TR-9300P flue gas (particulate matter) emission continuous monitoring system
TR-9 3 0 0 P flue gas (particulate) emission continuous monitoring system is a special online monitoring system designed and developed for environmental protection requirements such as wet electric dust removal and ultra-low emission. The system is equipped with a laser front scatter particulate matter meter, which has extremely high sensitivity and a minimum detection limit of 0. 005mg/ m 3 . The instrument consists of four parts: sampling and return unit, constant velocity tracking and control unit, heating and temperature control unit, and measurement and signal processing unit. The sampling and return unit completes the sampling and return process of the measured gas; Isokinetic tracking and control unit to complete the measurement of flue gas flow rate and sampling flow, and at the same time control the pumping force of the jet pump to change the sampling flow, so as to achieve the purpose of tracking sampling; The measurement and signal processing unit consists of an exciter, a measuring cavity, an optoelectronic converter, a blowback and air curtain device, and a calibration device, which measures the forward scattered light of the particles, converts the concentration of the particles into electrical signals, and then outputs them after conditioning conversion. The system meets the requirements of the relevant standards of the People's Republic of China environmental protection industry standards HJ 7 5-2 0 17 and HJ 7 6 - 2 0 17 standards, and has been obtained CC EP issued by the National Association of Environmental Protection Industries.
· particulate matter monitoring unit (dust);
· flue gas parameter monitoring unit (temperature, pressure, humidity, flow rate, oxygen content);
· data acquisition units (data acquisition instruments, industrial computers);
· Dust monitoring method: extractive laser front scattering method
· O2 monitoring method: zirconium oxygenation method
· Temperature Detection Method: Thermoelectric Resistance
· Pressure Detection Method: Differential Pressure Method
· Flow Detection Method: Pitot Tube Method
· Humidity monitoring method: capacitive method
| Particulate matter monitoring principle |
After collimation, the laser emitted by the laser is separated by a spectroscopic device to produce a trace reference light, and the main beam passes through the measuring chamber and meets the soot particles to produce forward scattered light, and the scattered light is received by the lens and then converted into a soot signal proportional to the concentration of soot particles through the signal fiber, and the concentration value of soot particles is output. The reference light of the measurement state is blocked by the chopping electromagnet, and the clean blowback air in the zero point calibration state enters the measurement chamber through the blowback port, the reference light is still blocked by the chopping electromagnet, there are no smoke particles in the air chamber, and a very small amount of background light received by the lens is automatically cancelled off by zeroing, so as to realize the automatic zeroing of the instrument. In the full-point calibration state, the air is blown back into the air chamber, and the reference light is introduced into the lens through the optical fiber after the chopping electromagnet is engaged as a full-scale calibration signal.
| How particulate matter systems work |
The following figure shows the flow path and control schematic. After the flue gas is heated through the sampling tube, it enters the heating and measuring gas chamber, and the suction force generated by the jet pump sends the flue gas back to the sampling point; The sampling volume is achieved by adjusting the volume of compressed air through the flow control valve; The dynamic pressure is converted into a flow velocity signal by the dynamic pressure measurement unit by the pitot tube, and the pressure difference of the reducer is sent to the flow measurement unit by the pressure taking pipe to convert into the sampling flow signal and the sampling flow rate, and the flow rate of the compressed gas is controlled according to the difference between the flow rate measured by the pitot tube and the sampling flow rate, and the control of the sampling flow rate is realized, and the purpose of tracking the flue gas flow rate of the sampling flow rate is achieved.
· The patented unique optical path structure has extremely high sensitivity and resolution;
· The patented unique extraction heating return gas circuit structure can be used in the case where the measured gas contains extremely high water mist;
· Equipped with an isodynamic tracking sampling module, the configuration of isokinetic sampling can be selected;
· The adaptive dynamic binning method is adopted, which has an extremely wide dynamic response range.
· Patented automatic zero point and automatic span calibration;
· Holding backflush and air curtain structure and solution method, resistant to window pollution;
· Unique structural design, integrated host and separate isodynamic tracking module, the overall weight of the host is less than 20KG, and a single person can complete the installation, commissioning and maintenance work.
| principle |
Laser forward scatter |
| Measure the object |
Soot, dust |
| Measuring range |
Min. (0~5) ( mg/m3 ), Max. (0~200) ( mg/ m3 ) |
| Zero and span drift |
≤ ±1 . 0 % F. S./week |
| Discernment |
Better than 0 . 005mg/ m 3 |
| Analog output |
4-20( mA) (Max. Output Load 500) |
| Digital output |
RS485 (support Modbus protocol) |
| Flue diameter |
(0 . 3-20) meters |
| Flue gas velocity |
0-30) m/ s |
| Blowback settings |
Automatic (the backflush interval can be set by yourself) |
| Sampling Method |
Extractive |
| The conditions of the medium to be measured |
1 0°C ~300°C (high temperature needs to be customized) |
| Ingress protection |
System IP65 |
| power supply |
220±10%(VAC) ,500W |
| Dimensions |
Host: 410mm*502mm*230mm;
Constant velocity sampling chamber: 404 mm x 300 mm x 140 mm |
| weight |
The main engine ≤ 15kg, and the constant velocity sampling box ≤ 7kg |
Company Profile
Chongqing J&X Automation Co., Ltd. Specializes in researching and manufacturing gas detection and alarm instruments, gas detectors, gas alarm controllers, toxic and harmful gas detection and alarm instruments, independent alarms, air quality monitors, infrared gas analyzers, laser methane remote sensing equipment, laser dust detectors, etc.
Our products are widely used in various industrial sites requiring explosion-proof and poisoning prevention, such as mining and metallurgy, environmental protection, archaeological exploration, steelmaking, petrochemicals, gas, municipal firefighting, refrigeration, cargo ships, pharmaceuticals, rubber, hazardous chemicals storage, and industrial manufacturing.
We focus on the market, pay attention to quality, continue to innovate, master core technologies, and serve with heart. The company has the detection equipment and technological conditions required for the production of gas detection instruments and is professional and dedicated. It has a high reputation in the field of gas detection and its customer recognition, providing strong guarantees for pre-sales consultation and after-sales service of the products sold.
The establishment, design, and research and development of our products are in line with market demands and quality and technical requirements. The instruments have exquisite appearance designs, stable detection data, and explosion-proof designs for both gas detectors and portable detectors. Our stable quality products have successively obtained national licenses for the manufacture of measuring instruments, national explosion-proof electrical product certificates, and national explosion-proof electrical equipment installation and repair qualifications.
Adhering to the service philosophy of "perfection, efficiency, and innovation, " we are dedicated to providing society and enterprises with safe and stable production and life security.
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