Light Scatter Particulate Emission Monitor

DM 170

The DM 170 is designed to comply with the TÜV suitability testing scheme to EN 15267 and for measuring dust concentrations in a wide range of industrial applications.

Due to its wide dynamic range, the DM 170 may be used in Combustion applications as well as in higher dust loading applications (such as Power, Cement and Metals smelting, and in processes without filtration). Its simplicity and wide operating range makes it also ideally suited for process optimisation applications.

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  • ProScatter Backscatter sensor technology with superior minimum detection as low as 1mg/m³ compared to conventional techniques
  • Manual and remote Zero and Span (Reference) checks available to ensure optimal instrument performance
  • Purge Flow Fail Sensor and Optical Shield options
  • Offers a more reliable PM dust measurement as an alternative to Opacity and Scintillation based monitors for emissions that are reported in mg/m³ and provides
    early indication of increased dust emissions in processes with low dust concentrations
  • Non-intrusive system designed to operate in noncondensing stack environments and to reduce the risk of contamination
  • Contamination risks are further reduced due to singleside stack installation where critical optical components remain outside the stack
  • A Flue Gas Blocker can be fitted to ensure that flue gases do not escape when the unit is opened (for auditing/maintenance purposes), thus enhancing on-site personnel safety
    The DM 170 is well-suited for use in medium to large stacks and is suitable for low to high dust concentration measurements, regardless of dust velocity or charge.
    Typical applications include:

  • Continuous Emission Monitoring (CEM) relative to Emission Limit Values (ELV) in Power Plant, Boiler and Metal Smelting applications
  • Filter performance monitoring in Metal, Mineral and Chemical plants
Technical Specifications
Measured parameters Dust
Technology ProScatter Backscatter
Measurement/Monitoring capability <1 – 1000 mg/m³
Stack/Duct diameter suitability 1.5 to 15 m (5- 50 ft)
Flue gas temperature -20°C to 250°C (-4°F to 482°F)
option: up to 400°C (752°F)
Baghouse YES
Cartridge Filter YES
Ceramic Filter YES
Coalescent Filter YES
Cyclone YES
Electrostatic Precipitator (ESP) YES
Wet Electrostatic Precipitator (WESP) /
Wet Scrubber /
Sensor variants Stainless Steel
QA checks YES
Technical data
Measurement capability <1 – 1000 mg/m3
Sensor Variants 316 Stainless Steel
Stack Temperature Ranges -20°C – 250°C up to 400°C option
Functionality and QA Checks Automatic zero and span
Data Output RS485 (Modbus) output to Controller
Air Purge option
Enclosure Protection Rating IP65

Designed to comply with the TÜV suitability testing scheme to EN 15267


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