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D-R 220

D-R 220
Dust and opacity monitor

The cost-effective solution for continuous, contactless dust and opacity measurement at medium to high concentrations in dry flue and process gases. 


Functionality: Transmission

  • Continuous dust measurement
  • Contactless measurement
  • Automatic control functions
  • High-quality corrosion-free plastic housing and a wide ambient temperature range
  • Easy installation for opacity monitoring and reliable emission monitoring
  • Reliable measurement of medium to large dust concentrations
  • Space-saving and easy installation
  • Transmission measuring principle opens up a wide range of applications
  • Also for use under extreme sample gas conditions
  • Emission measurement of dry flue gases at the stack
  • Measurement of dry flue gases in the process
  • Corrosive flue gases, challenging gas matrix
  • Measurement of dry process gases
  • Technical data
  • System components
Measuring principleTransmission, contactless and in-situ measurement
Measuring variableAbsorbance, opacity, calibratable as dust concentration in mg/m³
Measuring rangeOpacity: 0 … 100%Absorbance: 0 … 1.6Dust concentration: 0 … 5,000 mg/m³
Certified measuring rangen/a
Ambient conditionsInstallation location: Indoor or outdoor installation**Temperature: -20 … +50 °C
Operating conditions in ductTemperature: Max. 20 °C, optional: 500 °CRelative humidity: 0 … 95%, non-condensingRelative pressure: -50 … +10 hPa standard -50 … +50 hPa optional
Duct dimensionsInner diameter: 0.4 … 10 m
Interface*Analogue output: 1x 4 … 20 mA, max. 400 Ohm, potential-free (various parameters adjustable)Digital output: 2x NC/NO, max. 60 VDC, 30 VAC, 0.5 A (various parameters adjustable)RS 485 Modbus RTU, USBStatus display: LED
Operation and displaySoftware D-ESI 100*** orOperating unit D‑ISC 100
Control functionsAutomatic zero point and reference point measurement (optional), manual contamination and linearity measurement (optional)
Light sourceLED

* 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

Dust monitor D-R 220 (measuring head and reflector)
Software D-ESI*
Terminal Box with purge air unit D-TB 200 or
Terminal Box without purge air unit D-TB 100* or
Operating and purge air unit D-ISC 100 P

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

  • High quality at a low price
  • Mandatory
  • Recommended
D-TB x00
D‐ESI 100
D-BL
D-ISC 100 xx2