Scan (Dc-2020C); Velocity Rate; Materials; Velocity Input - DGC DC-2000C Series Instruction Manual

DC-2000C SERIES ULTRASONIC THICKNESS GAUGE
limit, it will display and give alarm. This measurement mode is more widely
used than differential mode.
8.4.1.6 Scan: (DC-2020C)
It is available for measuring the thickness of test piece with high temperature
surface. The gauge beeps for each fast measurement. And will display the
average measured thickness upon the measurement finished.
〖8.4.2〗 Velocity Rate
Sound velocity plays an important role in measurement. Different material is of
different sound velocity. When the sound velocity is incorrect, it will cause
wrong measured results. There are 3 ways to set the material's sound velocity,
which are:
1. Directly select preset material velocity,
2. Input the new velocity which is not preset into the menu,
3. Get the accurate sound velocity of the workpiece which the thickness is
known.

8.4.2.1 Materials

The Velocity selection gives the sound velocity of 9 different materials which
can be selected by users. The 9 materials are: aluminum, titanium, steel,
stainless steel, glass, copper, cast iron, brass and polystyrene.
- Press
- Select one material by pressing
- Press
Notice: Velocities for 9 materials are just theriotic values. If users want
to get accuret measuremnts, please refer to the "Velocity measurement" and
get the more accurate sound velocity.

8.4.2.2 Velocity Input

Sound velocities of 9 materials is not satisfied with the requirements of users,
there is a sound velocity table which give the sound velocity of various
⑴Materials
into"
to confirm.
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