DM4E Ultrasonic Thickness Tester

The DM4E is a small, simple-to-use general purpose thickness
gauge with excellent ultrasonic performance. It is ideal
for the user who demands a simple, compact, reliable
instrument at an affordable price. The DM4E comes with
the quality, dependability, and durability that you expect
from a Krautkramer D-Meter.

• Fits Comfortably in the Palm; Weighs only 9 oz.(255g)
• 200 hrs. on 2 AA Alkaline Batteries
• Sealed, Gasketed, Splash-Proof Housing
• 4 Key Operation
• MIN Mode Captures Thinnest Reading
• Velocity Readout and Calibration
• Stable High Temp. Reading (up to 1,000/°F, 538/°C) with HT 400 Probe
• High Contrast Backlit Display for Easy Viewing Under Any Circumstances

Specifications:

Operating Principle
Ultrasonic pulse/echo
 
Probe Zero Adjustment
Automatic, or manual 2-pt. calibration

V-Path Correction
Automatic, microprocessor controlled
 
Measuring Range
.025" to 20.00" (.6 to 500 mm.) depending on probe, materials, surface conditions, and temperature

Resolution
.001" or 0.01" up to 9.999" ; 0.01 above 9.999"
(.01 or .1 mm up to 99.99mm, .1 above 99.99mm)

Update Rate
4 Hz;.25 Hz in Minimum Capture Mode

Gain
Automatic (Hi, Med., Lo)
 
Velocity Range
39,000 to 393,700 in/sec.
1000 to 9999 m/sec.
 
Receiver Bandwidth
1 MHz to 10 MHz (-3dB)

Display Type
4 digit LCD, .5" (12.7 mm) high with electroluminescent backlight
 
Power Supply
2 ea. 1.5 V, AA alkaline cells

Hi/Lo gain indicator (manual mode)

Operating Time
Up to 200 hrs. @ 25% duty cycle without backlight
 
Auto Shut-Off
After 3 min. of non-use

Temperature Range
+10 degrees F to +120 degrees F
(-10 degrees C to +50 degrees C)
 
Dimensions (L x W x D)
5.8" x 3.0" x 1.4"
(146.0 mm x 76.2 mm x 34.2 mm)
 
Weight
9 oz. (255 g) including batteries
 
Hazardous Area Operation
Safe operation as defined by MIL-STD-810E, Method 511.3, Procedure I.