KNESTEL Technologie develops diesel exhaust particle measurement

KNESTEL Technologie & Elektronik GmbH, based in Germany, has developed particle measurement technology for diesel vehicle exhaust emissions. The company's measurement modules utilize diffusion charging (DC) technology, which counts particles based on their electrical charge.

The system operates through a two-step process where aerosol particles are ionized by a corona discharge. Subsequently, these charged particles induce a measurable electric current within a sensor module. This method allows for precise particle counting without requiring consumables or heated sample gas lines, enhancing reliability and reducing operational costs.

KNESTEL provides various solutions, including ready-to-use, prototype-approved particle counters in portable housings suitable for periodic technical inspections in Germany and other countries. The company also offers customized and modular units for integration into customer-specific systems. The importance of particle measurement is increasing due to growing environmental and health awareness and stricter emission regulations. Measuring particle counts in diesel exhaust has become mandatory in many countries to identify faulty particulate filters and improve air quality.