DMS-200 For dust concentration detection of ultra low range Overview Different from normal back scattered dust monitors(DMS-100), DMS-200 inserts to the stack to realize flue dust measurement with dust measuring modules in the probe tip, and forward scattering method is possible to achieve very low detection limits. Measuring principle DMS-200 uses laser forward scattering principle to detect the dust concentration in the stack. The modulated laser irradiates dust particles in the flue to emit scattering light. Lens in front of laser collects the forward scattered light into the high-temperature-resistant fibers and then the optical signal is transmitted to the detector, been analyzed and processed by the signal processing unit.The intensity of the scattered light is proportional to the concentration of particulate matter, and the detector signal current can be converted characteristically to the concentration of flue dust. 0 Using laser forward scattering principle detecting the concentration of dust, the detection limit as low as 0.005mg/m3 0 Using air curtain purge to protect lens of the laser and detector. Backblow gas can be heat automatically by the temperature of the probe inside the stack, and achieve dust proof function of internal positive pressure. 0 Probe portion with high temperature resistant design 0 Support automatic zeroing 0 Support automatic range switching 0 Support manual span calibration 1.Installation on standard flange to the stack 2.Mounting flange height need be higher than the fence height to install the monitor 3.Power and gas source connecting at backend of monitor