Time TIME2110, Manual

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similar structure to the testing material. The direction of the spread of sound in the test block
should also be the same as the testing material.
In some cases, look up the sound velocity of known materials for replacement of the test block, but
this can only approximately replace some of the test blocks. In some cases, there are differences
between the two values in the sound velocity table and the actual one because of the difference in
the physical and chemical properties of material. This method is often used to test low carbon steel
only for approximate measurement.
Since TIME2110 ultrasonic wave gauge possesses the capability to measure sound velocity, sound
velocity can be obtained at first and then measurement of the part can be undertaken according to
this velocity.
10.10 A few measuring methods
a) single measuring method: measuring on one point
b) double measuring method: measuring two times on one point, make the cross talk isolating
board perpendicular to each other. Select the minimum display as the exact thickness for the
materials.
c) multi-point measuring method: measuring many times at a range of measurement, select the
minimum as the thickness of the material
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10.11 Selection of the probe
Probe type 5P Ф 10 5P Ф 10/90 7P Ф 6 SZ2.5P
Frequency (MHz) 5 5 7 2.5
Working temperature
range
-10~60 ℃ -10~60 ℃ -10~60 ℃ -10~60 ℃
Measurement range 1.2~225.0mm 1.2~225.0mm 0.75~60mm 3.0~300.0mm
10.12 The wear of probe cross talk isolation board may affect the results of
measurement; probe should be replaced when the following phenomena occur:
1. The screen always displays the same measurement value while measuring different thickness.
2. There is echo wave indication or measurement value displayed when the probe has been
inserted without measurement.
11. Prevention of measuring errors
11.1 Super-thin materials
Any material whose thickness is lower than the low limit of the probe will cause measurement
errors. Instrument should be connected again for measuring the same material in order to obtain
the result of the minimum thickness.