Danatronics, Corp.
10
Oxide Scale
The Oxide Scale option comes standard on the ECHO-7W and ECHO-7DLW.
When equipped with the Oxide Scale option and a 20mhz delay line transducer, both
ECHO 7 and ECHO 8 units with live waveform can measure the Oxide Scale (0.015" –
0.040") and tube thickness calibrated to their independent sound speeds.
To use the Oxide Scale option, begin at the main Menu and go to the Setups option.
Select DEF S3, DLK2025-OXIDE, or DLK20125. Use samples of known tube thickness
and known oxide thickness to perform a calibration.
Press the MENU/OK key. Select the Calibration option followed by the MENU/OK
key. The following prompt will appear:
Use screen above
Follow the prompts by pressing the F2 key to calibrate the tube thickness first (Cal Zero
on the thin section, and Cal Vel on the thick section). Press the MENU/OK key. Next,
press the F3 – VEL key to calibrate while coupled to a sample with a known oxide scale
thickness.
Note: You may need to increase I.DB or F.DB to get an echo image similar to the one
shown below.