D-R 820 F

DUST MONITOR

Extractive measurement of wet flue or process gases. For monitoring small to medium dust concentrations.

  • Measurement Principle: Extractive sampling with forward scattered light; gas is drawn, diluted, heated to remove moisture, and measured in a separate chamber
  • Application Suitability: Ideal for harsh industrial conditions such as downstream of wet scrubbers, desulfurization plants, and waste incinerators with high moisture and low exhaust temperatures
  • High Accuracy & Automation: Automatic zero and reference checks; automatic contamination measurements and correction of values
  • Durability: Stable laser light source with long lifetime; robust construction with IP55/IP65 protection for probe and control units
  • Ease of Use: Commissioning, adjustment, and maintenance without a PC via local control panel and LCD display
  • Performance: Calibrated to measure dust concentrations in mg/m³; suitable for variable gas velocity conditions
  • Waste incineration plants – for monitoring emissions from municipal waste, hazardous waste, and sewage sludge.
  • Power generation – used in gas, oil, coal, and co-firing power stations to meet environmental compliance.
  • Wet cleaning systems – suitable for saturated gas after wet scrubbers, desulfurization units, and other high-moisture processes.
  • Industrial processes – used in cement, lime, steel, food, and grain industries to track filter efficiency and process emissions.
  • Measuring Principle: Extraction, dilution, heating, and forward scattering of laser light.
  • Measuring Range: Typically 0–15 mg/m³, extendable up to 100 mg/m³.
  • Sample Gas Conditions:
  • High moisture up to 30 g/m³ H₂O (aerosol)
  • Temperature up to 280°C
  • Pressure –30 to +2 hPa
  • Applications: Wet scrubbers, waste incinerators, power plants.
  • Components: Probe (IP65, Stainless Steel/Hastelloy), Blower Unit, Supply/Control Unit (SU).
  • Outputs:
  • 4× 4–20 mA (galvanically isolated)
  • Digital contacts
  • Optional digital inputs
  • Power Supply: 230/400 V, 50 Hz (other options available).
  • Weight: Approx. 40 kg (probe unit).
  • Compliance: Suitable for combustion/incineration plants; meets EC directives, VDI 2066, EN 14181, etc.
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