The Eranntex DOAS-3000-SO2 Online Differential Ultraviolet Spectrometer collects on-site flue gas or the gas being measured. The pretreatment unit filters dust, cools the gas, applies electric heating insulation, and performs two-stage high-efficiency dehumidification. The temperature, humidity, and dust particles of the measured gas are controlled within a specific range to achieve the required cleanliness level for the analyzer. The gas is then sent to the gas analysis unit for detection and analysis. The measured gas concentration is displayed in real time on the display screen, and the data signal is transmitted to a terminal such as a PLC or computer. Alternatively, it can be transmitted to a cloud server via wireless GPRS or the Internet. Users can then access the data from the server, enabling global network monitoring and analysis. The entire process is automated, requiring no human intervention.
The Eranntex DOAS-3000-SO2 Online Differential Ultraviolet Spectrometer is designed for use in high-temperature, high-humidity, or high-dust environments. An optional automatic backflush system is available, but manual dust filter cleaning is otherwise required. The entire sampling line features electric heating and insulation, which not only removes moisture but also prevents some gases from dissolving in condensed water, improving analysis accuracy. A built-in, high-efficiency, two-stage condensation dehumidification system maintains a stable dew point of 4°C or 5°C, meeting the humidity control requirements of various analytical instruments.
"Flue Gas Analyzer" JJG 968-2002
"Technical Specifications for Stationary Source Exhaust Gas Monitoring" HJ/T 397-2007
"Technical Requirements and Test Methods for Multi-Gas Measurement Systems by Ultraviolet Absorption" DB37/T 2641-2015
"Determination of Nitrogen Oxides in Exhaust Gases from Stationary Pollution Sources - Ultraviolet Absorption Method" DB37/T 2704-2015
"Determination of Sulfur Dioxide in Exhaust Gases from Stationary Pollution Sources - Ultraviolet Absorption Method" DB37/T 2705-2015
Explosion-proof and waterproof design, IP66 protection rating, outdoor-grade design, fast, reliable, and stable detection. Built-in high-efficiency two-stage condensation dehumidification and dust removal pretreatment system with integrated automatic control design effectively reduces SO2 loss and prevents water vapor interference, making it ideal for working conditions with high humidity and low flue gas concentrations. Utilizing Differential Optical Absorption Spectroscopy (DOAS), it minimizes temperature drift, provides high measurement accuracy, and can measure ultra-low concentrations. Automatically identifies the type and concentration of the gas being measured. Common gases include NO, NO2, SO2, NH3, SO2, O3, benzene, toluene, and xylene. A long-life pulsed xenon cold light source provides a short warm-up time and a long service life. Built-in long Optical path gas cell, dual-range design for NOx and SO2 analysis, with automatic range switching based on concentration. Real-time display of flue gas component concentration curves, with adjustable scale. Automatic and manual measurement modes are available, with adjustable single measurement time and number of measurements in automatic mode. Low detection limit, unaffected by moisture and dust, and strong anti-interference capabilities prevent cross-interference between gases. A built-in heater automatically activates at low temperatures, allowing the analyzer to be used in extremely cold regions. Automatic zero and calibration functions are also available. A large, multi-angle flip-up TFT color display with a wide operating temperature range is also available. Color screen display
Linux operating system supports Chinese and English input, allowing users to easily enter information such as sampling locations, ensuring excellent human-computer interaction
High-speed industrial embedded computer provides precise control and fast speed
Design and development of microcomputer database and communication system software for Windows environments, enabling microcomputer communication for storage and printing
Comprehensive human-computer interface support, including mouse, USB flash drive, keyboard, touchpad, and printer
The dust-proof and waterproof industrial keyboard is precision-designed for rugged operation and easy operation
Fault self-diagnosis generates fault reports for easy maintenance
Integrated micro thermal printer or external Bluetooth wireless printer
Flue gas conversion uses baseline oxygen content and a conversion factor
Large-capacity 16GB data storage allows for daily data storage in folders
Optional automatic backflush system
Standard sampling distance is 30-40 meters, with an optional vacuum pump for a maximum sampling distance of over 70 meters
Flue gas temperature analysis up to 2000°C
Dimensions: 1800mm high * 800mm wide * 450mm deep
The sample gas is processed according to the analyzer's acceptable pressure, temperature, humidity, flow rate, dust content, and cleanliness.
The Eranntex DOAS-3000-SO2 Online Differential Ultraviolet Spectrometer performs the following tasks:
Sample Collection: A vacuum sampling pump or a brushless DC pump extracts sample gas from a flue or other environment.
Dust Filtration: The measured gas passes through a precision dust filter before entering the sampling line. An optional automatic backflush system is required for high-dust environments.
Cooling: The sampling probe and sampling line provide cooling, capable of processing gases up to 2000°C.
Heating: Heats and insulates the sample to prevent condensation and the dissolution of some gases.
Dehumidification: A two-stage, high-efficiency condensation dehumidification system maintains a stable dew point of 4°C or 5°C.
Tar Treatment Processing: Sample gas passes through a tar filter to remove tar and residual dust. Gas-water separation: After cooling the sample gas through the sampling pipeline, free water is generated. The gas-water separator separates the gas, water, and residual dust, and automatically drains the sample. Secondary filtration: Optional equipment is provided based on on-site humidity levels to perform secondary water vapor separation. Detection and Analysis: Real-time concentration detection and display are performed, and data is transmitted via 4-20mA/RS485 signals, wireless transmission, or network transmission to a remote server, environmental protection bureau, or monitoring station. Flow Control: Controls the gas intake. Gas Switching: Switches between the measured gas, standard gas, or air.
System Components: Sampling Unit, Sample Gas Pretreatment Unit, Gas Analysis Unit
Detection Parameter: SO2. An optional Pitot tube can be used to monitor flue gas velocity, temperature, pressure, and flow rate. Optional measurements include wind speed, wind direction, rainfall, atmospheric pressure, and other meteorological parameters.
Measuring Range: 0-10% vol, other ranges available on request.
Detection Principle: Differential Ultraviolet Absorption Spectroscopy (DOAS)
Sampling Temperature: -40°C to 800°C (standard), Optional: -40°C to 1300°C, -40°C to 2000°C. Higher temperature analysis is available on request.
Sampling Humidity: 0-99% RH
Operating Environment: - 40°C~70°C, ≤95% RH
Operating Mode: Online continuous operation, pump-based sampling
Sampling Distance: Standard 30-40 meters, sampling distance greater than 70 meters with optional vacuum pump
Sampling Flow Rate: Adjustable, 4 L/min (standard), 10 L/min (optional)
Operating Voltage: 220VAC, 50Hz
Output Signal: 4-20mA, RS485, multi-channel passive contact, options: wireless transmission, network transmission
Protection Rating: IP66, outdoor waterproof, explosion-proof version available
Display: Standard display without window, optional 9-inch color touchscreen display
Printing: No printing function, optional wireless Bluetooth printer
Alarm: Optional integrated external audible and visual alarm
The Eranntex DOAS-3000-SO2 Online Differential Ultraviolet Spectrometer Installation/Connection:Combination Diagram
Malaysia
