Check-line TI-CMX User Manual page 16

3.11 OK Key
The primary function of the OK key is confirmation of a change or selection.
3.12 ESC Key
The ESC key is used in the MENU, MEAS, and EDIT functions as a back or
escape function.
3.13 Arrow Keys
The Arrow Keys are used to navigate through the menus, increase/decrease values, and tog-
gle specific function keys.
3.14 ENTER key
The ENTER key is used in the menu navigation process to activate lists as well
as edit boxes.
3.15 MULTI MODE Key
The MULTI MODE key opens a measurement mode screen listing all the modes
that are available to the transducer specifically selected. The modes can be all or
a combination of the entire set of modes the TI-CMX offers, depending on which
transducer is being used as follows: Coating Off (P-E), Coating On (PECT),
Temp Comp (PETP), Thru-Coat (E-E), and Coating Only (CT).
3.16 ON/OFF Key
The ON/OFF key simply powers the unit either ON or OFF. Note: Unit will
automatically power off when idle for 5 minutes. All current settings are
automatically saved prior to powering off.
3.17 Top & Bottom End Caps
The top & bottom end panels are where all connections are made to the TI-CMX. The
diagram above shows the layout and description of the connectors:
Transducer Connectors
Refer to Diagram: The transducer connectors, and battery cover/probe zero disk are located
on the TI-CMX's top end cap. The transducer connectors are of type Lemo "00".
NOTE: There is no polarity associated with connecting the transducer to the TI-CMX.
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2. Apply a drop of couplant on a piece of metal and place the coating sample on the me
over the couplant. Apply a drop of couplant on the transducer and place the transduce
in steady contact with the coating and sample or actual test material. Be sure that the
reading is stable and the repeatability indicator, in the top left corner of the display, i
fully lit and stable. Press the MENU key once to activate the menu items tab. Press th
MENU key multiple times to tab right and the ESC key multiple times to tab left unt
the CAL menu is highlighted and displaying the submenu items.
3. Use the UP and DOWN arrow keys to scroll through the
sub menu items until COATING 1PT is highlighted.
4. Press the ENTER key to display the Digits Edit Box.
5. Press the UP and DOWN arrow keys to scroll the highlighted
value.
6. Press the LEFT and RIGHT arrow keys to scroll the digit
locations.
7. Repeat steps 5 & 6 until the known thickness value is correctly
displayed.
8. Press the OK key to calculate the velocity and return to the menu
screen, or ESC to cancel the coating one point calibration.
9. Finally, press the MEAS key to return to the measurement screen and begin taking
readings.
NOTE: CHECK YOUR CALIBRATION! Place the transducer back on the calibration
point. The coating thickness reading should now match the known thickness. If the
thickness is not correct, repeat the steps above.
9.4 Introduction to Coating Measurement (CT)
In the previous sections we've discussed how to setup and use the coating feature for us
in conjunction with material thickness and flaw and pit detection. The TI-CMX also has
capability to be used for general coating measurements. This measurement mode is calle
Coating (CT) and can be enabled using the same methods as described in a previous
section above.
When the Coating Only (CT) mode is enabled, a two point calibration on the coating
samples must be performed. This is to ensure linearity over the coating measurement ran
will be achieved. Important note: If coating measurements will be made with the coating
applied to a metal surface, the calibration must be done in the same manner, with the
samples coupled to a metal surface. However, if the coating will be measured as a stand
alone material, the calibration must be performed the same way.
9.5 Two Point Coating Calibration (CT)
Known Thickness
The following section will demonstrate the two point coating calibration procedure. This
example demonstrates a coating thickness range of .040" - .120" ( 1 – 3 mm) as follows
NOTE: It's always handy to carry a set of mechanical calipers to use in conjunction wit
the TI-CMX for calibration in the field:
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