Checkline TI-25DL-MMX - Manual (Page 7)

These eight vertical bars form the Stability
Indicator. When the TI-25DL-MMX is
idle, only the left-most bar and the under-
line will be on. While the gauge is taking a
measurement, six or seven of the bars
should be on. If fewer than five bars are
on, the TI-25DL-MMX is having difficulty
achieving a stable measurement, and the
thickness value displayed will most likely
be erroneous.
When the IN symbol is on, the TI-25DL-
MMX is displaying a thickness value in
inches. The maximum thickness that can
be displayed is 19.999 inches.
When the MM symbol is on, the TI-25DL-
MMX is displaying a thickness value in
millimeters. If the displayed thickness
exceeds 199.99 millimeters, the decimal
point will shift automatically to the right,
allowing values up to 1999.9 millimeters
to be displayed.
When the IN symbol is on, in conjunction
with the /ms symbol, the TI-25DL-MMX
is displaying a sound-velocity value in
inches-per-microsecond.
When the M symbol is on, in conjunction
with the /s symbol, the TI-25DL-MMX is
displaying a sound-velocity value in
meters-per-second.
When the + symbol is on and blinking,
this indicates that the TI-25DL-MMX is
currently operating in echo-echo
(Thru-paint/coating ) mode.
– 7–
1.8.8.8.8
+ IN MM /
µ
s
1.8.8.8.8
+ IN MM/
µ
s
1.8.8.8.8
+ IN MM/
µ
s
1.8.8.8.8
+ IN MM/
µ
s
1.8.8.8.8
+ IN M M /
µ
s
1.8.8.8.8
+ IN MM/
µ
s
– 26 –
7. Press the CAL key again and the acoustic velocity units indicator
“IN/µs” or“M/s” will be flashing showing the acoustic velocity
value that was calculated for this sample. If desired, record this
value so it can be re-entered easily in the future.
8. Press the CAL key again to exit the calibration mode and return to
the measurement mode.
Note: If the CAL key is pressed while in the calibration mode, the
TI-25DL-MMX will be reset to the factory default calibration for common
steel (0.2330 IN/µs or 5920 M/s).