Dakota Ultrasonics MMX-6 - Manual (Page 10)

Dakota Ultrasonics
6
The Display
The numeric portion of the display consists of 4 complete digits
preceded by a leading "1", and is used to display numeric values, as well
as occasional simple words, to indicate the status of various settings.
When the MMX-6 is displaying thickness measurements, the display will
hold the last value measured, until a new measurement is made.
Additionally, when the battery voltage is low, the entire display will
begin to flash. When this occurs, the batteries should be replaced.
These eight vertical bars form the Stability Indicator. When the MMX-6
is idle, only the left-most bar and the underline 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 MMX-6 is having difficulty achieving a stable
measurement, and the thickness value displayed will most likely be
erroneous.