D-FL 220
VOLUME FLOW MEASURING SYSTEM
For continuous, contactless volume flow measurement in dry and humid gases. Reliable, even under demanding operating conditions.
- Technology: Non-contact ultrasonic measurement, evaluating transit times of pulses across the duct
- Reliability: Accurate in harsh conditions, including high dust/moisture, and at low flow speeds (< 3 m/s)
- Application: Continuous emission monitoring (CEM), filter monitoring, and general process monitoring in ducts, tunnels, and large flues
- Maintenance: Very low maintenance thanks to self-checking functions and corrosion-resistant ultrasonic transducers
- Installation: Easy, tool-free sensor exchange and adjustment; can operate standalone without a separate control box
- Operation: Remote access via web interface; supports multiple outputs (analog, RS485 MODBUS)
- Benefits: Certified for official monitoring, precise, long service life, and high availability
- Regulatory Compliance: Used for continuous emission monitoring in line with official standards such as EU IED and US EPA PS6.
- Harsh Gas Environments: Suitable for humid, corrosive, and high-dust conditions thanks to its non-contact, purged sensor design, allowing operation below the dew point.
- Volume Flow Measurement: Provides accurate flow monitoring for process optimization across multiple industries, including:
- Power plants (coal, oil, gas, biomass)
- Waste and crematory incinerators
- Cement manufacturing plants
- Petrochemical facilities
- Tunnel Ventilation: The D-FL 220T version supports monitoring of air flow speed and direction in road and railway tunnels.
- Measuring Principle: Ultrasonic transit time difference method (non-contact).
- Measured Variables: Gas velocity, volume flow, flow direction, and temperature.
- Measuring Range:
- Velocity: 0–40 m/s
- Volume Flow: 0–5,000,000 m³/h
- Gas Temperature Capability:
- Up to 200°C (standard)
- Up to 400°C (optional)
- Accuracy: Combined standard uncertainty < 0.34 m/s (QAL1 certified).
- Protection Class: IP65 measuring head (IEC 60529).
- Outputs:
- 4–20 mA
- Modbus RTU (bidirectional)
- Digital relay outputs
- Power Supply:
- 24 VDC (sensor)
- 115/230 VAC (control unit)
- Application: Suitable for flue gas and process gas measurement in pipes/ducts, including humid or aggressive gases.
