Introduction to SIDSP® Technology
SIDSP® (Sensor-Integrated Digital Signal Processing) technology represents a significant advancement in coating thickness measurement. It offers enhanced interference immunity, reliability, and repeatability compared to traditional analog methods. This digital approach integrates signal processing within the sensor, reducing the need for complex external electronics and improving measurement accuracy.

Advantages of Digital Technology
Digital sensors provide several benefits over analog systems, including:

• Improved interference immunity due to higher signal levels (4V digital vs. 0.02V analog).
• Reduced component count, leading to increased reliability and reduced failure rates.
• Enhanced precision and reproducibility, allowing for fewer measurements to achieve accurate results.
• Digital filters that effectively remove disturbances without distorting the signal.

Challenges with Analog Technology
Analog coating thickness gauges are susceptible to electromagnetic interference and require ideal conditions for accurate readings. They involve complex circuitry and are prone to errors that are difficult to detect and correct.

Electromagnetic Interference and Standards
The EN 61000 standard addresses electromagnetic compatibility but focuses on high-frequency disturbances, leaving low-frequency perturbations untested. Digital technology, however, offers robust protection against both types of interference.

Conclusion
SIDSP® technology enhances the performance of coating thickness gauges without increasing costs. It is expected that more manufacturers will adopt digital signal processing to remain competitive. ElektroPhysik has pioneered this transition, setting a new standard in the industry.