D-R 808 – DUST MONITOR
For continuous measurement of low to medium dust concentrations in dry flue and process gases. Single-sided installation for difficult plant conditions.
Description
Functionality: Forward scattering
Features:
- Continuous dust measurement
- Smallest certified measuring range 0 … 7.5 mg/m3
- Single-sided installation without optical alignment
- Automatic control functions
- Continuous, integrated purge air monitoring
- Maintenance and linearity check without disassembly
Benefits:
- Suitable for official emission monitoring
- Reliable measurement of small dust concentrations
- Space-saving and easy installation
- Reliable emission monitoring
- Long service life
Applications:
- Emission measurement of dry flue gases at the stack
- Measurement of dry process gases with small concentrations
Technical Data:
| Measuring principle | Forward scattering, in-situ measurement, single-sided installation |
|---|---|
| Measuring variable | Stray light units, calibratable as dust concentration in mg/m³ |
| Measuring range | Minimum 0 … 5 mg/m³Maximum 0 … 200 mg/m³ |
| Certified measuring range | 0 … 7.5 mg/m³ |
| Ambient conditions | Installation location: Indoor or outdoor installation**Temperature: -40 … +60 °C |
| Operating conditions in duct | Temperature: Maximum 350 °C, optional 500 °CRelative humidity: 0 … 95%, non-condensingRelative pressure: -50 … +50 hPa |
| Duct dimensions | Min. inner diameter: 0.3 mMax. wall thickness: 0.47 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, integrated purge air monitoring |
| Light source | Laser, class II, < 1 mW at 650 nm |
* 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
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