Product Overview
Electrostatic Dust Monitor
The LT-5300 uses proven triboelectric charge induction technology to detect the presence and relative flow of dust particles in ducts, stacks, and pneumatic conveying lines. As particles pass the probe, they generate a small electrostatic charge - amplified into a stable 4–20 mA signal for real-time monitoring, alarm triggering, and trend logging.
Designed for harsh industrial environments, it requires no cleaning, no consumables, and no routine calibration. While not intended for regulatory CEMS reporting, it delivers unmatched reliability for:
- Early detection of baghouse filter failures
- Monitoring material loss in pneumatic transport
- Tracking dust trends during combustion or grinding
Main functions
High-Sensitivity Triboelectric Detection
Leverages charge induction technology to detect even trace levels of particulate flow with excellent linearity and fast response-ideal for early warning of filter leaks or process upsets.
01
Robust 4–20 mA Signal for Industrial Integration
Delivers a standard two-wire 4–20 mA output with strong noise immunity, enabling reliable long-distance transmission over standard cables. The signal is linearly proportional to dust mass flow rate, simplifying integration with PLCs, DCS, or SCADA systems.
02
Galvanic Isolation for Signal Safety
The transmitter electronics are fully electrically isolated from the sensing probe within the junction box, ensuring operator safety and preventing ground-loop interference in complex electrical environments.
03
Plug-and-Play Installation
Designed to install and operate exactly like a conventional two-wire pressure transmitter. Field engineers can mount, wire, and commission the unit without specialized training or tools-reducing deployment time and cost.
04
Truly Maintenance-Free Operation
Unlike optical sensors, dust buildup on the probe does not degrade performance. No cleaning, purging, or recalibration is required-even in high-load or sticky-dust applications-ensuring years of uninterrupted service.
05
Technical Parameter
|
Category |
Parameter |
|
Measurement Range |
0–9 / 12 / 25 / 50 / 100 / 200 / 400 / 800 / 1000 mg/m³ (selectable ranges) |
|
Transmitter Output |
- 4–20 mA (standard) |
|
Power Supply |
24 V DC |
|
Operating Environment |
|
|
• Temperature |
–20 °C to +60 °C (for electronic components) |
|
• Humidity |
≤ 90% RH, non-condensing |
|
• EMF Immunity |
Max. electromagnetic field strength: 60 A/m at 50 Hz |
|
Process Conditions (Pipeline) |
|
|
• Gas Pressure |
–0.1 to 1 MPa |
|
• Gas Flow Rate |
1 m/s to 30 m/s |
|
• Gas Temperature |
–50 °C to +450 °C |
|
Probe Material |
304 Stainless Steel |
Product Features
The PM-Tribo electrostatic dust monitor is engineered for demanding industrial environments where reliable particulate detection is critical to operational safety and efficiency. Its robust design and maintenance-free operation make it the go-to solution for:
- Baghouse Filter Integrity Monitoring: Instantly detect torn or leaking filter bags-preventing product loss, downstream equipment damage, and visible emissions.
- Pneumatic Conveying & Material Transfer Control: Monitor powder flow in transport lines to verify material movement, identify blockages, and support loss-recovery systems.
- Process Dust Trending in High-Temperature Ducts: Operate reliably at probe temperatures up to 450°C, ideal for boiler exhausts, kiln inlets, and sinter plant ducts.
- Cross-Industry Versatility:
Proven in:
• Cement & Lime Production
• Thermal Power & Biomass Boilers
• Steel Sintering & Pelletizing
• Petrochemical & Refining (e.g., FCC catalyst monitoring)
• Mining, Minerals Processing, and Bulk Material Handling
Note: This device provides real-time dust presence and relative flow trends-not certified mg/m³ values for regulatory CEMS reporting. It is designed for process protection, early warning, and operational insight.
Why choose our electrostatic dust detector?
Stable, Low-Drift Performance - Built for Years of Unattended Operation
Our AC-coupled triboelectric sensing circuit delivers exceptional long-term stability:
Zero and span drift ≤1% of full scale per year
Integrated 50/60 Hz noise filtering ensures clean signals even near motors or VFDs
Reliable detection of particles from 0.1 μm to 200 μm - including fine fly ash and submicron powders
The result? Consistent trend data you can trust for predictive maintenance, process alarms, and internal emission tracking - without constant recalibration.
Engineered for the Harshest Industrial Environments
- From arctic winters to red-hot kiln ducts, PM-Tribo keeps working:
- Probe rated for –50°C to +450°C - no cooling jackets needed
- IP66 / NEMA 4 aluminum housing withstands rain, dust, and chemical washdown
- 304 stainless steel probe resists erosion, vibration, and EMI (tested up to 60 A/m @ 50 Hz)
- Operates across 1–30 m/s gas velocity and –0.1 to +1 MPa pressure in pipes up to 4 m diameter
No other bag leak detector offers this combination of temperature range, ruggedness, and signal integrity.
Proven Value Across Core Heavy Industries - Beyond Just Compliance
While not a CEMS device, PM-Tribo delivers critical operational value where dust matters most:
- Cement: Catch torn bags before clinker contamination occurs
- Power & Biomass: Detect ESP or baghouse failures during boiler startups
- Steel: Monitor sinter plant emissions to avoid visible plumes
- Chemical & Mining: Ensure integrity of pneumatic transfer lines and prevent product loss
You get dual benefits:
Protect your equipment (filters, fans, catalysts)
Support sustainability goals with early dust surge alerts - helping you stay ahead of regulatory scrutiny, even if the data isn't used for formal reporting.
Clarification: This system is designed for process monitoring and equipment protection, not for legal emission compliance under EPA, EN 14181, or equivalent CEMS standards.
FAQ
Q1: What is the core measurement principle of this detector?
The PM-Tribo uses triboelectric charge induction: as dust particles pass the probe, friction generates a small electrostatic charge proportional to the mass flow rate of particulates (mg/s). This signal is amplified by a high-stability AC-coupled circuit, filtered to reject electrical noise, and converted into a linear output (e.g., 4–20 mA). The system can trigger alarms for abnormal dust surges and log trends over time-ideal for detecting filter failures or process upsets.
⚠️ Note: While the output correlates with dust loading, it does not provide certified mg/m³ values for regulatory emission reporting.
Q2: What particle size range can the detector measure? Does it respond outside this range?
The system is optimized for particles between 0.1 μm and 200 μm, which covers most industrial dusts-including fine fly ash, cement kiln dust, and metal oxides. It may still detect particles outside this range, but sensitivity and linearity are not guaranteed. For reliable performance, we recommend use within the specified range.
Q3: What are the installation requirements for the environment and pipeline?
The PM-Tribo is built for tough industrial settings:
Electronics enclosure:
• Operating temperature: –20°C to +60°C
• Humidity: ≤90% RH, non-condensing
• Protection rating: IP66 / NEMA 4 (dust-tight and water-jet resistant)
• Resists continuous vibration (2g) and EMI up to 60 A/m at 50 Hz
Pipeline conditions:
• Gas temperature: –50°C to +450°C
• Pressure: –0.1 to +1 MPa
• Flow velocity: 1–30 m/s
• Pipe diameter: 100 mm to 4,000 mm
• Probe: 304 stainless steel, Ø8 mm, M5 thread
No purge air, cooling, or special mounting hardware is required.
Q4: What output signals and communication options are available? What systems can it connect to?
Standard output: Two-wire 4–20 mA, linearly proportional to dust mass flow-directly compatible with PLCs, DCS, and SCADA systems using standard instrumentation cables.
Optional: RS485 (Modbus RTU) for remote data logging, network integration, or connection to plant-wide monitoring platforms.
Thanks to galvanic isolation and robust signal design, the device integrates seamlessly into industrial automation architectures-without requiring shielded cables or signal conditioners.
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