DAKOTA ULTRASONICS MiniMax v2.0 Operation Manual page 93

Ultrasonic bolt tension monitor
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41) Apply a drop of couplant to the cal bar or transducer and attach it to one
end of the 3" calibration bar. Make sure it is in the original position when
the measurement was first taken.
42) Press the
43) Press the
Note: Rotate the transducer clockwise and counter clockwise applying a small
amount of pressure to eliminate any excess couplant between the
transducer and cal bar surface. Continue to rotate until the actual length of
the cal standard is being displayed. This ensures the transducer is back to
the original position when the zero measurement was first taken.
40) Press the
key multiple times to move right and the
until the LOG cell is highlighted.to display the CAL DATA group.
41) Press the
42) Press the
the first reading of the 3" cal bar.
43) Press the
Note: The MiniMax is now properly zeroed and ready for action.
This next section demonstrates how to go back and verify if the probe zero value is
still linear and "In Spec" at a later time. It's important to note that user should never
have to change or re-calculate the probe zero value again, unless the MiniMax,
transducer, or cable has been replaced. If the transducer or cable has changed, and
the probe zero value re-calculated, the change in the zero value should be very
small. Therefore, if the zero is re-calculated and the delta is very large, something
else has gone wrong and the user should become suspicious of the how well the
zero/cal was performed.
key to display the measurement screen.
key to automatically setup and measure the 3" cal bar.
key once to activate measure menu items. Press the
key to display the CAL DATA group.
arrow keys multiple times to highlight A1 for
key to store the measurement in location A1.
MiniMax Bolt Tension Monitor
key multiple times to move left
87

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