All electronics are located in a miniature aluminum housing for easy integration into the engine compartment. Compared to other eddy current speed measuring systems, the DZ140 offers maximum immunity to interference (EMI), both in test rig operations and on-vehicle testing. The DZ140 eddy current measuring system is resistant to oil and dirt, which is a key advantage over optical speed measuring systems. This guarantees high precision and reliable measurement results in the harshest environment conditions. As an additional feature the system also outputs a temperature reading from the sensor.