Extech Instruments
36 TKG250- EN V2.4 11/13
Visual and Audible Alarm is enabled.
The letter
A
(Alarm) appears in the alarm icon
Visual, Audible, and Vibrating alarm enabled
.)) symbol appears next to the alarm icon. The letter
H
(High) appears in the alarm icon
Alarm condition has occurred meaning the measured reading is greater than the
High Alarm limit. The letter
H
(High) appears in the alarm icon. The screen
above has the Vibrating alarm enabled as the .)) symbol appears next to the alarm
icon.
Alarm condition has occurred meaning the measurement reading is less than the
Low Alarm limit. The letter
L
(Low) appears in the alarm icon. The screen above
has the Vibrating alarm enabled as the .)) symbol appears next to the alarm icon.
Using the Echo-to-Echo Option
The
Echo-to-Echo
option allows you to make measurements between two consecutive
backwall echoes. Therefore, a good usage of the
Echo-to-Echo
option is for measuring
through coatings to measure only the true metal thickness. There are two Echo-to-Echo
options you can select, which are as follows:
Echo-to-Echo On:
Enables the Echo-to-Echo function
Echo-to-Echo Off
:
Disables the Echo-to-Echo function
Blanking in Echo-to-Echo:
close attention should be paid when making readings
in Echo-to-Echo as the blank after first receive echo may need to be adjusted to
avoid “noise” or mode converted echoes. To adjust blanking on the first echo, see
section 4: Adjusting parameters in A-Scan mode.
Note:
Pay attention in A-Scan mode to ensure you are in the appropriate mode, Echo-to-
Echo or normal mode as thickness readings and associated calibrations are mode specific.
Manual Adjustment of Gain:
Again, sometimes gain will help to ensure you are
reading on the correct echo. To adjust gain, see section 4: Adjusting parameters in
A-Scan mode.
