Dwyer PSX2 - Manual (Page 141)

132
(3) 2-paths
Gauge paper may is necessary for this work. (Refer to “8.7. How to make gauge paper”.)
• How to determine mounting position
Align this surface.
100mm
Straight line A
A
0
A
0
A
2
200mm
A 0 A 1
B 1 B 0 Straight line B
B 0 , B 1 B 0 , B 1
Match the edge of gauge paper with the line at
about 100mm from one end of the pipe portion
treated for detector mounting, and wind the
gauge paper so that the line marked on the
paper is parallel with the pipe axis (fix with tape
not to allow deviation). At this time, the edge of
gauge paper should be aligned. (1)
Extending the line marked on the gauge paper,
mark straight line A on the pipe. (2)
Mark a line along on edge of the gauge paper.
Assume the intersection of the line and the
straight line A is A
0 .
(3)
V method Z method
Remove the gauge paper and
measure the mounting dimension
from A
0 .
Then, draw a line which crosses
the straight line A (determine the
position A
2 ).
(4)
Measure the circumference of the pipe from the point
A
0 , and mark a line (straight line B) between the point
B 0 and B1 obtained at 1/2 of the circumference.
(4)
A
0
and A
2
become the mounting
positions.
Example) When L = 200mm
Bulletin F-9-PUX2