The ultra-low smoke detector mainly consists of three parts: electrical system, optical system, and structure.

The electrical system adopts digital signal processing technology and advanced lock-in amplification technology, and is divided into laser emitting part, signal receiving part, central processing unit, and input/output interface according to functions. The optical system is composed of special optical components such as a distribution housing, extraction probe, flange, etc.

Characteristics of ultra-low smoke detector:

The small range is 0-10mg/m3, and the large range can reach 0-100mg/m3, which can be automatically switched;

Low detection limit, as low as 0.1mg/m3;

Extracting high-temperature heat tracing from chimneys can eliminate measurement errors caused by water droplets and can be applied in high humidity environments;

Adjust the extraction flow rate according to the flue gas flow rate;

Single side installation, extraction and exhaust are all on the same flange, easy to debug;

The length of the extraction tube can be selected according to the working conditions, compatible with conventional flanges, and can be directly replaced for installation;

Automatic testing and calibration of pollution level.

Working Principle:

The LBT-30 uses the principle of scattered light measurement because it is very sensitive for measuring low concentrations of particulate matter. When the modulated laser is irradiated onto an airflow containing dust particles, the scattered light generated by the irradiated particles is received by a high-sensitivity detector. The received signal is amplified and calculated by a data processing system to display real-time dust concentration values.

Technical Specifications

Basic Parameters

Detection Principle

Laser scattering method

range

0-10mg/m3, 0-100mg/m3 (range can be automatically switched)

precision

±2%FS

Laser wavelength

650nm

size

413*271*563mm， The length of the extraction tube can be customized according to the working conditions

weight

30kg including flange

input

relay output

5 channels, contact 2A/30V, passive

Discrete input

Active, 24VDC

analog output

1 isolated 4-20mA output, load 500 Ω

communication port

Default RS485, customizable RS232.

communication parameters

The default baud rate is 9600; 8-bit data; 1 stop; No verification

communication protocol

Standard Modbus protocol, customizable

Usage environment

ambient temperature

-20~50℃

Protection level

IP65

Power supply requirements

220V±10%AC

power consumption

600W

flue gas pressure

-5KPa~1KPa

flue gas temperature

＜250℃

Compression hole gas requirements

0.1 ~1MPa， Dust free and oil-free, with a dosage of 100L/min