Tokyo Keiki UFL-30, Installation & Operation Manual

Page: 37 / 166

1-a-5. Using a pencil or marking pen, extend the crease lines outward from each edge of the paper onto
the pipe (at points (1),(2)). With the outside edge of one holder (i.e. edge for P-distance
measurement) which is to be positioned at one edge of the gauge paper, measure and mark off
the P-distance to the other transducer holder as shown in Fig. 1-2-9-6.
After marking, remove the gauge paper.
1-a-6. Position the transducer-mounting holders on the pipe and align in accordance with the lines
marked on the pipe.
Mark the ‘P-distance’ (distance between the opposing
outside edges of the two holders).
The calculated distance between the two transducers
is the fitting distance (‘F-dist’) which is the distance
between the opposing inside edges of the transducers
and which depends on the transducer type, pipe
parameters and fluid type.
See I-2-13, Step (9)-(10) to calculate the "F-dist".
Fig.1-2-9-7 describes "P-distance" and "F-distance".
"P-distance" = "F-dist." - (2
×
"B")
where,
"B" is width from edge of the Transducer to
edge of Mounting holder.
(Refer to Fig.1-2-9-8)
Fig. 1-2-9-5
Adhesive tape
① ②
Crease
Mark P-distance
Position to install Mounting holder
Line marking on mounting holder
Fig. 1-2-9-6
Installation distance
F dist
P-distance
Fig. 1-2-9-7
Fig. 1-2-9-8
B
I- 26