The trolley measures track geometry as well as railway and
tramway rail head profiles and records results of track condition visual inspections.
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Laser Measurement Systems

Laser Measurement Systems

The measured wheel profile parameters include the entire wheel tread profile, flange height Sh, flange width Sw, slope qR, wheel diameter D, and back-to-back distance Az.
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The trolley measures track and turnout geometry as
well as records results of track condition visual inspections.
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Wheel flats and out of roundness wheel

Wheel flats and out of roundness wheel

Automatic measurement system makes it possible to classify the wheel tread surface condition by detecting wheel flats and out of round wheels.
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iTEC measures track geometry and record results of track condition. A new method for measuring horizontal and vertical irregularities enables the obtainment of highly repeatable measurement results.
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Track measurement

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Inertial Track Geometry Trolley: iTEC

Inertial Track Geometry Trolley: iTEC

The trolley measures track geometry and records results of track condition visual inspections. Irregularities in two planes (horizontal and vertical versines) in relation to both rails are measured using an innovative inert system consisting of cutting-edge semiconductor gyroscopes and accelerometers. A new method for measuring horizontal and vertical irregularities enables the obtainment of highly repeatable measurement results. Calculated values correspond to measurements performed using a wire versine meter or measurements made by state-of-the-art measurement cars. 

The trolley is easy to use and has a modular design enabling its transport by one person and fixing on a track in less than 5 minutes. In addition, the possibility of using the trolley on any track gauge significantly increases work productivity. 

Track geometry measurement results such as values of width, cant, horizontal and vertical irregularities, covered distances and GPS positions are recorded in the device memory on a real-time basis. The trolley can be easily and quickly (ca. 26 kg in weight) removed from a track to allow the safe passage of trains. Measurements can be instantly resumed without calibration or zeroing.

The TEC trolley meets the requirements of the EN 13848-4 standard. Measurement results generated by the trolley are consistent with the requirements of the Polish Railway Lines (PKP PLK).

The trolley control panel can be removed, facilitating the overview of results after the completion of measurements. The transfer of data to a PC is performed via a USB Pendrive. The trolley is supplied with the GeoTEC System software (for PCs) enabling, among other things, the graphic presentation and comparison of measurement results as well as the printing of measurement reports or calculating typical track quality factors. Measurement results are also available in the tabular form containing track defect locations. Measurement data can be exported in MS Word, MS Excel and PDF formats.

Screenshot of PC data processing software delivered with the trolley



Measured parameters Track gauge, cant, vertical irregularities, horizontal irregularities
Measurement increment 0.25 m
Ranges Track gauge: -15 ÷ +50 mm of the nominal value
Cant: ±200 mm
Horizontal and vertical irregularities: full range
Accuracy Track gauge: from ±0.5 mm
Cant: ±1.5 mm
Vertical irregularities: ±1 mm / 10 m
Horizontal irregularities: ±1 mm / 10 m
Technology of irregularity measurement Inertial measurement
Operating conditions Temperature: -20 ÷45 °C
Humidity: 15 ÷ 85%, no condensation
Memory capacity 430 km (measurement speed 1.5 m/s)
Weight 26 kg
Functionality Trolley records the measurement route using the on-board GPS receiver
Display legible even in direct sunlight, as well as in the tunnel; visual signalling of exceedings
Transferring of the measurement data to the PC via a USB Pendrive
Software for printing measurement reports, archiving and comparing measurement results
Continuous work Replaceable batteries making continuous operation possible (about 3 hours for one set of batteries)
Availability The trolley is available for all track gauges, e.g.: 914, 1000, 1067, 1435, 1520, 1524, 1600, 1668, 1676 mm
Data formats PDF, MS Word, MS Excel
Calculated parameters Width gradient
Track twist
Alignment in D1 range
Longitudinal Level in D1 range
Horizontal and vertical irregularities on a chord of up to 25 m


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GRAW Goldschmidt Thermit Group
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