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TO-BA-e-2020
2.2 Control panel
The design of the device allows the user
quick access to all device functions. A user-
friendly menu system allows access to any
function by pressing a few keys.
Function keys for selecting the desired
function on the display. In the following
sections of this manual they are referred to as
F1, F2 and F3, from left to right.
ON/OFF or CANCEL
Sample-Zero process
Save measurement result
Confirm/Enter
Plus or scroll up
Minus or scroll down
3
Preparation for measurement
3.1 Selection of the converter
The meter is designed to perform measurements on a wide range of materials, from
various metals to glass and plastics. However, different types of materials require the
use of different transducers. Choosing the right transducer for the application is
essential to ensure accurate and reliable measurements. The following sections
highlight the important characteristics of transducers that should be considered when
selecting a transducer for a particular application.
In general, the best transducer for a given application is a sensor that emits sufficient
ultrasonic energy into the material to be measured so that a strong, stable echo is
received by the instrument. The strength of the ultrasound during propagation can be
influenced by several factors. These are listed below:
•
Initial signal strength: The stronger the signal is at the beginning, the stronger
its back echo. The initial signal strength is largely determined by the size of the
ultrasonic transmitter in the transducer. A large emitting area emits more energy
into the material to be measured than a small emitting area. Therefore, a so-
called "1/2 inch" transducer emits a stronger signal than a "1/4 inch" transducer.
