Wheel diameter measuring gauge, IDK-BT
IDK-BT [Revision 2.2] 4
th
September 2017
7
8.
Operation principle
The measurement of the diameter is performed according to the “three points”
technique, without the complete wheel coverage. The measurement method is based on
the diameter calculation by the known length of the segment chord (the distance be-
tween the ball bearings centers), which is obtained at placing the gauge onto the wheel.
The suggita of the segment is measured by means of the displacement converter. Video
presentation is placed here:
9.
Working with the gauge and working in autono-
mous regime
9.1. Gauge turn-on
Press
Red
button to turn on the power. The display shows “
ErrP
” message if the
accumulator battery voltage became lower then the control level. In this case the short-
term work is possible after pressing any key.
9.2. Single measurement
To perform measurement, it is necessary to:
turn the power on (press
Red
button).
The display shows “
- - - - -
”;
place the gauge onto the wheel;
make sure the ball supports are tight against the roll surface and side sup-
ports are adjacent to the edge of the wheel;
press
Green
button.
in a 1 second the display will show the value of the wheel diameter.
For viewing the result of measurement with indication discreteness of
0.01mm
(it
is accessible only in a mode of direct indication) it is necessary to press
Blue
button,
thus displayed result will be shifted to the left on one digit. Next pressing
Blue
button will
lead to return of indication to a starting position:
