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NO ECHO ECHO DETECTED
The T-Mike E will display the thickness of the material and the appropriate units of measure (inches or millime-
ters).
NOTE: If the detected echo is of marginal magnitude a question mark ? will appear to the left of the echo
indicator. This will alert the operator that the measurement may be subject to error, and steps should be taken to
improve the transducer coupling or position.
If no echo is detected for a period of 4 ½ minutes, the T-Mike E will automatically switch to its low
power or dormant state as indicated by the display
becoming blank. In this state probe and velocity calibration factors are retained in memory. Operation
may be resumed immediately by pressing the power key.
.F. Measurement Units
The T-Mike E can display thickness in either English or Metric units.
The unit system may be selected during the INITIAL SETUP of the T-Mike E as described previously.
G. Low Battery
The T-Mike E automatically monitors the charge state of the battery to insure that sufficient charge is available
to operate the unit properly.
When the T-Mike detects minimum allowable battery level the numbers on the display will blink on and off. This
alerts the operator that the batteries should be replaced or recharged before further operation.
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