Measuring Disc Thickness Variation | capaNCDT DTV

The capaNCDT DTV series is designed for non-contact detection of Disc Thickness Variation (DTV). Capacitive sensors for multi-track measurements and a carrying case including the complete measurement channel for mobile use are available.

With the capaNCDT DTV measurement system, capacitive displacement sensors determine the thickness of the brake discs from both sides based on the difference principle. While the brake disc rotates, the thickness deviation is determined via the circumference of the entire disc. Using several sensors in pairs or the CSH1,4FL multi-channel sensor makes multi-track thickness measurement possible. Thickness measurements can be carried out in test benches, in road tests or in car repair shops. The DTV case is intended for mobile use, e.g., for quality assurance purposes and warranty claims.

Robust multi-channel sensor for test benches and road tests

The innovative CSH1, 4FL multi-track sensor contains four capacitive sensors in one compact housing. This is how four tracks on the brake disc can be detected synchronously. Mirror-inverted sensor models mounted on the opposite sides of the brake disc enable accurate thickness measurement. A special ceramic substrate protects the sensors from mechanical and thermal loads, also providing high temperature stability, which enables precise measurement results in the case of fluctuating ambient temperatures.

Combined with the DT6220 controller, four sensor channels can be configured and processed synchronously. Due to the high bandwidth, dynamic measurements up to 5kHz (-3dB) are possible. Data output is via an analog output or a digital Ethernet/EtherCAT interface. An intuitive web interface enables fast, easy set up and configuration of the sensor and controller.