Checkline TI-25S - Manual (Page 9)

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6.0 S ELECTING M ATERIAL T YPE (C ALIBRATION )
The TI-25S is supplied with eight preset material types, each corresponding to a
specific sound velocity. Each time the “MATL Key” is pressed the velocity will
toggle from one to the next in a circular pattern. The list of preset velocities are
as follows:
0 1. Aluminum 2024 (0.251 in/µs )
0 2. Stainless Steel 303 (0.223 in/µs )
0 3. Steel4340 (0.233 in/µs)
0 4. Cast Iron (0.179 in/µs )
0 5. Plexiglas (0.106 in/µs )
0 6. PVC (0.094 in/µs)
0 7. Polystyrene (0.092 in/µs)
0 8. Polyurethane (0.070 in/µs)
0 9. Custom 1
10. Custom 2
NOTE: If the Custom 1 & 2 are needed, they are set using the PC software
(free) & downloaded to the gauge using the data cable (optional,
p/n N-306-0010).
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Temperature of the Material
When it is necessary to measure on surfaces that are exceedingly hot, high
temperature transducers must be used. These transducers are built using special
materials and techniques that allow them to withstand high temperatures without
damage. Additionally, care must be taken when performing a “Probe-Zero”
or “Calibration to Known Thickness” with a high temperature transducer.
See Appendix A for more information on measuring materials with a high
temperature transducer.
NOTE: Selection of the proper transducer is often a matter of tradeoffs between
various characteristics. It may be necessary to experiment with a variety
of transducers in order to find one that works well for a given job.
Electromatic can provide assistance in choosing a transducer, and
offers a broad selection of transducers for evaluation in specialized
applications.