Specification :

They’ve got what it takes.
DM 4E, DM 4 and DM 4DL provide
everything you need for ultrasonic thickness measurement - all of it weighing only 9 oz (255 grams) and packed in a small housing with just a few keys, tailored for the practical single-handed operation.
The DM 4E gauges enable you to accomplish a large number of demanding tasks, especially with remaining wall thickness measurements
on components subject to wear.
They see through things.
DM 4 and DM 4DL come up with a special highlight: the through-coating measurement. The metal wall thickness,
for example on pipelines and tanks, is accurately and quickly measured
in spite of surface coating. This applies for example to adherent paint coatings, plastic coatings, or fiber-reinforced plastic sheathings. Any time-consuming and cost-intensive removal of the coating is no longer needed!
Field-proven functions
Don’t let the fact fool you that you can manage with only four keys on the DM 4E, five on the DM 4, and with only nine on the DM 4DL. Hidden behind
them are powerful functions that make your work easier.
• THK, Normal Thickness Measurement
and 1-Point calibration mode displays and holds measured thickness
reading until another measurement
is made. Fast, 1-Point thickness calibration is performed in THK mode. A troublesome adjustment of the equipment can likewise be skipped. The operating mode DUAL MULTI enables an unrivalled ease of operation: calibrate
DM 4, press the DUAL MULTI key, place the probe and measure without the time and expense of removing protective
coatings and reapplying.
In the operating mode DUAL MULTI the measurement is carried out between
two successive backwall echoes from the underlying base material; the echoes from the coating are ignored.