The D-R 909 provides extractive continuous dust measurement of small to medium dust concentrations in wet flue and process gases even under difficult plant conditions.
Key Benefits
- QAL1-suitability tested in accordance with EN 15267
- Automatic control functions
- Flow-optimized design prevents the deposit of impurities
- Efficient operation due to electronically controlled blowers and heaters
- Modular system of compact units
- Suitable for official emission monitoring
- Low service cost for calibration and maintenance
- Low energy cost
- Easy and versatile installation
Applications
Suitable for dust concentration measurement in wet flue or process gases
- Emission measurement of wet flue gases
- Measurement of wet process gases with small to medium dust concentrations
Download Specifications
TECHNICAL DATA
| Measuring principle |
Extraction of sample gas, dilution and heating for evaporation of water droplets, forward scattering, single-sided installation |
| Measuring variable |
Scattered light units, calibratable as dust concentration in mg/m³ |
| Measuring range |
Minimum 0 … 5 mg/m³ Maximum 0 … 200 mg/m³ |
| Certified measuring ranges |
0 … 7,5 mg/m³; 0 … 15 mg/m³; 0 … 45 mg/m³; 0 … 100 mg/m³ |
| Ambient conditions |
Installation location: Indoor or outdoor installation*Temperature: -40 … +60 °C |
| Operating conditions |
Temperature: 0 … 160 °C (Higher temperature values on request)Relative humidity: 0 … 100% and maximum 70 g/m³ water as aerosolRelative pressure: -50 … +50 hPa** |
| Inner duct diameter |
Minimum: 0.2 m |
| Interface |
Analog output: 1x 4 … 20 mA, maximum 500 Ω, potential-freeAnalog input: 1x 4 … 20 mA, maximum 250 Ω, potential-freeDigital output: 2x NC/NO, maximum 60 V_, 30 V~, 0.5 AModbus RS 485 RTUUSB |
| Operation and display |
Status LEDSoftware D-ESI 100***Optional: Control Unit D-ISC 100 |
| Control functions |
Automatic zero point and reference point measurement, automatic contamination measurement and compensation |
| Light source |
Laser, class 2 in accordance with EN 60825-1, < 1 mW at 650 nm |
* Weather protection required for outdoor installation
** Depending on flue gas velocity and operating mode
*** Enables remote access via web interface, requires PC with Windows operating system
