1.
Safety precautions and measurement conditions
· The metering accuracy depends greatly on the wheel surface quality. There-
fore it is necessary to carry out the check and presorting of the wheel surface
roughness and flaws before measuring the diameter.
· Prior to place the gauge onto the wheel there is a need to clean the wheel
parts that contact with gauge ball bearings, side supports and measuring tip,
of the mud.
· At arranging the gauge, do not allow hitting its supports on the wheel and any
measuring tip side hitting
· At arranging the gauge, do not apply strong forcing in the direction of the
measuring tip movement. It can result in the gauge sag, that will bring about
the uncertain metering result
· It is necessary to inspect the gauge supports periodically and to cleanse them
· To save the battery power the display extinguishes if there were no buttons
pressings for 60 seconds, at that only blinking dot is shown. Pressing any but-
ton just turns on the display and does not act in any other way in this case.
2.
Electromagnetic compatibility
The gauge has been developed for use in industry and meets the requirements of the
following standards:
· EN 55022:2006 Information Technology Equipment. Radio disturbance
characteristics. Limits and methods of measurement.
· EN 61000-6-2:2005 Electromagnetic compatibility (EMC). Generic standards.
Immunity for industrial environments.
· EN 61326-1:2006 Electrical Equipment for Measurement, Control, and Laboratory
Use. EMC Requirements. General requirements.
3.
General information
Electronic gauge is designed for measuring wheel rolling circle diameter (amount of
wear) of railway, metro and tram in the course of checkup, examination, repair and
formation of wheel sets. Measurements are made directly on rolling stock without
wheelset roll-out.
4.
Basic data and performance characteristics
Name of parameter
Value
Measurement range, mm
400…1400 or on request
Measurement error, mm
±0.2
Indication discreteness
0.1mm, 0.01mm * or 0.01 inch **
Position of measurement, S, mm
On request
Distance between axes of ball bearings (base), mm
and measurement range, mm
122±0.5 (400…750 mm) or
200±0.5 (400…950 mm) or
250±0.5 (600…1400 mm) or
300±0.5 (720…1400 mm)
Display
build-in, LED
Operating temperature,
0
C
-5…+55
Power supply – built-in rechargeable battery
two AAA 1,2V
The number of measurements that can be taken before battery recharge is
not less than
1000
Weight, kg
0,5
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