D-R 290 – DUST AND OPACITY MONITOR
For continuous, contactless dust and opacity measurement at medium to high concentrations in dry flue and process gases. Also suitable for difficult plant conditions.
Description
Functionality: Transmission
Features:
- Continuous dust measurement
- Smallest certified measuring range 0 … 15 mg/m3
- Automatic measurement and correction of contamination
- Automatic control functions
- Contactless measurement
- Maintenance and linearity check without disassembly
Benefits:
- Suitable for official emission monitoring
- Reliable measurement of medium to large dust concentrations
- Space-saving and easy installation
- Long life time and high availability under extreme plant conditions
Applications:
- Emission measurement of dry flue gases at the stack
- Temperatures up to 1,000 °C
- Corrosive flue gases, plants with complex gas matrix
- Measurement of dry process gases
Technical Data:
| Measuring principle | Transmission, contactless and in-situ measurement |
|---|---|
| Measuring variable | Extinction, opacity, calibratable as dust concentration in mg/m³ |
| Measuring range | Opacity: Minimum 0 … 20%, maximum 0 … 100%Extinction: Minimum 0 … 0.1, maximum 0 … 2.0Dust concentration: Minimum 0 … 80 mg/m³, maximum 0 … 4,000 mg/m³ |
| Certified measuring range | 0 … 15 mg/m³ |
| Ambient conditions | Installation location: Indoor or outdoor installation**Temperature:-40 … +60 °C-30 … +60 °C (ATEX)-20 … +60 °C (IECEx) |
| Operating conditions in duct | Temperature: Maximum 250 °C, optional: 1,000 °CRelative humidity: 0 … 95%, non-condensingRelative pressure:-50 … +20 hPa-50 … 0 hPa (ATEX/IECEx) |
| Duct dimensions | Inner diameter: 0.5***… 18 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 |
| Light source | LED, 450 … 680 nm |
* Additional interfaces with D‑ISC 100 operating unit
** Weather protection cover required for outdoor installation
*** Measuring section > 1 m
System Components:
| Dust monitor D-R 290 (measuring head and reflector) | |
|---|---|
| Purge air unit(s) D-BL | |
| Software D-ESI* and Terminal Box without purge air unit D-TB 100** or | |
| Operating unit D‑ISC 100 |
* Enables remote access via web interface, PC with Windows operating system required
** External purge air supply required
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