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General information
1
The model TO-EE is an ultrasonic material thickness gauge with several operating
modes. Based on the same operating principles as SONAR, the instrument can
measure the thickness of various materials with an accuracy of down to 0.1 / 0.01
millimetres. The gauge's multi-mode function allows the user to switch between pulse-
echo mode (error and indentation detection) and echo-echo mode (determination of
the actual material thickness without the presence of any paint or coating thickness).
1.1 Product specification
•
Multi mode: Pulse-echo mode (P-E mode) and echo-echo mode (E-E mode). In
the echo-echo mode, the wall thickness can be measured without taking the paint
or coating thickness into account.
•
Wide measuring range: pulse-echo mode: (0.65 ~ 600) mm (in steel, depending
on the probe). Echo-Echo mode: (3 ~ 60) mm.
•
V-path correction to compensate for the non-linearity of the probe.
•
TFT colour display (320 × 240 TFT-LCD) with adjustable backlighting allows the
user to work at workstations with low visibility.
•
Up to 100 groups of measured thickness values can be stored in the non-volatile
memory. A maximum of 100 data sets per group are permitted.
•
Two AA alkaline batteries are used as power source. This ensures continuous
operation of at least 100 hours (standard setting for brightness). Energy-saving
functions "Display Standby" and "Auto Power Off" are available.
•
With the internal Bluetooth module, a wireless connection with PC or other mobile
devices can be established.
•
USB 1.1 port. Online transmission of measurement data via USB to PC.
1.2 Measuring principle
The ultrasonic thickness gauge determines the thickness of a part or structure by
accurately measuring the time it takes a short ultrasonic pulse generated by a
transducer to pass through the thickness of the material, reflect off the back or inner
surface and return to the transducer. The measured bi-directional travel time is divided
by two to account for the outward and return paths and is then multiplied by the speed
of sound in the respective material. The result is reflected in the following ratio:
v
t
=
H
2
H = thickness of the test sample
v = sound velocity in the respective material
t = measured outward and return time
1.3 Converters: technical data
Freq
Model
[MHz]
4
Φ
Measuring range
[mm]
[mm].
Lower limit
Description
value [mm]
TO-BA-e-2020
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