ONETEST-100D Pipeline Dust Monitor: Continuous, Calibration-Free Dust Detection for Industrial Flue Gas

Particulate emissions are one of the first parameters environmental inspectors ask about, and one of the last that plant operators can afford to guess. The ONETEST-100D pipeline dust monitor was developed for plants that need a continuous, trustworthy reading of dust concentration inside the flue gas line — without calibration routines, air purging or frequent cleaning. Manufactured by ONETEST in Shenzhen, China, the instrument combines a wear-resistant 316 stainless steel probe, proprietary probe protection technology and a 4-20mA linear output to deliver real-time particulate data straight into the plant control system.

Why Real-Time Pipeline Dust Monitoring Matters

A bag filter or cyclone that fails silently releases dust for days before anyone notices. Manual gravimetric sampling is accurate but slow, and it tells you what happened yesterday, not what is happening now. Continuous in-line monitoring closes that gap: the moment bag damage, filter rupture or an upset in the process pushes dust levels upward, the pipeline dust monitor reports it, alarms on it, and lets maintenance act before the stack turns visible.

The ONETEST-100D also supports emission reporting and compliance documentation. Its 4-20mA signal is linearly proportional to particle mass content, so a single analog input on the existing PLC or DCS is enough to log dust trends, capture peaks and produce average values for environmental records.

How the ONETEST-100D Works

A reliable sensor probe is mounted at the outlet of the flue gas pipeline, downstream of the dust collector. As dust particles pass near the probe, a weak charge signal is induced and carried through a dedicated coaxial cable to the control unit. The control unit processes that signal and outputs an absolute value that tracks particle mass concentration in real time.

To keep the measurement stable in difficult streams, ONETEST supplies proprietary probe protection technology that shields the sensor from conductive dust, condensate oil mist and water mist. The probe needs no air purging, and its 316 stainless steel body with Teflon protection resists both abrasion and corrosion. Installation is simple, calibration is not required, and the unit behaves as a genuine plug-and-play device.

Key Features at a Glance

• Simple operation, maintenance-free, highly reliable and no cleaning required
• 4-20mA analog output plus relay alarm for direct integration with PLC or DCS
• Continuous real-time and average dust concentration display
• On-site digital readout with LCD bar chart indication
• Dust peak capture and hold function for troubleshooting and audits
• Suitable for all common dust collector types and process dust flow detection
• Detects conductive, non-conductive, damp and corrosive particles above 10 µm
• IP66 protection, 24VDC power supply, CE and explosion-proof verification available

Technical Specifications

Where the Pipeline Dust Monitor Fits

• Flue gas pipelines and stacks after bag filters, cyclones or electrostatic precipitators
• Bag filter leak detection and baghouse maintenance planning
• Workshop and process area dust monitoring
• Atmospheric emission checks and environmental reporting
• Dust collection efficiency verification and process dust flow control

Detection requires a gas flow velocity above 3 m/s and particles larger than 10 microns; both are typical of most industrial extraction systems, while special working conditions can be reviewed with ONETEST engineers before selection.

Ordering, Delivery and Support

The ONETEST-100D pipeline dust monitor is available from a minimum order quantity of one piece, with payment by T/T and delivery in 5 to 15 working days. Monthly supply capacity is around 300 pieces, packed in cartons suitable for international shipping. Because insertion depth, temperature rating, pressure rating and process connection all depend on the installation point, buyers are encouraged to share pipe diameter, flue gas temperature and connection standard so the correct configuration is quoted first time.

For distributors, system integrators and environmental engineering contractors, the ONETEST-100D is a practical addition to a CEMS or dust suppression package: a single probe, a single 24VDC supply, a single 4-20mA loop, and continuous data from day one.