped into or splashed with liquid.

E. APPLYING THE TRANSDUCER

To ensure an acoustically conductive path between the transducer face
and the prepared pipe surface, a coupling compound is employed.
Enclosed with the UFX flow meter is a tube of Dow Corning 111 silicone
based grease. This grease is adequate for the majority of installations.
If an alternate grease is utilized, the grease must be specified not to
flow at the temperature of the pipe surface or the ambient conditions.

YES

Figure 2

YES