Danatronics ECHO 7 Series User manual

Quick Start Guide
ECHO 7 Thickness Gages
V 2.0

Ver: 2.0 2
Batteries
ECHO Series Thickness Gages come standard with a rechargeable Li-Ion battery located on the
back of the gage under the door with the screw. Fully charge your unit before using by plugging
the USB cable into the top of the gage and to the included AC wall adapter.
When charging, the F4 key will light up blue. The blue light will turn off when fully charged.
Allow up to 10 hours for a full charge.
When the gage is turned on, there is a battery indicator on the bottom right hand corner of the
screen showing the % battery life remaining
1. Powering ON/OFF
To power on the unit, press and hold the F1 key for more than three seconds. The LCD will briefly
display the company information and then the Transducer Setup selection screen will appear as
shown below. To turn off the unit, press and hold the F1 key for about three seconds.
Note:If the gage is set up for left hand operation, the F1 and F4 display prompts will be reversed.

Ver: 2.0 3
2. Using Keypad Functions
Function keys, or F keys, (e.g., F1, F2, F3, F4) have various gage functions and may change
depending on the display screen. View the bottom of the display screen for the function that
corresponds with the appropriate F key. For example, F1 may correspond with the Save function,
F2 with the Freeze function, or F4 can change the display format of how large the thickness value
is. There are 4 settings to toggle through for gages equipped with as a DLW or dataloggger with
waveform.
3. Selecting Transducer and Performing Auto Zero
A new transducer can be selected from the Transducer Setup selection screen, which appears
after the unit powers on. The Transducer Setup selection screen can also be accessed by going
to the Menu, selecting Initial Settings then Setup Selection.
Transducer selection screen
While in the Transducer Setup selection screen, go to the transducer options that match the part
number on your actual transducer, the material S (Steel) or P (Plastic) , and class type using the
up/ down arrow keys. Press the green Menu/ok button then press F4 to begin making
measurements.
Stored Setup Abbreviations:
DEF=Default
S= Steel
P= Plastics
1=Class one or the measured time from main bang to first backwall echo. C1 is the most common
and easiest to use but is less accurate than class 3 and the minimum thickness is larger than
class 2 or 3. C1 is good for most materials.
2=C2 or the measured time from the interface echo (echo off delay line or waterpath) to first back
wall echo. C2 is ideal for thin materials, curved parts or high temperature with a high temp. delay
line. Can also be used in immersion. C2 is ideal for plastics, composites and thin materials.
3= Class 3 or measured time between echoes following in interface. C3 is the most accurate
because we measure the echoes within the material not affected by pressure used, amount of

Ver: 2.0 4
couplant or cable attenuation. C3 is also ideal for thin materials as well as materials such as
steel, aluminum and ceramics where multiple echoes exists.
5= Class 5 or the A2-DFR CLF4 transducer setup found in the transducer menu of the
ECHO 7/Precision meets Boeing’s specification to inspect a range from .007”- 1.0” with
one transducer and one setup. (requires appropriate transducer)
.
Description of Classes of Measurements:
DEFP2- DLK1025 is a default class 2 set up for P for Plastics with a 10 Mhz, .25 inch probe.
DEFS is for Steel and the classes of measurement are either 1, 2 or 3. Class one uses a contact
transducer to measure the time from initial pulse or main bang to first backwall echo. Class 2 is
uses a delay or immersion probe and measures the time from the interface echo to first back wall
echo. Class 3 also uses a delay line or immersion probe and measures the time between multiple
echoes after an interface echo.
Class 1 with cursor on first backwall echo

Ver: 2.0 5
Class 2 with interface echo at left and first detected backecho on right. Also shown in interface
blank (dead zone) below the interface echo.
Class 3, marker shows measured time between echo 1 and echo 2 after an interface echo. Also
shown is the blank after first
Class Five for A2-DFR CLF4 transducer
After selecting transducer, the transducer setup screen will appear. Press F4
measure to use the default parameters and go directly to the measurement
screen or make any necessary parameter adjustments prior to pressing F4

Ver: 2.0 6
Make any necessary adjustments then F4 for to go to the Measurement screen
Saving and discarding an altered stored setup:
When making a change to any parameter to a default setup, the ECHO will put an asterisk next to
the file indicating something has changed. Your choice is to Save the new setup by pressing F2
and typing in a new name or discarding the changes by pressing F3. The ECHO can save more
than 2,600 custom setups which is ideal for varying applications.
Note:The default setups will not be erased when assigning a new Setup File
4. Calibrating the Gage
Calibrating is the process of adjusting the gage for a specific material and transducer before
testing the material to make sure that all measurements are accurate. You must always calibrate
before measuring material for standard accuracy. The following steps show how to perform
velocity cal, zero cal, velocity and zero cal, and delay-line cal. A test step block of known
thicknesses is required to perform an accurate calibration.

Ver: 2.0 7
a. Velocity Calibration Only
To perform a velocity calibration, press the Menu/OK key and scroll to calibration and press
Menu/OK
To perform a velocity calibration, While measuring the thickest piece of your test sample,
select F3 - VEL key. After pressing the F3 key, you can take the transducer off the test block.
If the displayed measurement is different than the known value of the step, use the up or
down arrow key to adjust the displayed value to the known value of the step. Press the
MENU/OK key to perform the calibration.
The unit will briefly display the calibrated velocity value in the top of the screen and then
return to Measure mode.
Cal screen for datalogger version
b. Zero Calibration Only
To perform a zero calibration, go to the Calibration mode as shown in part a. While
measuring the thinner step, press the F2 – Zero key. After selecting the F2 key you can take
the transducer off the test block. If the measured value is different than the known value of
the step, adjust the measured value by pressing up or down arrow keys. Press the MENU/OK
key to perform the calibration. The unit will briefly display the calibrated zero value in the top
of the screen and then return to Measure mode.
c. Velocity and Zero Calibration (Most accurate and recommended method)
To calibrate both velocity and zero at the same time, first go to the Calibration mode as
shown in part a.While measuring the thinnest step, press F2 – ZERO and then use the up or
down arrow keys to scroll through the thickness value number to the known thickness. Then
press the F1 - CAL key. While measuring the thickest step, press the F3 - VEL key after
which time you can take the transducer off the test block. If the displayed measurement is
different than the known value of the step, use the up or down arrow key to adjust the
displayed value to the known value of the step. Press the MENU/OK key to perform the
calibration. For a few seconds in the top left hand corner, the calculated acoustic sound
speed will be displayed.
Note:The order of Velocity and Zero calibration can be reversed. If Velocity calibration is
performed after Zero calibration, the calibrated velocity value will be displayed at the end of
the calibration process in the top left of the display.
Note:Once any of the above calibrations are performed, verify the accuracy of the readings
using the test step block.
5. Taking Measurements

Ver: 2.0 8
After an Auto Zero is performed on a selected transducer, the unit automatically goes to the
Measure mode as shown below.
To take thickness readings, simply apply couplant (fluid in gage kit bottle) to the material’s
surface followed by the transducer to measure the thickness. Depending on the settings, the
display may show other parameters. Press F4 to key to toggle between available display types
For more detailed information on Measure mode, please see the full ECHO series manual
6. Changing Resolution
To change between 3 digit and 4 digit resolution, go to the Main Menu, then select initial settings,
use the up or down keys to select resolution, press the F1 back button to exit the menu and
return to the previous screen.

Ver: 2.0 9
7. Changing the Parameter Settings
To change any parameter settings, press the F1 – Menu key from the Transducer selection
screen. Use the up and down arrow keys to select the Display, Initial Settings, or Measurements
option depending on the setting you wish to change and press the MENU/OK key. Use the arrow
keys to select any of the settings you wish to change. Once you select a parameter, use the
arrow keys to navigate the options. When finished, press the F1 – Back key. For more detailed
information on parameter settings, please refer to the ECHO Series Manual
Note:The default setups will not be erased when assigning a new Setup File
Adjusting waveform parameters:
If your Echo is equipped with the live waveform and datalogger, in the A-scan or waveform main
measurement mode, you can adjust the following parameters in real time: Initial gain I DB, Final
gain Fdb, slope, rectification, range, delay, MB Blank, IF Blank, C3 Blank, Echo WindowECHO 1
Detect, ECHO 2 Detct, Pulser voltage, ID, Alarm.
Simply press the right or left arrow keys to toggle to the parameter to be adjusted then use the up
or down arrow to adjust and F1 when done.