DustDetect takes samples when the engine load passes a pre-set threshold. Accurate monitoring requires maintaining a turbulent flow regime within the sample lines, effectively preventing any particles from “dropping out”. Sufficient turbulence is required for the system to ensure accurate particulate measurements. The chosen approach mitigates the risk of obtaining low readings caused by particle dropout at low load and prevents sudden surges in readings that could occur when increased loads carry  previously dropped-out particles into the sensor.