Chapter 2. Instrument Setup
DMS Go Operator’s Manual
59
2.4.2b Setting the Ultrasonic Detection Mode (CONFIG - TG MODE) (cont.)
•
S-FLANK — This mode indicates that a single-element type transducer is connected to the
DMS Go
. It starts ultrasonic detection
from the last zero crossing before the first detected flank in gate-A and ends with the last zero crossing before the first detected flank
crossing in gate-B. The
DMS Go
calculates and displays a thickness result value from the acquired data. The mode is used with a
single-element probe to test thickness in COATED materials, especially those with smooth, parallel surfaces.
•
DUAL — This mode indicates that a dual-element type transducer is connected to the
DMS Go
. It starts ultrasonic detection from an
artificial point relative to the pulser firing (IP, initial pulse, or “T0”) and ends with the last zero crossing before the first detected
flank in gate-A. The corresponding TOF is compensated by the probe zero offset (P-delay), calculated automatically during the
calibration process. The
DMS Go
calculates and displays a thickness result value from the acquired data. This mode is used with a
dual-element probe to test corrosion thickness in non-coated materials, especially on curved and irregular backwall surfaces.
•
DUAL-MULTI — This mode is available when a dual-element type transducer is connected to the
DMS Go
. It starts ultrasonic
detection from the last zero crossing before a peak echo detected in gate-A and ends with the last zero crossing before a peak echo in
gate-B. The
DMS Go
calculates and displays a thickness result value from the acquired data. This mode is used with a dual-element
probe to test thickness in coated materials.
•
TOP-COAT—When used with a special TopCOAT probe, this mode tests thickness in coated materials. It is especially well suited to
curved and irregular (pitted) backwall surfaces. (Optional)
•
AUTO-V— When used with a special TopCOAT probe, this mode measures non-coated materials. It requires no knowledge of the
measured material’s type and calculates velocity without a like-material calibration standard. (Optional)
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