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5. Apply a thin coat of an ultrasonic couplant to the two transducers.
When applying the couplant, apply only the smallest amount necessary
to allow for the couplant to be spread out in a very thin layer, evenly over
the face of the transducer. Applying too much couplant can interfere with
the integrity of the signal that is either transmitted or received by the
transducers.
6. Place the top transducer into the hole in the top cell cap. Compress the
spring and place the spring holder over it. Tighten the screw with a
3/16
"
allen wrench to secure the spring holder in place.
Cell Assembly
1. The test cell is labeled to indicate which end is the top and which is the
bottom. Additionally, you can identify the bottom of the cell by removing
both caps and examining the grooves beneath the threads. The end with
the smaller groove is the bottom of the cell.
The interior of the cell has a taper with the narrow end at the top and the
wide end at the bottom. A hardened cement plug can only be pushed out
of the cell from the top.
Top of Cell
Taper
Bottom of Cell