А1270 Electro-Magnetic Ultrasonic Thickness Gauge
Operation Manual
8
ACOUSTIC
CONTROL
SYSTEMS
1.3.1 Design
The instrument is an electronic unit (Figure 1) to which replaceable
electromagnetic ultrasonic transducers (EMAT) are connected via cables.
Two rubber plugs are installed in the upper and lower end surfaces of the
instrument.
A color TFT display is located in the upper part of the screen of the elec-
tronic unit. The measurement results and operation information required for
the instrument control are shown on the display. The display is used for a vi-
sual monitoring of the measurement process via the color-coded indication.
A membrane keypad under the display allows to use the instrument
functions.
The upper end surface of the electronic unit bears a connector for
EMAT, and a 5 mm thick calibration sample D16Т made of aluminum alloy
D16Т. The propagation velocity of ultrasonic waves in the calibration sample
is 3120 m/s. The sample is used for adjustment of the instrument to the
connected EMAT, as well as for quick evaluation of the instrument perfor-
mance (Figure 2).
1.3 DESIGN AND OPERATION
Figure 1
Figure 2
Red mark on
the connector
Calibration
sample
Red mark on
the cable
1
