Metal thickness gauge capaNCDT DTV

for thin materialsportablenon-contact

Overview
The capaNCDT DTV system provides non-contact Disc Thickness Variation (DTV) measurement using capacitive displacement sensors. It supports synchronized multi-track thickness detection for rotating brake discs and is available as a bench/vehicle solution or as a portable DTV measurement case for mobile quality checks and warranty inspections.

Key applications

• Quality control on test benches
• On-vehicle road tests and R&D
• Workshop inspections and warranty checks
• Development and endurance testing of brake systems

Sensor concept (CSH1,4FL)
The CSH1,4FL multi-channel sensor integrates four capacitive sensing channels in a compact housing to measure four synchronous tracks. Sensors can be arranged in mirrored pairs on opposite disc sides to obtain precise thickness values. A ceramic substrate protects sensing elements from mechanical and thermal loads, ensuring temperature stability.

Controller and interfaces
Sensor channels are processed synchronously with controllers such as the DT6220 (or a 2-channel controller for the portable case). Data outputs include analog channels and digital interfaces (Ethernet, EtherCAT). Device configuration and operation are available via an integrated web interface.

Portable DTV case
The portable measurement case contains a 2-channel controller with software license, two capacitive sensors with cables and a mounting kit, delivering a complete mobile measurement channel for rapid on-site DTV evaluation on PC or notebook.

Software and operation

• Comprehensive DTV software package with real-time evaluation
• Algorithms for masking disc perforations and encoder‑less evaluation modes
• Web-based interface for easy setup and monitoring

Technical specifications

• Measurement principle: capacitive thickness measurement from both sides (difference principle)
• Multi-track capability: multiple sensor pairs or integrated multi-channel sensors (CSH1,4FL)
• Dynamic bandwidth: up to 20 kHz (system value); example configuration CSH1 + DT6220 up to 5 kHz (-3 dB)
• Interfaces: analog outputs, Ethernet, EtherCAT
• Use cases: test bench, on-vehicle road tests, workshop, mobile measurements
• Portable kit: 2-channel controller, software license, sensors, cables, mounting kit