Checkline TI-CMXDL - Manual (Page 6)

2.4 Probe Zero & One Point Calibration
The next steps are to perform a probe zero and calibrate the TI-CMXDL to the material
and transducer being used. If the sound velocity is unknown, the TI-CMXDL can be
calibrated to a known thickness sample. This demo will briefly explain both of these
techniques.
The TI-CMXDL is equipped with two zero options:
• Off Block Zero (Automatic Probe Zero) – When this feature is enabled the
TI-CMXDL will do an electronic zero automatically, eliminating the need for a zero
disk or block.
• On Block Zero (Manual Probe Zero) – When this feature is enabled the transducer
must be placed on the probe zero disk (battery cover located on the top of the unit.
NOTE: Transducers of the same type will have very slight mechanical and electrical
variations. If it’s discovered that the linearity is off following an initial auto probe zero
and extreme accuracy is required, a
manual zero should be performed
followed by an auto zero. This will
adjust and eliminate any error. This is
only required if it’s discovered the
transducer is non-linear following
an initial auto probe zero.
Both zero procedures are outlined
as follows:
Off Block Zero (Automatic Probe Zero)
1. Be sure all couplant has been removed
from the face of the transducer.
2. Press the OK key to perform the
automatic probe zero, or ESC key
to cancel the zero operation.
3. The screens illustrated at the right
will be briefly displayed followed by
the main measurement screen. The
TI-CMXDL is ready to be calibrated.
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Coating Probe
Identified Coating Probe
Not Identified
Coating Probe
Identified Coating Probe
Not Identified
Performing a Manual Probe Zero (On Block)
NOTE: When the zero probe option is set to manual, the probe
zero disk (battery cap) located on the top of the gauge, will be
used as a zero standard and the warning screen illustrated
above will be displayed.
1. Press the OK or ESC keys to enter the main measurement
screen and begin the manual zero process.
2. Apply a drop of couplant on the transducer and place the
transducer in steady contact with the probe zero disk, and
obtain a steady reading.
12.5 Using the Default Setup
The default setup feature was added to the CMX to use, as a last resort, if there are no
setups stored in the gauge –factory or otherwise. The only time this might possibly occu
if the setup file in the CMX was somehow corrupted, and the user does not have access
computer to re-load the factory setups back into the CMX. This gives the user the ability
load and modify a basic setup as follows:
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 SETUP menu
is highlighted and displaying the submenu items.
2. Use the UP and DOWN arrow keys to scroll through the
sub menu items until DEFAULT SETUP is highlighted.
12.6 Selecting a Language
The CMX is equipped with a language option. Currently, the only languages supported a
English, Spanish, and German. The steps to select one of these languages are outlined a
follows:
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 SETUP menu is
highlighted and displaying the submenu items.
2. Use the UP and DOWN arrow keys to scroll through the
sub menu items until LANGUAGE is highlighted.
3. Press the LEFT and RIGHT arrow keys to toggle the
language options.
4. Once the desired language is displayed, press the MEAS
key to return to the measurement screen.
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