Calibration - GE DMS Go Operator's Manual

2.5 Calibration

Calibration of the DMS Go requires the use of a calibrated standard. This standard must be made of the same material as the test piece.The
calibration procedure varies, depending on whether you have selected 1 or 2 points in the THK CAL option. The choice of 1 or 2-point
calibration depends on your test blocks:
•
1 Point involves use of a single test block, for which you enter or verify the thickness; both gates appear, and measure the distance
between the first and second backwall echoes (BWEs). The DMS Go also calculates and sets sound velocity and probe delay.
Note: The number of gates (1 or 2) is independent of the CAL mode, but is determined by the measurement mode (1 gate for dual, 2 gates
for dual-multi). You can perform 1-point calibration with one gate from the start to first backwall.
•
2 Point involves use of two blocks, or a single block with two steps (low-cal and high-cal). A user enters or verifies first the lower step
block, then the higher step block.
One-point calibration requires using the Probe Zero function; however, zeroing is unnecessary in 2-point calibration.
DMS Go Operator's Manual
Your Complete Source for
Testing Equipment. Since 1969!
www.BergEng.com
Berg Engineering & Sales Company, Inc.
Chapter 2. Instrument Setup
61
1-847-577-3980
Info@BergEng.com