WRS – Installation Manual
4.2.2 Fitting the stylus
Here there is described the procedure for fitting the stylus on the probe installed on a transmitter.
[
The procedure described here after foresees the use of a crash-
protection pin. This pin, placed
between stylus and p
robe, has the aim of safeguarding the probe in case of accidental impacts
on the stylus.
The crash protection pin is suggested for steel stylus. With ceramic stylus the probe
safeguarding is guaranteed by the fragility of the stylus.
Proceed as follows to fit the stylus on the probe:
• Fit the crash protection pin (A) on the probe (B).
• With the wrench (supplied with the equipment) hold down the stylus holder (C) of the probe to avoid
damaging it while tightening the pin. With the other wrench act in position (D) to tighten the crash
protection pin (A).
• Screw the stylus (F) on the crash protection pin (A). Use a wrench to hold the pin down, and the
other one to tighten the stylus.
• Insert the guard (E), making it slide along the stylus until the crash protection pin (A) is covered. This
guard has the task of holding the stylus in case of breakdown of the crash protection pin
If no crash protection pin is used, screw the stylus directly on the probe; use a wrench to hold down the
stylus holder (C) and the other one to tighten the stylus.
Figure 4-5. Fitting the stylus.
WARNING
To guarantee constant, high-
quality results we recommend using ceramic or carbon fibre
styluses.
[
N.B. :
When choosing the components of the stylus, we recommend:
• Using the smallest number of components possible.
•
Selecting the greatest possible stylus diameter, while ensuring the total length is reduced to a
minimum.
• In the case of applications that incl
ude the use of a shear pin, we recommend selecting the
sturdiest solution and carrying out the appropriate metrological tests before using it.
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