1.2 Applicable occasions

This product also has mining safety certification（MA）Suitable for harsh environments such as coal mines, as well as metal and non-metal mines with explosive gas (dust) hazards; At present, according to the requirements of the Ministry of Environmental Protection, workplaces with explosive conditions must implement continuous monitoring of dust concentration and total dust.

Implement warning function in the following flammable and explosive places:

1Metal production and processing: aluminum powder, zinc powder, silicon iron powder, magnesium powder, iron powder, aluminum processing grinding powder, etc;

2Grain production and processing: wheat, starch, sugar, milk powder, corn flour, soybean flour, etc;

3Feed production and processing: blood meal, fish meal, corn meal, etc;

4Agricultural and sideline products: cotton, tobacco, tea powder, etc;

5Forest product categories: paper powder, wood powder, etc;

6Synthetic materials: plastics, rubber powder, dyes, food additives, etc;

7Drug processing category:Lactic acid bacteria granules, cisapride capsules, penicillin, Banlangen granules, etc

8.Coal powder and other places.

The dust concentration sensor, instrument, alarm, and power box are used to achieve online detection and real-time alarm of dust concentration in the workshop. Enterprises can grasp the dust concentration in the workshop in real time.2.1.1

Application of dust concentration sensorUsing the principle of light scattering to directly measure the total dust concentration, the measurement data is displayed on site, and the frequency that is compatible with the safety monitoring system is outputRS485(Choose one of the two signals)

For monitoring system processing, it is a monitoring instrument fixedly installed in the workplace. This sensor can be connected to a security monitoring system or used separately with a power source. The sensor consists of a sampling head, a detection device, a microcontroller system, and an exhaust system. Suitable for continuous monitoring of total dust concentration in the atmosphere of dust workplaces such as mines, cement plants, power plants, coal mines, construction sites, and research institutes. Can accurately and timely reflect the pollution status of dust in the workplace.2.1.2

Technical characteristics of dust concentration sensor1)

The rated working current is small, greatly reducing the burden on the on-site power supply;2) 12The input voltage range is wide, and the instrument operates within the input voltage range24Ｖ～ＶＤＣ(Intrinsic safety power supply)

3Can work normally within the scope;

）Directly read the mass concentration of dust particles in the air;4)

We have absorbed and digested advanced dust detection technologies both domestically and internationally, utilizing the principle of light scattering to detect dust. The detection data is processed by a microprocessor to directly display the dust mass concentration and convert it into a data signal output;5)

6By using infrared remote control to calibrate the parameters of the sensor, it is possible to adjust without opening the cover, making calibration easier;）Real time and accurate understanding of the dust concentration on site, as well as200-1000HZorRS485Signal, or achievable0-5V，4-20MAThe output of current can detect the trend of dust concentration changes, achieve long-distance transmission, and can also be compatible with various standards200-1000HZ

Secondary instrument connection for input.2.1.3

Main technical parameters of dust concentration sensor(1)

Measurement principle: light scattering principle;(2)

Measurement object: Dust mass concentration in coal mines or other dust workplaces containing gas or coal dust explosion hazards;(3)Measurement error: ≤±10%

；(4)Measurement range of total dust concentration:0mg/m³~1000 mg/m³ (customizable)

1ug/m3-50000ug/m3)；(5)Display mode: Four digits

DCS

3.1 Or industrial personal computer and other terminals can output on-off signals based on customer demand to linkage the fan or spray device for timely dust removal, so as to prevent dust exceeding the limit from endangering the safety of workers and enterprises.

1. System installation and implementation

   Installation location
   Hanging or fixing instrument brackets at dust detection points related to the production workshopMake the following preliminary configuration based on the picture:◆The online monitoring probe needs to be installed at a distance from the ground201.2-23At a height of meters, this height is more reasonable for dust monitoring. Dust accumulates and suspends evenly at this height, and the monitoring equipment is suitable for3About one square meter (refer to the actual spraying room in the figure below)