D-R 820 F – DUST MONITOR
Extractive measurement of humid flue or process gases. For monitoring small to medium dust concentrations.
Description
Functionality: Forward scattering
Features:
- Dilution of the sample
- Hyperkinetic gas extraction
- Single-sided installation on stack
- Automatic zero point and reference point check
- Automatic measurement of contamination and correction of measured values
- Local control panel and LC display
Benefits:
- Suitable for plants with variable gas velocity
- Long life time due to stable laser light source
- Easy commissioning, adjustment and maintenance without PC
Applications:
- Emission measurement of humid flue gases
- Measurement of humid process gases with small to medium concentrations
Technical Data:
| Measuring principle | Extraction of sample gas, dilution and heating for evaporation of H2O, forward scattering, single-sided installation |
|---|---|
| Measuring variable | Stray light units, calibratable as dust concentration in mg/m³ |
| Measuring range | Minimum 0 … 15 mg/m³Maximum 0 … 200 mg/m³ |
| Certified measuring range | 0 … 15 mg/m³ |
| Ambient conditions | Installation location: Indoor or outdoor installation*Temperature: -20 … +50 °C |
| Operating conditions in duct | Temperature: -25 … 220 °CRelative humidity: > 95 %, maximum 30 g/m³ H2O as aerosolRelative pressure: -30 … +2 hPa |
| Duct dimensions | Minimum inner diameter: 0.4 m |
| Interface | Analogue output: 4x 4 … 20 mA, maximum 1,000 Ohm, potential-freeDigital output: 4x NC/NO, maximum 35 VDC, 0.4 A |
| Operation and display | Supply and display unit on the measuring device |
| Control functions | Automatic zero point and reference point measurement, automatic contamination measurement and compensation |
| Light source | Laser diode, red, 650 nm |
* Weather protection cover required for outdoor installation
USP:
- Suitable for extreme plant conditions
- Low lifecycle costs
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