D-R 290

Opacity And Dust Monitor

DURAG

Suitability tested and certified optical transmission monitor to measure the opacity or dust concentration in dry flue gas

Overview

  • Continuous and contactless measurement
  • Automatic zero and span check
  • Automatic measurement and correction of contamination of optical surfaces
  • Extremely powerful and stable super-wide band diode (SWBD) light source
  • Extremely low-maintenance
  • Fail-safe shutters with purge air monitoring as option
  • Certified according to EN 15267-3
  • Compliant with US-EPA 40 CFR 60 PS1, PS11, and ASTM D6216 – 12

Measuring principle

The D-R 290 operates using the double-pass method according to the auto-collimation principle. The light beam traverses the measuring path twice. The attenuation of the light beam caused by the dust content in the measuring path is measured and evaluated.

Applications

Suitable for dust concentration measurement

  • incineration plants
  • power plants
  • cement plants
  • metal industry
  • plants according to IED 2010/75/EC
  • converter plants and asphalt mixing plants
  • plants for the incineration of biomass

Suitable for measuring the opacity of flue gas

  • plants in accordance with US EPA 40 CFR 60 PS1, PS11 and ASTM D6216 – 12
  • cruise and container ships

Suitable for measurement of dust load in ambient air

  • ware houses
  • storage facilities
  • dust emission monitoring outside industrial buildings

Technical Data

  • D-R 290 application data

    Flue gas type Air, flue gas, non flammable process gas
    Flue gas temperature Above dew point up to 250 °C standard,
    optional up to 1000 °C
    Inner stack/duct pressure (relative to ambient) -50…+20 hPa
    Flue gas relative humidity 0…95% RF, non-condensing
    Stack/duct inner diameter <0.5…18 m (depending on application, flange type and reflector type)
    Measuring path length 1…18m (depending on application, flange type and reflector type)
  • D-R 290 general

    Measuring principle Measuring the optical transmission of visible light which passed a measuring path twice.
    Conformities IED 2010/75/EU / 17. BImschV
    2001/80/EG LCPD / 13. BImschV
    27. BImschV
    EN 13284-2, EN 14181
    EN 15267-3
    40 CFR 60 US EPA PS1
    40 CFR 60 US EPA PS11
    ASTM D6216 – 12
    Certificates CE, QAL1 DIN EN 14181 / DIN EN ISO 14956 / EN 15267-3, MCERTS, Pattern Approval GOST R, Pattern Approval certificate Rep.of Belarus, Pattern Approval Certificate PRC, MCOC 40CFR 60 EPA PS1
    Measuring location In-situ, non-contact
    Self-check, protective functions Automatic zero- and span check
    Automatic soiling correction
    LED light source: no readjustment needed
    Automatic fail safe shutter in case of purge air failure (option)
    System components D-R 290 M xx2 measuring device
    D-R 290 R xx2 reflector
    D-ISC 100 Universal operating and display unit
    D-BL purge air unit
    D-R 290 E mounting flange with tube
    D-SK fail safe shutter (option)
    Accessories
  • D-R 290 M xx2 measuring device

    Physical measuring value Optical density/ extinction, opacity
    Derived measuring values Transmission, opacity (SP), extinction, dust concentration in mg/m3, mg/Nm3 (after gravimetric calibration)
    Measuring range opacity 0…20% … 0…100%
    Output range opacity Freely programmable
    Measuring range extinction 0…0.1 … 0…2.0
    Output range extinction Freely programmable within the measuring range
    Measuring range dust concentration 0…5,000 mg/m3 (depending on calibration and stack conditions)
    Output range dust concentration Freely programmable within the measuring range
    Lowest detection limit 0.75% for measuring range 0…0.1 extinction
    Combined standard uncertainty acc. to QAL1, DIN EN 14181 1.8%, related to the certified measuring end value 15mg/m3
    Light source, spectral range 450…680 nm, SWBD LED white
    Process connection Connection flange, bolt circle 100 mm, tube ID = 59 / 83 / 105 mm
    Digital interfaces RS 485 Modbus RTU, bi-directional communication
    Mini-USB (service)
    Analog outputs 1x 4-20 mA, 400 Ohm, potential free, assignment programmable
    Digital outputs 2x contact NC/NO, max. load 60 VDC /
    30 VAC / 0.5 A
    assignment programmable, typically: maintenance, failure
    Power supply 24 VDC, 0.5 A
    Ambient temperature (operational) -40…+60 °C
    IP protection class (IEC 60529) IP65
    EX zone Option: Ex II 3G Ex pz II T4, Ex II 2G Ex px II T4
    Dimensions (hxwxd) 370 x 190 x 400 mm
    Weight 10 kg
    Material Aluminum, painted blue RAL 5017
  • D-R 290 R xx2 reflector

    Process connection Connection flange, bolt circle 100 mm, tube ID = 59 / 83 / 105 mm
    Ambient temperature (operational) -40…+60 °C
    IP protection class (IEC 60529) IP65
    Dimensions (HxWxD) 370 x 190 x 270 mm
    Weight 7 kg
    Material Aluminum, painted blue RAL 5017
  • Remarks

    • The suitability of the D-R 290 for the listed ranges depends on the kind of dust, the size distribution and the stack/duct diameter.
    • Subject to technical modifications.