Single Traverse Installation At Transducer Spacing Range 0 To 250Mm - GE AT600 User Manual

2.4.2c

Single Traverse Installation at Transducer Spacing Range 0 to 250mm

When the transducer spacing range is from 0 to 250mm in a single traverse installation, two clamp-on fixtures are
needed for this installation. See the steps below for the single traverse installation guide.
1. Mark one straight line parallel with the pipe direction on the pipe surface, use a band tape to measure the
circumference of the pipe, and mark another two lines on position of +1/4 and -1/4 of circumference. This
creates two lines for two fixture alignment;
2. Install two straps onto the pipe with about 30 cm/1 ft apart from each other.
3. Put one clamp-on fixture embedded with two transducers and one cable onto the pipe and move the two straps
on two sides of the clamp-on fixture to catch the holder on the fixture, then put another blank fixture onto the
opposite side of the first fixture and hold it by the two straps,. Align the middle of the two fixtures with the red
straight line marked on the pipe surface in step 1.
Figure 18: Fixture Installation of Single Traverse at Transducer Spacing Range 0 to 250mm
4. Set spacing between the two transducers and tighten back onto the pipe.
a. Loosen hand rails and rotate fixture so transducers are in view.
b. Take out the upstream transducer from the first fixture, disassemble the transducer connection and route the
cable into the second fixture, and connect and re-locate the upstream transducer into the second fixture.
Note: Put upstream transducer at "zero" position of the second fixture, and then move the downstream transducer at
the required position of the first fixture. The separate cable of the upstream transducer needs to be pulled out
from one side of rail on first fixture and put into the side of the rail on second fixture; refer to the cabling on the
fixture done by the plant.
Figure 19: Single Traverse Installation at Transducer Spacing Range 0 to 250mm
AT600 User's Manual
Chapter 2. Installation
13