Tokyo Keiki UFP-20, Installation & Operation Manual

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4C-a. Wrap gauge paper
Wrap gauge paper around the pipe where you intend to make the flow measurement as
shown in Fig.1.2.9-58.
Make sure the paper is long enough to overlap and that the overlapping edge is square.
Gauge paper may be ordered and included in the standard installation kit.
Fig. 1.2.9-58 Wrap gauge paper
4C-b. Mark slit
Mark the pipe on either side of the paper where it overlaps (points
“A” in Fig. 1.2.9-59).
Fig. 1.2.9-59 Mark slit
4C-c. Mark ½ line
Remove the paper from the pipe. Fold the paper in half, aligning the mark with the square
edge of the paper. Crease and mark along the fold. Alternately, you can measure half the
distance between the mark and the squared end and draw a line. Measure and confirm the
circumference of the pipe.
Fig. 1.2.9-60 Mark ½ line
A
1/2circle
A
Mark line
Marked line
A
’
A
’