1. Getting Started
DMS 2 Operating Manual
Page 19
reduces or eliminates the multiples of the coating layer,
reducing interference with the desired measurement of the
metal. The CA211A probe may also provide good results.
(Refer to Chapter 7.)
The A-scan display graphs the amplitude of the actual ultra-
sonic pulse as it’s received by the probe. A typical A-scan
display is shown in Figure 1-12. Notice that both an A-gate and
a B-gate appear in the figure. In the multi-echo modes, the
thickness measurement is calculated based on two backwall
echoes. Figure 1-12 shows how each of the multi-echo
measurement modes differ when calculating material thick-
ness. In general, however, thickness is still calculated based on
the amount of time that passes between similar features (such
as peaks) on two consecutive echoes.
1.4
Important Features of the DMS 2
When the DMS 2 is operating in one of the multi-echo modes,
the instrument can measure the thickness of painted and
coated components while excluding the coating thickness
from the displayed thickness measurement.
The DMS 2 visually displays echos as A-scan images. Up to
1,100 of these images, the corresponding thickness measure-
ments, and related notes can be stored in the instrument’s
high-capacity data recorder.
Built-in interfacing capabilities allow the DMS 2 to transmit
recorded data and A-scan images to a printer or computer.
These capabilities also make it possible to program the
instrument using a personal computer.
Other important features of the DMS 2 include the following:
•
Logical menu-guided operation
•
The ability to quickly identify problem spots by evaluating a
series of measurements and displaying the thinnest reading
and A-scan (Section 4.1.3 explains the Minimum-Capture
mode.)
•
The ability to build a data archive containing 150,000
thickness readings or 1,100 A-scans with full documenta-
tion and date/time log information (The expanded memory
option stores 318,000 thickness readings or 2,400
A-scans.)
•
The ability to easily access, print, or download stored
readings, A-scans, B-scans, and microgrids
•
Audible, lighted, and on-screen thickness alarms
•
A power management system that visually displays
remaining battery life.
•
Thickness profiling capabilities using B-scan (refer to
Section 4.5—for DMS 2 only)
Содержание MFE DMS 2
Страница 2: ...DMS 2 DMS 2E Operating Manual GE Inspection Technologies Ultrasonics Ident Nr 021 002 151 Rev H ...
Страница 3: ...THIS PAGE INTENTIONALLY BLANK ...
Страница 22: ...1 Getting Started DMS 2 Operating Manual Page 11 FIGURE 1 7 The VIRTUAL KEYBOARD is shown here ...
Страница 94: ...3 Setting Up the DMS 2 DMS 2 Operating Manual Page 83 FIGURE 3 11 An Auto Labeler screen is shown here ...
