For continuous measurement of low to medium dust concentrations in dry flue and process gases. Single-sided installation for difficult plant conditions.


Functionality: Forward scattering



  • Continuous dust measurement
  • Smallest certified measuring range 0 … 7.5 mg/m3
  • Single-sided installation without optical alignment
  • Automatic control functions
  • Continuous, integrated purge air monitoring
  • Maintenance and linearity check without disassembly



  • Suitable for official emission monitoring
  • Reliable measurement of small dust concentrations
  • Space-saving and easy installation
  • Reliable emission monitoring
  • Long service life



  • Emission measurement of dry flue gases at the stack
  • Measurement of dry process gases with small concentrations


Technical Data:

Measuring principle Forward scattering, in-situ measurement, single-sided installation
Measuring variable Stray light units, calibratable as dust concentration in mg/m³
Measuring range Minimum 0 … 5 mg/m³Maximum 0 … 200 mg/m³
Certified measuring range 0 … 7.5 mg/m³
Ambient conditions Installation location: Indoor or outdoor installation**Temperature: -40 … +60 °C
Operating conditions in duct Temperature: Maximum 350 °C, optional 500 °CRelative humidity: 0 … 95%, non-condensingRelative pressure: -50 … +50 hPa
Duct dimensions Min. inner diameter: 0.3 mMax. wall thickness: 0.47 m
Interface* Analogue output: 1x 4 … 20 mA, maximum 400 Ohm, potential-free (various parameters adjustable)Digital output: 2x NC/NO, maximum 60 VDC, 30 VAC, 0.5 A (various parameters adjustable)RS 485 Modbus RTU, USBStatus display: LED
Operation and display Software D-ESI 100*** orOperating unit D‑ISC 100
Control functions Automatic zero point and reference point measurement, automatic contamination measurement and compensation, integrated purge air monitoring
Light source Laser, class II, < 1 mW at 650 nm

* Additional interfaces with D‑ISC 100 operating unit

** Weather protection cover required for outdoor installation

*** Enables remote access via web interface, PC with Windows operating system required



There are no reviews yet.

Be the first to review “D-R 808 – DUST MONITOR”

Your email address will not be published. Required fields are marked *