DURAG GROUP expands filter monitoring portfolio with launch of D FW 440 L and D FW 440 D
2026/02/18
Hamburg, February 18, 2026 – DURAG GROUP, a global leader in industrial combustion, environmental monitoring, and process visualization technologies, today announced the expansion of its triboelectric filter monitoring portfolio with the launch of two new products: the D-FW 440 L and D-FW 440 D. These advanced in situ dust monitors strengthen DURAG’s comprehensive offering for early filter leak detection, regulatory compliance, and optimized filtration performance across industrial applications.
With environmental responsibility, workplace safety, and operational efficiency becoming increasingly critical, industries require highly reliable instruments to monitor filter integrity and ensure emissions remain within permitted limits. DURAG’s expanded D-FW product family supports operators in detecting filter damage early, reducing unplanned downtime, and reduce dust emissions to the atmosphere.
A growing family of advanced triboelectric filter monitors
Triboelectric monitoring technology provides real time detection of electrostatic signals generated by dust particles inside ducts and stacks - ideal for baghouses, cartridge filters, and other dry filtration systems. DURAG’s new instruments combine robust industrial design with TÜV certifications.
D-FW 440 L – Certified filter leakage monitor
The D-FW 440 L is a TÜV certified in situ filter monitor engineered for reliable trend analysis and early leak detection.
Key features include:
- Certified to EN 15859 for filter leak detection, US EPA capable
- 4–20 mA output for trend analysis and filter control
- Ideal for basic process control and filter performance monitoring
- Cost-effective solution for applications not requiring dust concentration output
The D-FW 440 L enables accurate monitoring of gradual filter degradation, supporting proactive maintenance and stable plant operation.
D-FW 440 D – Advanced dust filter monitor with calibrated output
The D-FW 440 D sets a new benchmark for precision and compliance.
Key features include:
- Certified to EN 15859 and EN 14181, US EPA capable
- Provides calibrated dust concentration output in mg/m³
- Detects process disturbances such as cleaning cycle malfunctions and ventilation issues
- 4–20 mA output for emissions reporting to authorities, trend analysis and filter control
The D-FW 440 D ensures operators can document emissions reliably and meet stringent regulatory requirements with confidence.
Comprehensive filter monitoring for modern industry
With over 75 years of expertise in dust monitoring technologies, DURAG GROUP provides solutions that support:
- Early detection of filter damage or leaks
- Reduced maintenance costs and fewer unplanned shutdowns
- Enhanced environmental compliance
- Reliable documentation for audits and regulatory authorities
The complete D-FW product family now offers options ranging from cost effective leak detection to high precision emissions monitoring – allowing operators to select the ideal instrument for their process and compliance needs.
Commitment to cleaner, safer industry
“Industrial filtration systems are essential for both environmental protection and plant reliability. With the D-FW 440 L and D-FW 440 D, we are strengthening our support for customers who need accurate, certified, and robust instruments to keep their operations safe, compliant, and efficient,” said Dr. Alexandra Grosskopf, Product Manager at DURAG GmbH.
From baghouses to complex filtration trains and stack emission monitoring, DURAG’s solutions ensure operators receive real time insights and trustworthy data, empowering proactive decisions and long term operational excellence.
Availability
The D-FW 440 L and D-FW 440 D are available immediately worldwide through DURAG GROUP and its authorized partners.
About DURAG GROUP
DURAG GROUP is a leading global provider of intelligent solutions for combustion, environmental monitoring, and industrial process optimization. With more than seven decades of industry expertise, the company delivers trusted technologies that support safe, efficient, and sustainable operations across power generation, cement, metallurgy, chemicals, and numerous other sectors.
