In an age in which oil prices are continually rising and the discussion on CO2 emissions is generating increasing attention, a vehicle’s fuel consumption is a decisive factor in its sales success. The turbo charger is a contribution to improving the vehicle’s efficiency. For this reason, there are presently a series of new turbo charger developments. During qualification the stress of rotating components must be evaluated and optimised under different operating conditions with a view to load limits. As is known, these turbo chargers in the automobile sector rotate at speeds of up to 200,000 rpm.

In addition to the measurement of paddle / blade vibrations and bearing temperatures, the company Manner also supplies high precision applications for the measurement of torques acting on the turbo charger shaft. At maximum revolution speeds, the measurement data is precisely captured, and as standard, transmitted to the evaluation unit or computer using non-contact technology. The miniaturised construction and the extremely simple mounting are the result of years of development work in cooperation with the turbo charger industry.

The electronics and transmission antenna are contained in a cartridge shaped housing that weighs a mere 5 grams and has a length of 35 mm. It is screwed on to the shaft thread at the turbo charger inlet. The inductive coupling is conducted at the inlet and can process up to four sensor signals in parallel. The measured signal has a digital resolution of 16 bit, the rotor electronics a temperature resistance of 160°C.