The Double-Traverse Method - Mcf - GE C-PT Installation Manual

5.4b The Double-Traverse Method - MCF
The Double-Traverse MCF consists of two blocks connected by two rods (one of the two rods acts as a scale or ruler to
help you properly space transducers). Both blocks are adjustable. This type of fixture has two transducer blocks and
like the magnetic blocks, both are adjustable.
The procedure for mounting the MCF involves setting the transducer spacing and then securing the fixture to the pipe.
WARNING! Do not use the MCF at temperatures that exceed 120°F (49°C), or the fixture will fall off the pipe.
To install the MCF in a double-traverse configuration:
Note: The instructions that follow can be used for a multiple-traverse method. However, you must use an EVEN
number of traverses. The distance the signal travels from one side of the pipe wall to the opposite side of the
pipe wall is considered one traverse.
1. Obtain the transducer spacing dimension S, as described in the programming section of the Startup Guide.
2. Be sure the location you have chosen for the installation has at least 10 pipe diameters of straight, undisturbed flow
upstream and 5 pipe diameters downstream of the measurement point.
3. Prepare the pipe where you intend to place the clamping fixture by making sure it is clean and free of loose
material. Sanding, though usually not required, may be necessary to take off any high spots. Be careful to preserve
the original curvature of the pipe.
4. Using the scale on the rod, move the blocks so they are located a distance equal to the spacing dimension from each
other. To move the block, loosen the red thumb screws, slide the block to the desired location and tighten the thumb
screws. Use the pressure bolt or the edge of the block as the measuring point for the block.
C-PT Ultrasonic Flow Transducer Installation Guide
S
S
S
Select one method to set spacing
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