The dust opacity monitoring system has following major parts: • double pass opacity monitor (transceiver and reflector) • air purging heads for continuous supply of clean purging air • mounting flanges with flange fixing kit • and optional air purging blower with accessories Features • Short optical path 20"-157" (0.5m-4m) • Direct continuous measurement across stack • Small, lightweight & low operating costs • Simple installation, commissioning and operation • No moving parts – minimal maintenance • PC based setup, control and data logging • Long-life green LED source • High measuring accuracy Opacity or mg/m3 (*) after on site calibration according to VDI 2066 Visit: https://diamondsci.com/collections/gas-analyzers/products/dust-opacity-monitor-mru-dm-401