The dust concentration measuring device PFM 16 ED is a highly sensitive system, used for continuous extractive measurement of dust contents in wet and sticky exhaust gases using an isokinetic gas sampling technology.
For dust concentration measurement the measuring gas is sampled from the process by a temperature-controlled probe and via a heated measuring gas pipe conveyed to a measuring chamber which contains
an optical measuring unit. The sucked off measuring gas is continuously diluted and dried with hot and dust-free ambient air. The active principle of dust measurement is based on the optical scattered light measurement. Therefore a laser lance unit is arranged in a cylindrical measuring chamber and streamed with the conditioned measuring air. In the electronics of the control unit the signal of the optical unit is converted to an equivalent dust signal.