D-R 320
Dust Monitor
The new scattered light dust monitor to detect lowest to medium dust concentrations in dry flue and process gas.
The D-R 320 is based on the back-scattered light principle. Thereby the light of a red laser diode illuminates the dust particles in the measuring volume of the flue gas duct. The light scattered backward by these particles is detected and evaluated.
A unique feature of the D-R 320 is the automatic background light compensation with means of a patented optical system with dual detector. This allows for an easy and quick Installation without any adjustment. A light trap is not required.
Overview
- Single-sided installation without optical alignment
- Automatic background light compensation without light trap
- Automatic zero and reference point check
- Automatic contamination control and correction
- Integrated purge air regulation and purge air control
- QAL1 certified according to EN 15267-3
- Compliant with US EPA 40 CFR 60 PS11
- Lowest certification range 0...7.5 mg/m3
Applications
Continuous emission monitoring, e.g:
- on incineration plants generally
- on plants according to IED 2010/75/EU
- on waste, hazardous waste and sewage sludge incineration plants
- on cement manufacturing plants
- on power plants with gas, oil, coal or co-firing
- on plants for the incineration of biomass
Monitoring of:
- ventilation units
- filter units
Technical Data
| Sample gas type | Air, flue gas, non flammable process gas |
| Sample gas temperature | 0…600 °C (+32…1112 °F) |
| Inner duct pressure | -50...+50 hPa |
| Sample gas relative humidity | 0...95% RF, non-condensing |
| Stack/duct inner diameter | >0,7 m (>2,3 ft) |
| Measuring principle | Back scattering |
| Conformities | CE IED 2010/75/EU US EPA 40 CFR 60 PS11 |
| Certificates | CE, QAL1 EN 14181 / EN 15267-1 / EN 15267-2 / EN 15267-3, MCERTS |
| Measuring location | In situ, mounted at stack, device is not in contact with sample gas |
| Measuring sequence | Continuous |
| System components | D-R 320 M measuring head, sender/receiver unit D-TB 200 supply unit D-ISC 100 universal operation unit (option) |
| Self-check, protective functions | Automatic zero and reference point check Automatic contamination correction Integrated purge air monitoring Integrated purge air regulation Fully-integrated fail safe shutter for protection at purge air failure (option) |
| Physical measuring value | Scattered light units, calibrated as dust concentration |
| Measuring range dust concentration | min. 0 …5 mg/m³ max. 0 …200 mg/m³ |
| Output range dust concentration | Output range freely programmable. Any range within the measuring range can be assigned to the analogue output. |
| Certified measuring ranges | Dust concentration 0...7.5 mg/m³ |
| Integration time | 1...180 s, programmable |
| Light source, spectral range | Laser diode, red |
| Process connection | DN100 PN6 / ANSI 4“ 150lbs RF Single-sided, on a standard flange in any orientation. No adjustment at site required; no light trap required. |
| Digital interfaces | RS 485 Modbus RTU, bi-directional communication, USB (Service) |
| Analog outputs | 1x 4-20mA, 400 Ohm, isolated, assignment parameterisable |
| Digital outputs | 2 x contact NC/NO, permissible load 60 VDC / 30 VAC / 0.5 A, function can be assigned. Typically: maintenance, failure |
| Power supply | 24 VDC, 0,5 A |
| Operation | D-ISC 100 universal operating unit (option), Service software D‑ESI 100, incl. remote access via web interface (option), requires PC with Windows XP® or Windows 7® OS Access via USB |
| Ambient temperature (operational) | -40…+60 °C (-40…+140 °F) |
| IP protection class (IEC 60529) | IP65 |
| Dimensions (HxWxD) | 200 x 190 x 260 mm 200 x 190 x 410 mm (variants) |
| Weight | Depending on version, approx. 15 kg |
| Material | 1.4571 / 316Ti, painted blue RAL 5017 |
- The suitability of the D-R 320 for the listed ranges depends on the kind of dust, the size distribution and the duct diameter.
- Subject to technical modifications.
Downloads
General information
Product information
EU 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
- version with integrated purge air blower 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.