ECHO Series Ultrasonic Thickness Gages
45
Yellow indicates caution—the reading is nearing the Warning percentage set for a low or
high alarm value:
Green shows that the reading is safe within the alarm value margins:
Note: The F4 key is not active in Alarm mode.
For example, when using the 5-step English test block with thicknesses of 0.100, 0.200,
0.300, 0.400 and 0.500 inches, if you enter alarm high-low you will first need to enter the
high value. Enter 0.500 inches and press the MENU/OK key.
Next you will need to enter the low value of 0.100 inches. The display will ask you to
enter the percent reading of the high-low. The gage will default to 20% (this can be
changed with the up or down arrow keys), so any reading within 20% of the high value
(approaching high, between 0.400" and 0.499" as 0.400" is within the 20% range of
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