Checkline TI-UMX2 - Manual (Page 19)

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Pulse Echo Coating Mode – Coating On (PECT)
A custom hybrid combination mode using properties from the basic modes along
with a group of special techniques and theoretical wave phenomena’s to measure
coating and material thicknesses at the same time, while still retaining the ability
to locate flaws and pits in materials. Therefore, the best description for this hybrid
mode is Pulse-Echo Coating mode.
Pulse Echo Coating Mode – Coating On (PECT)
A custom hybrid combination mode using properties from the basic modes along
with a group of special techniques and theoretical wave phenomena’s to measure
coating and material thicknesses at the same time, while still retaining the ability
to locate flaws and pits in materials. Therefore, the best description for this hybrid
mode is Pulse-Echo Coating mode.
Single Element Triple Echo Mode – Time Corrected Gain (TCG)
The TCG mode measures between 3 reflections. Similar to E-E mode, this technique
is commonly used to eliminate errors from surface coatings and also to make
measurements in multiple layered materials. The primary benefit of this mode, is
that a comparison is made, between the 2nd
and 3rd echoes, to verify that a peak jump has
not occurred, providing an additional level
of confidence to the measurement. Generally
the disadvantage is that 3 reflections are
needed which requires the use of gates
with controllable thresholds to adjust for
sensitivity over a given measurement range.
However,฀the฀time฀corrected฀gain฀feature฀built฀
into this mode, automatically adjusts the gain
setting for each individual echo reflection.
Therefore all three return echoes are equal in
amplitude or overall signal strength.
Dual Element Transducer in Triple Echo
(TCG) Mode
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11.4 Connecting to a PC
Now that the log file has been created and saved on the PC, the next step is connecting
to a PC to transfer the template file into the TI-UMX2. There are 2 cables included with
the TI-UMX2 kit; LEMO to 9 pin serial and 9 PIN serial to USB.
Serial:
The LEMO to 9 pin RS232 cable can be connect directly to any serial port.
However,฀the฀serial฀port฀number฀must฀be฀known.฀The฀actual฀port฀reference฀can฀be฀
obtained in the device manager of a Windows® based operating system.
USB:
Both the LEMO to 9 pin serial and 9 pin serial to USB can be connected together
to use the serial to USB converter configuration. This option requires that a driver
is installed for the USB cable. The driver will automatically be loaded when
DataComm฀PC฀software฀is฀installed.฀However,฀the฀driver฀iles฀will฀also฀be฀included฀
in฀the฀‘examples’฀folder฀on฀your฀desktop.฀This฀folder฀is฀created฀by฀DataComm฀when฀
installed.
The following procedure outlines the steps for connecting and transferring the template
file to the TI-UMX2 as follows:
Uploading the Log File
1. Remove the bottom end cap of the TI-UMX2, in order
to access the LEMO data jack. Remove the rubber
plug from the data jack.
2. Plug the LEMO connector into the data jack.
noTe: align the red pin on the connector with the data jack.
3. Plug the RS232 into a serial port, or the USB connector into a USB port on the PC.
4. Start the DataComm utility software.