DM 401 Optical Dust Monitoring System Low cost double pass transmissiometry for process dust monitoring add to inquirylist Product will be added. Basic-Equipment Transceiver and retroreflector, double path transmissiometry with microprocessor technology Continuous air purging required to protect optics from stack dust Small, light weight low power supply and operating costs Opacity or mg/m³ (after on site calibration) Long-life green LED source No moving parts – minimal maintenance Simple installation, commissioning and operation High measuring accuracy PC based setup, control and data logging Downloads Flyer DM 401pdf - 1,59 MB Questionnaire DM401pdf - 21,63 KB