Principle of Operation

Principle of Operation

Sintrol dust monitors are based on a unique Inductive Electrification Technique.

The measurement is based on particles interacting with an isolated sensor connected to the channel or stack. When particles move in the gas stream and pass nearby the sensor, they will create an induction based AC signal that can be seen in certain frequency bands. Since dust affects the signal only for certain frequencies, the frequencies unrelated to dust measurement can be then filtered out before signal processing.

Classical triboelectric technology is based on the DC signal, which is caused by particles making contact with the sensor to transfer charges. Compared to DC based measurements, the AC based technology is much more sensitive and mitigates the influence of sensor contamination which is huge benefit for industrial applications. By using AC based Inductive Electrification Technology it is possible to reach dust concentration measurement thresholds as low as 0.01 mg/m3.


Features/benefits of Inductive Electrification Technology:

  • Since the signal is created by particles passing nearby the probe, this minimizes the effect of particle build up on the surface of the probe. As a result, the drift in the measurement is mitigated.

  • Signal is formed from certain optimized frequency band only and created by true particles.

  • Minimum effect of flow velocity changes compared to the techniques based on particle impaction.

  • Sintrol instruments include a singular automatic set up function to ensure easy installation, calibration and commissioning. These features together with the TÜV certification according to the EN14181 (2004) standard provide customers with a high quality, accurate and user friendly measurement.