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We are committed to a green future

Our green technology helps to improve and protect the environment

To become a world-class brand of environmental monitoring equipment and solutions

Manage expert solutions to monitor and improve environmental quality

SDL advises and implements the latest green technology

ABOUT US

Beijing SDL Technology Co., Ltd., established in 2001 with a registered capital of 630 million yuan, is a high-tech enterprise integrating R&D, design, production, sales and service. The company's business revolves around ecological environment monitoring, which mainly includes pollution source emission monitoring, atmospheric environment quality monitoring, water environment quality monitoring, ecological environment big data, industrial process analysis, third-party testing, pollution control and energy conservation.

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MAIN BUSINESS

Environment Monitoring
  • Pollution source emission

  • Atmospheric environment quality

  • Water environment quality

  • Emergency / Portable

  • Carbon emission

NEWS CENTER

01-19 / 2024 SDL successfully applied for the National Key Research and Development Program of the Ministry of Science and Technology

06-01 / 2023 Ministry of Ecology and Environment: Steadily expanding carbon monitoring and assessment pilot work in thermal power and steel industries

05-31 / 2024 SDL promotional video

PRODUCT CENTERSee more

PRODUCT CENTER

SCS-900/900C Infrared flue gas continuous monitoring system

01

The infrared flue gas continuous monitoring system (SCS-900/900C) adopts a cold-dry complete extraction + water and dust removal pretreatment system, combined with a non-dispersive infrared gas analyzer, to continuously measure SO₂, CO, NO and other pollutant gases in the flue gas online. Concentration and greenhouse gases such as CO₂, CH₄, N₂O, and flue gas parameters (temperature, pressure, flow rate or flow, humidity, oxygen content, etc.) are uploaded to the environmental management department through data acquisition and transmission devices.

Detail

SCS-900UV/NU UV smoke continuous monitoring system

02

The UV flue gas continuous monitoring system (SCS-900UV/900NU) adopts a cold-dry complete extraction + water and dust removal pretreatment system, combined with a UV gas analyzer, to continuously measure the concentration of SO₂, NO, NO₂ and other pollutant gases in the flue gas online. By adding a non-dispersive infrared module, the concentration of greenhouse gases such as CO₂, CH₄, and N₂O in the flue gas can be continuously measured online. At the same time, the flue gas parameters (temperature, pressure, flow rate or flow, humidity, oxygen content, etc.) can be monitored. Through the data The collection and transmission device uploads monitoring data to the environmental management department. The ultraviolet absorption method analyzes gaseous pollutants, avoiding the interference of water, dust and hydrocarbons on the analyzer.

Detail

SCS-900FT Fourier transform infrared flue gas continuous monitoring system

03

The Fourier infrared flue gas continuous monitoring system (SCS-900FT) adopts high-temperature heat and moisture extraction sampling throughout the entire process. It uses Finnish Gasmet\'s Fourier infrared technology combined with a simple and reliable high-temperature sample pretreatment system. The system can simultaneously and quickly measure the concentration of pollutant gases such as SO₂, NO, NO₂, CO, HCL, HF, NH₃ and greenhouse gases such as CO₂, CH₄, N₂O, SF₆, NF₃ and other greenhouse gases in flue gas. Full-process high-temperature sampling, especially suitable for waste incineration industry and special process gas detection with low concentration, high humidity, strong corrosiveness and complex gas composition.

Detail

SCS-900D High temperature infrared flue gas continuous monitoring system

04

The high-temperature infrared flue gas emission continuous monitoring system (SCS-900D) adopts high-temperature heat and moisture extraction sampling throughout the entire process. It adopts Germany\'s Födisch advanced GFC/IFC photometric technology combined with a simple and reliable high-temperature sample pretreatment system. The system can simultaneously measure the concentration of pollutant gases such as SO₂, NO, NO₂, CO, HCL, HF, NH₃ and greenhouse gases such as CO₂, CH₄, N₂O in flue gas. Full-process high-temperature sampling, especially suitable for waste incineration industry and special process gas detection with low concentration, high humidity, strong corrosiveness and complex gas composition.

Detail

SCS-900X Dilution method flue gas continuous monitoring system

05

The dilution method flue gas continuous monitoring system (SCS-900X) uses dilution extraction sampling and is equipped with ultraviolet fluorescence and chemiluminescence gas analyzers. This system can simultaneously measure the concentration of pollutant gases such as SO₂, NOx and greenhouse gases such as CO₂ in the flue gas. The whole-process hot and moisture sampling can reduce the measurement interference caused by the components to be measured being dissolved in water. The ppb level analyzer is especially suitable for continuous measurement under low concentration and high humidity flue gas environmental conditions.

Detail

MODEL 2030 In-situ laser backscattering dust meter

06

In-situ laser backscattering method dust meter (MODEL 2030) adopts single-end in-situ installation method and laser backscattering method, which is used to monitor high concentration and ultra-low emission particulate matter in dry flue gas.

Detail

SCS-900VI VOCs emission continuous monitoring system

07

The SCS-900VI pollution source exhaust gas volatile organic compound online monitoring system uses a full-process high-temperature extraction sampling method combined with chromatographic analysis technology to automatically monitor non-methane total hydrocarbons, characteristic VOCs component concentrations and exhaust gas parameters (smoke temperature, pressure, flow rate, etc.) in the pollution source exhaust gas. humidity, oxygen), and upload the measurement data to the environmental management department. Relying on Xuedilong\'s many years of industry experience in the field of industrial process and environmental monitoring, it can be flexibly configured according to different process conditions to meet the needs of users. The system is cost-effective, stable and reliable, and requires low maintenance.

Detail

AQMS-900 Ambient air quality continuous automatic monitoring system

01

AQMS-900 continuous automatic monitoring system for ambient air quality is suitable for the environmental air quality monitoring needs of various environmental management departments. The system is designed in accordance with national standards and is mainly used in urban ambient air quality assessment, factory boundary ambient air quality monitoring, etc. The system has the functions of real-time collection, transmission, management, analysis and evaluation of monitoring data.

Detail

AQMS-900HM Automatic monitoring system for atmospheric inorganic elements

02

The AQMS-900HM atmospheric inorganic element automatic monitoring system adopts the principle of XRF technology and can achieve continuous online monitoring of lead, arsenic, chromium, cadmium, mercury and other inorganic elements in particulate matter such as TSP, PM₁₀, PM₂.₅ and PM₁ in the ambient air. . Meeting the needs of various environmental management departments or enterprises for monitoring the composition of inorganic element pollution sources in the atmosphere, emission monitoring, and total quantity control is of great significance to improving the air quality evaluation system.

Detail

AQMS-900C-PM₂.₅ Ambient air particulate matter PM₂.₅ continuous automatic monitoring system

03

The AQMS-900C-PM₂.₅ ambient air particulate matter PM₂.₅ continuous automatic monitoring system uses beta-ray absorption combined with light scattering technology and is equipped with different sampling heads. It can perform real-time continuous measurement of particulate matter PM₂.₅ and PM₁ mass concentration in the ambient air. . The sturdy and reliable outdoor design provides continuous, accurate, reliable and traceable monitoring data for dust prevention and control on roads, construction sites, storage yards, etc. No cabinets or station buildings are required, and installation is easy. Suitable for a variety of working conditions, simple to operate and require less daily maintenance.

Detail

AQMS-900C-PM₁₀ Ambient air particulate matter PM₁₀continuous automatic monitoring system

04

The AQMS-900C-PM₁₀Ambient air particulate matter PM₁₀continuous automatic monitoring system is based on the principle of beta-ray absorption combined with light scattering. It is equipped with different sampling heads and can perform real-time continuous measurement of the mass concentration of particulate matter TSP and PM₁₀ in the ambient air. The sturdy and reliable outdoor design provides continuous, accurate, reliable and traceable monitoring data for dust prevention and control on roads, construction sites, storage yards, etc. There is no need for cabinets and station buildings, it is easy to install, suitable for different working conditions, simple to operate and requires little daily maintenance.

Detail

AQMS-1100 Micro ambient air quality monitoring system

05

The AQMS-1100 micro ambient air quality monitoring system uses high-performance sensor technology, combined with embedded technology and network communication technology, to conduct online continuous monitoring of pollutants in the ambient air and monitor ambient air quality conditions in real time. The system can monitor gaseous pollutants such as sulfur dioxide (SO₂), nitrogen dioxide (NO₂), carbon monoxide (CO), ozone (O₃), volatile organic compounds (TVOC), etc. in the air, as well as PM₁₀, PM₂.₅ in the air. and other particulate matter pollutants, and can expand the five meteorological parameters at the same time.

Detail

MODEL 2130 Dust online monitoring system

06

The MODEL 2130 dust online monitoring system is based on the principle of light scattering. It can continuously and automatically monitor the concentration of TSP, PM₁₀, and PM₂.₅ in the ambient air without any supervision. It can be expanded to five meteorological parameters, noise, LED display, video, etc. It is used for continuous automatic monitoring of key monitoring areas and various acoustic environment functional areas, and transmits data through wired or wireless methods. It is a comprehensive dust monitoring system integrating data collection, real-time display, statistical analysis, early warning and alarm functions.

Detail

AQMS-900VI/VII Ambient air non-methane total hydrocarbon online monitoring system

07

AQMS-900VI/VII ambient air/factory boundary NMHC online monitoring system relies on Belgian ORTHODYNE S.A. chromatography technology. Snowdiron independently developed the MODEL 6000 industrial gas chromatograph. It adopts two technical routes: direct method and differential subtraction method to automatically monitor ambient air. The concentration of non-methane total hydrocarbons, benzene, toluene, xylene, halogenated hydrocarbons and other gas components can meet the different application needs of customers.

Detail

AQMS-900VC Ambient air VOCs online monitoring system

08

The AQMS-900VC ambient air VOCs online monitoring system adopts GC-FID technology. The online gas chromatography analyzer introduces Belgian ORTHODYNE S.A. technology, which can continuously monitor the concentration of organic pollutant components such as ozone precursors in the ambient air.

Detail

MCS-900V Atmospheric composite pollution navigation monitoring vehicle

09

MCS-900V atmospheric composite pollution navigation monitoring vehicle is equipped with atmospheric VOCs fast time-of-flight mass spectrometer PTR-TOF, ambient air VOCs online monitoring system, ambient air quality monitoring station, micro air station, lidar, meteorological instrument, video monitoring, etc., using It has two measurement modes, traveling and parking, to realize online continuous monitoring of particulate matter and gaseous pollutants, and navigation and source tracing functions.

Detail

WQMS-900 Fixed automatic water quality monitoring system

01

WQMS-900 fixed automatic water quality monitoring system is a comprehensive water quality early warning monitoring system with online automatic analysis instruments as the core and using modern sensor technology, automatic measurement technology, automatic control technology, computer application technology, communication technology and big data analysis technology. , mainly used in the assessment of water environment quality at river monitoring sections and lake and reservoir monitoring points. Through online continuous monitoring of monitoring factors, it assists environmental management departments in building a scientific and effective comprehensive water environment supervision system.

Detail

WQMS-900F Buoy-type water quality automatic monitoring system

02

The buoy-type water quality automatic monitoring system adopts real-time, online, full-spectrum automatic monitoring technology and multi-parameter integration technology. It uses the buoy body as a carrier and is equipped with a variety of sensors to achieve real-time online monitoring of water quality. The data is transmitted to the server receiver through the wireless network, and real-time data can be viewed through the system management software and application service platform, thereby achieving long-term continuous monitoring of water quality in rivers, reservoirs, lakes and other water bodies, and providing information for environmental emergencies such as red tides and algae blooms. Early warning information provides timely and effective data and technical support for environmental protection, scientific research and public services.

Detail

WCS-900W Water quality mobile monitoring system

03

The mobile water quality monitoring vehicle consists of a vehicle body, electrical system, data acquisition and transmission system, lighting system, ventilation and exhaust system, temperature and humidity control system, water supply and drainage system, waste liquid collection system, etc. Not restricted by location, time, or season, when a sudden environmental pollution accident occurs, they can quickly enter the pollution site. Monitoring personnel use monitoring instruments to identify the type and degree of pollutants, and at the same time, promptly collect and transmit data through the data collection and transmission system. Report the on-site situation to relevant departments.

Detail

MODEL 9880 Water quality biological comprehensive toxicity online monitor

04

According to the principle of microbial fuel cells, electrochemically active electrogenic microorganisms (electrogenic bacteria) are used as anode catalysts to oxidize and decompose organic matter in the water. The generated electrons are transferred along the electrode to generate current, which directly converts chemical energy into electrical energy. The current signal passes through The load amplifies the voltage signal and converts the voltage signal into a visible toxicity value through a calculation formula. When toxic substances flow in, the activity of electrogenic bacteria decreases, resulting in a decrease in current; when nutrient organic matter flows in, the activity of electrogenic bacteria increases, resulting in an increase in current. The inflow of toxic substances or nutrient-type organic matter is judged by the sharp decrease and increase of current (voltage), and real-time monitoring and analysis of toxic substances and loaded organic matter in water bodies can be realized.

Detail

MODEL 9001 Chlorophyll a water quality online automatic monitor

05

The chlorophyll a water quality online automatic monitor consists of a controller and a chlorophyll a sensor. The controller can be connected to two sensors at the same time, and has various output interfaces such as analog, digital, and switching. The sensor outputs RS485 signal, which has stronger anti-interference ability.

Detail

MODEL 9002 Algae density and water quality online automatic monitor

06

The algae density and water quality online automatic monitor consists of a controller and a blue-green algae density sensor. The controller can be connected to two sensors at the same time, and has various output interfaces such as analog, digital, and switching. The sensor outputs RS485 signal, which has stronger anti-interference ability.

Detail

MODEL 9820 Ammonia nitrogen water quality online automatic monitor

07

MODEL 9820 ammonia nitrogen water quality online automatic monitor is a water quality analysis instrument developed by Xuedilong with completely independent intellectual property rights. It has an instrument suitability test report issued by the Environmental Monitoring Instrument Quality Supervision and Inspection Center and a CCEP certificate issued by the Central Environmental Protection Association Certification Center. The monitor uses salicylic acid spectrophotometry and complies with the relevant provisions of the "HJ 101-2019 Technical Requirements and Detection Methods for Online Automatic Ammonia Nitrogen Water Quality Monitors" standard. At the same time, it can resist the interference of turbidity factors in the water body and ensure the accuracy of test results.

Detail

WWMS-900 Pollution source water quality online monitoring system

08

The pollution source water quality online monitoring system is suitable for the needs of various sewage discharge companies to monitor and control the pollution source water quality. The system is designed in accordance with the 2020 National Technical Specifications (HJ353-2019) and other standards. It is a system composed of software and hardware facilities that implement functions such as water pollution source flow monitoring, water pollution source water sample collection, analysis, and analysis data statistics and uploading. The system has the functions of real-time collection, transmission, management, quality control, and reverse control of monitoring data. It also has the function of analyzing the operation of water quality treatment facilities and controlling the total amount of sewage discharge.

Detail

MS-200 Portable time-of-flight mass spectrometer

01

The MS-200 portable time-of-flight mass spectrometer is used to quickly detect VOCs in gaseous samples on site. It samples directly through a double-membrane sampling system without the need to separate and preconcentrate the sample. The instrument uses polycyclic time-of-flight mass spectrometry analysis technology to effectively improve the sensitivity of the instrument. Using the classic EI ion source, it can be seamlessly connected to the NIST mass spectrometry database certified by the laboratory today. Combined with the automatic mixture analysis software that comes with the instrument, it can analyze a variety of gas components in the concentration range from ppb to percentage (%). Rapid qualitative and quantitative analysis. Built-in battery drive can maintain long-term high-frequency operation (>6 hours), realizing rapid monitoring from the laboratory to the field.

Detail

MODEL 3080UV Portable UV Gas Analyzer

02

The portable UV gas analyzer (MODEL 3080UV) uses differential ultraviolet absorption spectroscopy (DOAS) without sample separation. It is suitable for on-site rapid detection of characteristic gas components such as SO₂, NO, NO₂, NH₃, O₂, H₂O in gaseous samples. The specially designed gas cell and optical path structure, as well as high-sensitivity imported core components, ensure the reliability, stability and accuracy of the measurement results of the instrument. Compact and lightweight design realizes the portability of the instrument. The system has high-temperature heating throughout the entire process and is particularly suitable for monitoring pollutants with ultra-low emission characteristics under high-humidity and low-sulfur working conditions.

Detail

MODEL 3080GC-NMHC Portable Gas Chromatograph

03

The MODEL3080GC-NMHC portable gas chromatograph uses the GC-FID principle to measure the content of methane, total hydrocarbons, and non-methane total hydrocarbons in ambient air or waste gas from fixed pollution sources. It can select benzene series (benzene, toluene, o-xylene, m-di The content of toluene and p-xylene) complies with the national environmental protection standard "Technical Requirements and Detection Methods for Portable Monitors of Total Hydrocarbons, Methane and Non-Methane Total Hydrocarbons in Ambient Air and Exhaust Gas" (HJ1012-2018), which can achieve high precision and high Sensitivity and high stability for continuous measurements.

Detail

MODEL 3080GC Portable Gas Chromatograph

04

MODEL3080GC uses the GC-FID principle to measure the content of methane, total hydrocarbons, and non-methane total hydrocarbons in ambient air or waste gas from fixed pollution sources. It can select benzene series (benzene, toluene, o-xylene, m-xylene and p-xylene). ) content, in line with the national environmental protection standard "Technical Requirements and Detection Methods for Portable Monitors of Total Hydrocarbons, Methane and Non-Methane Total Hydrocarbons in Ambient Air and Exhaust Gas" (HJ1012-2018), which can achieve accurate, sensitive and stable on-site continuous measurement.

Detail

MODEL 3080Hg Portable flue gas mercury analyzer

05

MODEL 3080Hg portable flue gas mercury analyzer is used to measure gaseous total mercury and O₂ concentration in flue gas. It adopts stable and reliable cold atomic absorption spectrometry technology. It does not require mercury pre-enrichment operation. It can measure online in real time and is sensitive and stable. advantage.

Detail

CQCS-1000 Smoke online monitoring remote quality control system

01

The flue gas online monitoring remote quality control system (CQCS-1000) is a traceable and environmentally friendly pollution source emission monitoring quality control system developed by SDL. It can be used in conjunction with the flue gas emission monitoring system SCS-900 series products. Ensure the accuracy of pollutant gas emission and greenhouse gas emission measurement results. | Based on online monitoring data and through an intelligent quality control analysis platform, a corporate monitoring and early warning system is established to dynamically monitor corporate greenhouse gas and pollutant gas emissions, improve data quality, improve data supervision capabilities, and provide an accurate data basis for corporate carbon emission accounting. , assisting companies to better manage pollution emissions.

Detail

MODEL 3080 Portable Infrared Gas Analyzer

02

MODEL 3080 portable infrared gas analyzer adopts cold-dry complete extraction sampling, combined with water and dust removal pretreatment system and non-dispersive infrared technology. It is used to measure SO₂, NOx, CO, CO₂, O₂ and other gas concentrations in flue gas. Additional measurements are available. Flue gas flow, temperature, pressure and other parameters, and calculate combustion efficiency, excess air coefficient, total flue gas emissions, etc. Suitable for on-site rapid detection of pollutant gases and greenhouse gases in gaseous samples.

Detail

MODEL 3080FT Portable Fourier Transform Infrared Gas Analyzer

03

MODEL 3080FT portable Fourier transform infrared analyzer, using Fourier transform infrared spectroscopy technology (FTIR), does not require sample separation, and can measure VOCs, SO₂, NO, NO₂, CO, HCl, NH₃, H₂O, in ambient air and waste gas from fixed pollution sources. There are more than 50 kinds of characteristic gases such as O₂ and greenhouse gases such as CO₂, CH₄, N₂O, SF₆, and NF₃. The instrument uses carefully designed gas cells and optical path structures, high-precision interferometers, and high-sensitivity detectors to ensure the reliability, stability, and accuracy of instrument performance. The system has high-temperature heat tracing throughout, low adsorption and low loss, and can achieve accurate, sensitive and stable measurement of characteristic gases in high-temperature and high-humidity environments.

Detail

SCS-900/900C GHG carbon emission continuous monitoring system

04

The carbon emission continuous monitoring system (SCS-900/900C GHG) adopts a cold-dry complete extraction + water and dust removal pretreatment system, combined with a high-precision non-dispersive infrared gas analyzer, to continuously measure CO2, CH4, N2O, etc. in the flue gas online. Greenhouse gases, SO2, CO, NO, O2 and other gas concentrations and flue gas parameters (temperature, pressure, flow rate or flow, humidity, oxygen content, etc.) are uploaded to environmental protection departments at all levels through data acquisition and transmission devices.

Detail