NewSonic SonoDur2 Issue 04 09/2016 Page 27
7.4.1 Carrying out of Measurement by Means of Motorized Probes
Measurement menu and probe guidance during the performance of a measurement: As shown in the
image above, it is recommended to hold the probe on the bottom of the probe base during the
penetration phase in order to prevent it from tipping over. This risk is particularly high, if the probe is
only held on the top.
7.4.2 Automatic Measurement with Probe Shoe and Switching Sleeve:
Carefully attach the SonoDur2 motorized probe (Figure 7.12), keep it pressed down and wait until
the measurement process is completed. When the probe touches down, the switching sleeve (Figure
7.19) will be pressed backwards, triggering the motor control through a micro-switch. The Vickers
diamond will be automatically moved from the casing towards the material surface. This process is
indicated by a directional arrow in the probe symbol of the device display (Figure 7.13). As soon as
the nominal test force has been reached, the probe symbol will be replaced by the remaining
penetration time (units, indicated in seconds) and the countdown starts to run. Once the preset
penetration time has expired, the measured value will be indicated and the reverse engine
movement simultaneously displayed by an arrow in the opposite direction, until the end position has
been reached (see picture sequence below).
It is recommended to not raise the motorized measuring probe for the next measurement
beforehand. In this way, potential surface damages by the retracting Vickers diamond can be
definitely avoided.
In either case, a new measurement cannot be triggered until the end position had been reached.
Please note:
If the Vickers diamond was not able to touch the material surface no reading will be taken and the
motor drives the rod back in parking position.
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