Dakota MAX II, Operation Manual

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MAX II Bolt Tension Monitor
49

The MAX II should be sent in for calibration by Dakota Ultrasonics, or other
authorized service representative, on a periodic basis to verify proper operation of
the instrument. Dakota Ultrasonics recommends one-year intervals.

Depending on the how critical the application is, bolts should be calibrated in a lab
against a known load prior to measuring. A temperature bath should also be used
to determine the necessary temperature factors required.
The following sections are typical methods of how to perform and calculate a probe
zero using the
MAX II . The proper method should be determined by the level of
accuracy required and the specifications and conditions of the application itself.
8.3 Creating a Group to Document Zero (Calibration) data
The first step is to setup a group to document our probe zero data. By doing this, all
the values and settings will be saved to the cell location for easy recall at a later time.
This will allow the user to easily verify the zero value and make any necessary
changes to the
MAX II , by adjusting the zero value or temperature depending on the
circumstances or conditions.
Note: This section applies to all the Zero/Calibration options (auto, using a stand
alone bolt, and 3” & 6” cal bars / glass block.
Creating a Zero/Cal Group Name
Note: Select a name that references this group to Cal Data .
1) Press the MENU key once to activate the menu items tab. Press the MENU
key multiple times to tab right, and the ESC key multiple times to tab left,
until the DATA menu is highlighted and displaying the submenu items.
Alternatively, press the LEFT and RIGHT arrow keys multiple times
using the left button wheel.