DURAG offers a versatile range of dust monitoring solutions designed for continuous, accurate, and contactless measurement of particulate emissions in industrial flue and process gases. These systems are essential for environmental compliance, process optimization, and emission control across various industries.

Core Capabilities

• Continuous measurement of dust concentrations in dry and humid gases.
• Certified systems for regulatory emission monitoring (e.g., QAL1, EN 15267, US EPA).
• Low-maintenance designs with robust construction for harsh environments.
• Real-time data transmission to plant control systems and environmental authorities.

Measurement Principles

DURAG dust monitors utilize different physical principles depending on the application:

• Transmission principle: Light passes through the gas stream and is measured after reflection, ideal for dry gases.
• Backward scattering: Measures light scattered by particles, suitable for low to medium concentrations.
• Tribo-electric principle: Detects particle collisions with a probe, used for filter leak detection.
• Extractive methods: For wet gases or complex conditions, where sample handling is required.

Product Categories

1. In-situ Dust Monitors
   • For direct, contactless measurement in the duct.
   • Examples: D-R 320, D-R 808
   • Suitable for dry gases, corrosive environments, and explosive atmospheres.
2. Filter Leak Detectors
   • Detect early-stage filter failures in baghouses and dust collectors.
   • Example: D-FW 410
   • Helps reduce maintenance costs and prevent environmental violations.
3. Opacity Monitors
   • Measure the reduction in light transmission due to particulate matter.
   • Used for regulatory compliance and process visibility.
4. Extractive Dust Monitors
   • Designed for wet or sticky gas streams.
   • Example: D-R 909
   • Ideal for waste incineration and complex industrial processes.

Applications

• Power generation
• Cement and building materials
• Waste incineration
• Chemical and metal industries
• Food and grain processing
• Environmental monitoring stations

System Components

• Measuring head (sender/receiver)
• Reflector or probe
• Control and supply unit
• Optional purge air systems
• Operating units with display and remote access

D-R 909

Extractive dust monitor

Extractive continuous dust measurement of small to medium dust concentrations in wet flue and process gases even under difficult plant conditions.

• QAL1-certified 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

More information