Atec DM4E User Manual
GE Inspection Technologies
Krautkramer DM4E
Simple ultrasonic thickness gauge
The DM4E is a small, basic, simple-to-use
general purpose thickness gauge with
excellent ultrasonic performance. It is ideal
for the user who demands a simple, com-
pact, reliable instrument at an affordable
price. The DM4E comes with the quality,
dependability, and durability that you ex-
pect from a Krautkramer D-Meter and is
backed by a full 2 year warranty on parts
and labor.
Ultrasonics
Small
• Fits comfortably in the palm
• Lightweight (9 oz.) - no operator fatigue
• Rubber field case for added protection
and comfort
• Neck & wrist straps for “hands free” use
SIMPLE
• Automatic Probe Zero...no zero block
• 4 key operation
• Automatically recognizes Intelligent
Transducers for best performance
• Deactivate/activate features to
further simplify operation to meet
job requirements
• 200 hours on two AA alkaline batteries
User Preferred Features
• MIN Mode captures thinnest reading
• Stable High-Temperature Measurement,
(up to 1000°F, 538°C) with HT400
probe
• 2-Point Calibration for curved surfaces
& best linearity with non-DIALOG
transducers
• High-contrast, backlit display for easy
viewing under any conditions
• Sealed, gasketed, splash-proof housing
The DM4E is the best value in thickness
gauging. See for yourself! Call today to ar-
range a demonstration.
2004 General Electric Company. All rights reserved.
GEIT-20208-s-AE (06/04)
We reserve the right to technical modifications without prior notice.
GEInspectionTechnologies.com
Base Instrument Package
DM4E Ultrasonic Thickness Gauge
Two 1.5V AA Alkaline Batteries
Carrying Case
Operating Instruction Card
Operating Manual
Certificate of Calibration
Accessories
RC-984
Rubber instrument case with prop-up stand,
adjustable neck and wrist straps, and hanging
loop
FB-579
Field Accessory Belt with removable pouches
LCC-326
Locking Transport and Storage Case
HTC-010
HiTempco Couplant (2 oz. tube)
Specifications
Operating Principle
Ultrasonic pulse/echo
DIALOG Intelligent Transducers -- automatically recognized for optimum performance. *2-pt. calibration required, auto probe zero inoperable. Note: Other standard probe models are available and
“special probes” are developed in our Application Lab to satisfy unique requirements.
• DM4E is covered by a full two year warranty on parts and labor
Krautkramer DM4E
Probe Zero Adjustment
Automatic, or manual 2-pt. calibration
V-Path Correction
Automatic, microprocessor controlled
Measuring Range
0.25"- 20.00" (.64-500mm) depending on probe,
material, surface condition, and temperature
Displayed Resolution
.001 or .01 up to 9.999 inches, .01 above
9.999 inches; .01 or .1 up to 99.99 mm,
.1 above 99.99 mm
Measurement Update Rate
4 Hz; 25 Hz in Minimum Capture Mode
Gain
Automatic
Material Velocity Range
39,000 to 393,700 in./sec.;
1000 to 9999 m/sec.
Receiver Bandwidth
1 MHz to 10 MHz (–3 dB)
Display Type
4 digit LCD, .5" (12.7 mm) high, direct drive,
with electroluminescent backlight
Power Supply
2 ea. 1.5V AA alkaline cells
Battery Life (operating time)
Up to 200 hours @25% duty cycle without
backlight
Auto Shutoff
After 3 minutes of non-use
Operating Temperature Range
+10°F to +120°F (-10°C to +50°C)
Size ( L x W x D)
5.8" x 3.0" x 1.4" (at thickest point);
146.0 mm x 76.2 mm 34.3 mm
Weight
9 oz. (255 g) including batteries
Hazardous Area Operation
Safe operation as defined by MIL-STD-810E,
method 511.3, procedure.
Application and Description Model Probe
Cable
Contact
Diameter
Frequency Measuring Range
In Steel
Temperature
Range
High Sensitivity Fingertip
FH2E Potted
380” (9.6 mm)
7.5
.030” - 2.0”
(.75 - 50 mm)
< 130° F
(< 538° C)
High Temperature
HT400 KBA533/536 .500” (12.7 mm) 5.0
.030"- 10.0"
(.76 - 254 mm)
<1 000° F
(< 538° C)
Thin Materials
DA312 KBA532 .300” (.76 mm) 10.0
.025"- 1.0"
(.64 - 25 mm)
< 130° F
(< 54° C)
High Penetration
DP 104 KBA532 1.25” (31.8 mm) 1.0
.200" (5 mm)
minimum
< 130° F
(< 54° C)
Penetration
DA 303 KBA533 .635” (16.2 mm) 2.0
.200" (5 mm)
minimum
< 140° F
(< 60° C)
General Purpose
DA 301 KBA533 .475” (12.1 mm) 4.0
.050"- 8.00"
(1.2 - 200 mm)
< 140° F
(< 60° C)
Wear Resistant
FH2E WR Potted .550” (14.0 mm) 7.5
.030"- 2.0"
(.75 - 50 mm)
< 130° F
(< 54° C)
High Sensitivity Fingertip
FH2E D
★
Potted .380” (9.6 mm) 7.5
.030"- 2.0"
(.75 - 50 mm)
< 130° F
(< 54° C)
General Purpose
DM 401 GP
★
KBA533/
533A
.700” (17.8 mm) 5.0
.060"-8.0"
(1.5 –200mm)
< 300° F
(< 148° C)
General Purpose
DM 411 GP
★
DA 233 .700” (17.8 mm) 5.0
.060"-8.0"
(1.5 –200mm)
< 300° F
(< 148° C)
Small Dia. Fingertip
FH2E M Potted .280” (721 mm) 7.5
.0.030"-2.0"
(.75-50mm)
< 130° F
(< 54° C)
3 mm Footprint
DA 312B16* Potted .120” (3.0 mm) 10.0
.025"- .500"
(.6 - 13 mm)
< 130° F
(< 54° C)
GE Inspection Technologies
Ultrasonics
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