Dakota Ultrasonics MINI--MAX User Manual

Page 24

Dakota Ultrasonics

Important Note: Always be sure to place the transducer in the same exact

location if it will be removed in between reference lengths and elongation

measurements. This will eliminate any potential sound path error caused

by moving the transducer to a completely different location on the bolt, thus

causing potentially erroneous measurements. Be consistent and as

methodical in your methods as possible. This will help to avoid transducer

placement errors.

5) Press the AUTO SET key, located in the bottom left corner of the

keypad, to locate the detection point, or end of the bolt.

6) Press the ENTER key to save the current approximate length in the

highlighted cell location.

Note: If the measurement was saved in error, press the CLR key at

anytime to clear the stored reading and re-measure using the steps 4 – 6

above.

Note: The Group View Box can be aborted at any time by pressing the

MEAS key.

3.7 Measuring Elongations

Now that the reference lengths have been measured and saved, we’re ready to
start measuring elongation values. We’ll start off by assuming the bolt has been
stretched or tightened, the transducer has been once again coupled to the bolt in
the same location as before, and we’re ready to measure the elongation as
follows:

Measuring an Elongation

Important Note (recap): Always be sure to place the transducer in the

same exact location if it will be removed in between reference lengths and