The patented pendulum heads neutralise the transmission of force while the patented bearings offset the stresses in the vehicle. This guarantees high-precision results and reproducible measurements.
The integrated precision lift facility, which is available as an optional extra, allows exact positioning in respect of heights and forces. The special design of the measuring points guarantees that heights will be sustained and forces held, even for relatively long periods of time. This prolonged height hold is essential if a geometric measurement of the profile of the coach body is required after the position or reference position of low torsional stress has been reached.
Once the measurements have been taken, the ELAS-h is taken off the lifting lugs and the jacking system resumes "normal" operation.
The ELAS-h corner force measuring unit is a fully electronic measuring system. The four measuring points are separably connected with the specially developed measuring amplifiers. These are wired up via a CAN bus system and their job is to supply the measuring bridges with a specific input voltage and to digitise the output voltage received from the measuring bridges.
They communicate with a central measurement data controller, the WMV. The WMV has a TFT panel to display the readings. The touch-screen input facility is also the means whereby commands can be sent to the measuring amplifiers.
It is possible in the event of malfunction, due to the modular design and the digitisation of the measuring jacks, to replace a defective jack with one that is working so that the measuring process can be continued without any major delays.
All the components belonging to the measuring system are delivered in packages on a roll cage trolley. The system is supplied ready calibrated, obviating the need for any time-consuming and expensive set-up processes on site.
The system is calibrated by an independent accredited body in conformity with DIN 7500-1. This body is in turn accredited by the German national accreditation body (Deutsche Akkreditierungsstelle GmbH (DAkkS)) as conforming to DIN EN ISO/IEC 17025.