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Industrial Laser Dust Sensor with Laser Backscattering and Single-End Installation for Real-Time 4-20mA Output Monitoring

Brand Name:	KLSK
Model Number:	WT-602
MOQ:	1PC
Price:	$1,200.00/pieces

Detail Information

Product Description

Detail Information

Place of Origin:

Jiangsu, China

Certification:

Document:

Product Brochure PDF

Warranty:

1 Years

Type:

Dust Analyzer

Customized Support:

OEM

Working Wavelength:

650nm

Product Name:

Dust Monitoring Equipment

Gas Analyzer Principle:

Scattered Light Backward

Application:

Online Stack Dust Monitor

Power:

24VDC+/-10%

Work Temperature:

-40 ℃-+50 ℃

Measure Range:

0~200mg/m3, 0~10g/m3

Signal Output:

(4-20) MA

Response Time:

≤ 10s

Packaging Details:

Standard exporting package-Carton box

Stock:

1PC

Highlight:

Laser Backscattering Technology Dust Monitor

Single-End Installation Laser Dust Sensor

4-20mA Analog Output Dust Meter

Product Description

WT602 Online Laser Dust Monitor

Industrial Particulate Matter Emission Monitoring System

WT602 is an online laser dust monitor developed for continuous measurement of particulate matter (PM) concentration in industrial stacks, flues, and exhaust ducts. Based on the laser backscattering principle, WT602 provides stable, real-time dust concentration data for environmental monitoring, emission control, and process optimization.

The instrument adopts single-end installation, does not require optical alignment, and can be directly mounted on chimneys or pipelines. It is widely used in power plants, cement plants, steel works, chemical and petrochemical industries, and can be easily integrated into CEMS, PLC, DCS, or SCADA systems.

Measurement Principle

WT602 uses a 650nm semiconductor laser (7mW) to emit a modulated beam into the flue gas. When dust particles pass through the laser beam, scattered light is generated. The backscattered light is collected by a photoelectric sensor and converted into electrical signals.

Through DSP digital signal processing, phase-locked amplification, modulation and demodulation, the system accurately calculates the dust concentration and outputs stable real-time values. This optical structure effectively avoids errors caused by gas temperature fluctuation, mechanical vibration, and refractive index changes in flue gas.

Key Features

Laser Backscattering Technology - stable and accurate in harsh industrial environments
Single-End Installation - no optical alignment required
On-Site Display - real-time dust concentration shown directly
Strong Anti-Interference - laser modulation & DSP processing
4-20mA Analog Output - compatible with PLC / DCS systems
RS485 Modbus RTU Communication (optional)
Low Power Consumption - only about 3W
No-Tool Installation Concept - easy maintenance
Purge Air Protection - prevents lens contamination
Offline Zero & Span Calibration with calibration block

Typical Applications

Power plants
Cement plants
Steel works
Chemical & petrochemical plants
Industrial boilers
Flue gas emission monitoring
Dust removal system process control

Installation & Maintenance

Flange mounting on stack or duct
Purge air connection (oil-free, water-free compressed air)
Zero & span calibration recommended every 3-6 months
Optical window cleaning cycle: 3-6 months
Designed for 24/7 continuous operation

Technical Specifications

Parameters	WT602
Principle	Laser backscatter
Working wavelength	650nm
Zero drift	±2%F.S./24h
Range drift	±2%F.S./24h
Indication error	±15%
Response time	≤ 10s
Diameter of flue	(1-15)m
Operating temperature	(-40~+65) ºC
Flue temperature	<200ºC
Flue pressure	<1Kpa
Signal output	(4-20) mA
Power supply	DC 24V ± 10%