D-R 290
Optical opacity / dust monitor 2nd generation
The D-R 290 has been used successfully for more than 15 years in various applications as reliable and low maintenance opacity / dust monitor. Now the new generation is available.
The D-R 290 is a certified optical transmission monitor to measure the opacity or dust concentration of flue gases with medium to high dust concentrations.
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 by the dust content in the measuring section is measured and evaluated.
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 and ASTM 6216
Advantages of the new generation
- Digital Modbus interface according to VDI 4201-3
- Convenient operation with remote access option
- All settings can be changed without opening the device
- Compatible with universal display and control unit D-ISC 100
Applications
Suitable for dust concentration measurement
- on incineration plants
- on power plants
- on cement plants
- in the metal industry
- on plants according to IED 2010/75/EC
- on converter plants and asphalt mixing plants
- on plants for the incineration of biomass
Suitable for measuring the opacity of flue gas
- on plants in accordance with U.S. EPA 40 CFR 60 PS1, special MCOC required
- on cruise and container ships
Suitable for measurement of dust load in warehouses
Technical Data
| Sample gas type | Air, flue gas, non flammable process gas |
| Sample gas temperature | Above dew point up to 250 °C (482 °F) standard, optional up to 1000 °C (1832 °F) |
| Inner duct pressure | -50...+20 hPa (optional higher) |
| Sample gas relative humidity | 0...95% RF, non-condensing |
| Stack/duct inner diameter | 1…18 m (3.3…59.1 ft) |
| Measuring principle | Measuring the optical transmission of visible light which passed a measuring path twice. |
| Conformities | IED 2010/75/EU EN 13284-2, EN 14181 EN 15267-3 40 CFR 60 US EPA PS1 40 CFR 60 US EPA PS11 |
| Certificates | CE, COC 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 head 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 |
| 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…10000 mg/m3 (depending on calibration) |
| 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 (-40…140 °F) |
| 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 |
| Process connection | Connection flange, bolt circle 100 mm, tube ID = 59 / 83 / 105 mm |
| Ambient temperature (operational) | -40…+60 °C (-40…140 °F) |
| IP protection class (IEC 60529) | IP65 |
| Dimensions (HxWxD) | 370 x 190 x 270 mm |
| Weight | 7 kg |
| Material | Aluminum, painted blue RAL 5017 |
| Power supply | 115 / 230 VAC, 50 / 60 Hz, others on request |
| Power consumption | 0.37 kW (50 Hz) / 0.43 kW (60 Hz) |
| Air supply capacity | 40 m3/h (50 hPa) / 60 m3/h (25 hPa), others on request |
| Ambient temperature (operational) | -20…+50 °C (-4…122 °F), optional higher |
| IP protection class (IEC 60529) | IP55 |
| Dimensions (HxWxD) | 480 x 450 x 320 mm |
| Weight | 12 kg |
| Material | Stainless steel 1.4301 |
- The suitability of the D-R 290 for the listed ranges depends on the kind of dust, the size distribution and the duct diameter.
- Subject to technical modifications.
Downloads
Downloads
Declarations of Conformity
Accessories
Universal display and operating units
The universal operating unit 
D-ISC 100 allows the connection of several DURAG devices. It allows parameterisation and maintenance of all connected devices via integrated keypad or a connected PC and also supports remote access via intranet or internet connection.
Our D-ESI Service and Parameterisation Software assists you to manage all your DURAG sensors connected in one network system via a uniform graphical Interface.
Please contact your sales representitive for more Information.
Supply unit
- D-TB x00 in various versions
- for voltage supply of one DURAG sensor
- different housings available
Please contact your sales representitive for more information.
Purge air blower
- D-BL xx in various versions
- for supplying the measuring head with purge air
- weather protection cover available as an option
Please contact your sales representitive for more information.
We offer various accessories such as weather protection covers for your sensor, reference filter sets, mounting flanges and so on to fit your application and to have all components from one source.
Please contact your sales representative for further information.