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Flue Gas Analyzer & Continuous Emission Monitoring Systems (CEMS)

Established in 1989, DXG made a significant stride in 1998 by achieving the localization of high-precision spectroscopic equipment. Leveraging years of experience in optical instrument development and manufacturing, DXG successfully introduced South Korea's inaugural domestic Flue Gas Analyzer. As a reputable enterprise, DXG specializes in designing and producing Gas Analyzers and Monitoring Systems for diverse applications, including power plants, incinerators, petrochemical complexes, and maritime vessels. This distinction has firmly positioned DXG as a premier manufacturer of Flue Gas...

HISTORY 1989 Foundation of DONGWOO OPTRON 2018 TUV Certification [Germany] CCEP Certification [China] 1998 Establishment of manufacturing facilities & R&D center 2019 Established South West Branch [Korea] 1999 Development of Spectrometer 2001 Headquarter Relocation to Gyeonggi Gwangju 2006 1st Presidential Commendation for Excellence in Precision Technology 2007 Development of Flue Gas Analyzer 2009 2nd Presidential Commendation for Excellence in Precision Technology First sales of flue gas analyzers to 5 major state-owned power plants in Korea 2020 Established 2nd Factory Established South...

GLOBAL EXPANSION In light of the worldwide surge in stringent environmental regulations, the environmental industry is undergoing substantial growth. DXG is strategically committed to global market expansion, evidenced by our proactive approach in obtaining major environmental certifications, including the US EPA, German TUV, Russian PAC, and Chinese CCEP.

* Explosion Proof Type Available

EXTRACTIVE MONITORING TYPE Gas is extracted from the designated sample point and subsequently directed through a heated sample line to the pre-conditioning facility. This preparatory stage involves the removal of moisture and particulate matter, ensuring that the gas is finely tuned to meet the precise measurement criteria of the analyzer. This approach allows for easy accessbility of the analyzer in challenging installation locations. By installing the equipment in a convenient location, optical gas measurement is achieved through pre-conditioning. Extractive method can vary in...

IN-SITU MONITORING TYPE The In-Situ method entails inserting a specialized probe into a chimney or duct through which gas is flowing. This probe enables the instantaneous measurement of gas concentrations within the internal space of the chimney or duct. One significant advantage of this approach is its rapid response time, enabling quick and precise measurements. Moreover, its streamlined installation and operational ease further enhance its practicality, as it negates the requirement for additional pre-conditioning process.

COAL POWER PLANT Measured Components NOx, SO2, NH3, CO, O2, Dust, Flow, Temp Glass, Ceramics Paper, Pulp Metal, Steel

Visible Near Infrared onization predissociation, dissociation Electronic transitions Vbrationa rotational transitions Light scattering by particles Opacity Monitors Ultraviolet, UV • Due to its short wavelength (200-400nm), it has low noise, resulting in high measurement precision. • With no water vapor absorption bands, it excludes moisture interference and ensures high precision. • Only absorption bands for NOx, SO2, and NH3 are present, making it unable to analyze gas components like CO and HCl. • It has the advantage of analyzing a wide variety of gas components. • Due to its longer...

Technical Specifications Measured Components SO2, NO, NO2, NH3 Measurement Principles Differential Optical Absorption Spectroscopy (DOAS) System Components Main Unit / Probe / Power Distribution Panel / Purge Motor Unit / Master Flange / Cables Min. Measuring Unit 0.1 ppm Accuracy < ±1% FS Span Drift (2 hours) < ±1% FS Repeatability < ±1% FS Probe Protector / Teflon Coated Probe ACU (Auto Calibration Unit) IP66 or NEMA 4X Regulator & Valve / Calibration Gas Response Time < 5 seconds Certificates Approvals Type Approval (Korea) TUV (Germany) CPA, CCEP (China) EAC, PAC (Russia) 01 Measures in...

Options DGA-X with ACU (Real Gas Calibration) Options DGA-X (Separated Control Unit) Other Specifications Measurement Conditions (Dperatmg _20 ~ +55 °C Probe Communication Analog Outputs Digital Outputs Digital Inputs Display & Input Device 2 Channel, 4 ~ 20 mA 4 Channel 2 Channel 7" LCD Monitor (Touch Screen) Materials Length Measurement Section Length Gas Flow Rate Weight Purge Motor Temperature Sensor Dimension & Power Supply Dimensions Weight Enclosure Rating Voltage Power Consumption Purge Motor Unit Dimensions Weight Voltage Power Consumption

Measurement Principles Differential Optical Absorption Spectroscopy (DOAS) Zero Drift (2 hours) < ±1% FS Span Drift (2 hours) < ±1% FS Response Time < 5 seconds System Components Main Unit / Probe / Junction Box / Purge System / Master Flange / Cables Features Options Purge Motor Unit (Air pump, Air filter, Air hose) 01 Explosion-proof model of the DGA-X 02 In-situ explosion-proof design reduces the need for a explosion-proof shelter, saving costs and minimizing space constraints 03 Measures in the low wavelength UV range (200400nm) for high precision and minimal moisture interference 04...

DGA-XPIn-SituTechnical Specifications Measured Components NOx, SO2, O2 Measurement Principles UV (NOx, SO2) / Zirconia (O2) Response Time < 5 seconds System Components Main Unit / Probe / Power Distribution Panel / Purge Motor Unit / Master Flange / Cables Probe Protector / Teflon Coated Probe IP66 or NEMA 4X (Panel) Regulator & Valve / Calibration Gas Gas Panel / ACU (Auto Calibration Unit) Features 01 Integrates DGA-X and GGA-70-1 to simultaneously measure NOx, SO2, and O2 02 NOx and SO2 measurements employ Ultraviolet Differential Optical Absorption Spectroscopy (UV DOAS), while O2 uses...

System Components RGA-60 I 5”In-SituTechnical SpecificationsMeasured Components CO Measurement Principles TDLS (Tunable Diode Laser Spectroscopy) Zero Drift (2 hours) < ±2% FSSpan Drift (2 hours) < ±2% FS Repeatability < ±2% FS Response Time < 5 seconds Main Unit / Probe / Power Distribution Panel / Purge Motor Unit / Master Flange / Cables Probe Protector / Teflon Coated Probe IP66 or NEMA 4X Regulator & Valve / Calibration Gas 01 Utilizes Tunable Diode Laser (TDL) technology to scan a narrow wavelength range, unaffected by gases other than CO 02 Semi-permanent use without light source...