• Beijing Zetron Technology Co., Ltd
    Hello, I already used the equipment in an aluminum smelting plant in Mexico and I was surprised by the function of your company's laser device.
  • Beijing Zetron Technology Co., Ltd
    Good gas leak detection instrument !!! High accurate test values :D
Contact Person : Lisa Niu
Phone Number : +86 15699785629
Whatsapp : +8615699785629

DOAS Gas Spectrometer Vertical Type On Line Differential UV VOCs Tail Emission

Place of Origin China
Brand Name Zetron
Certification CE
Model Number DOAS-3000
Minimum Order Quantity 1 piece
Packaging Details paper carton
Payment Terms L/C, D/A, D/P, T/T, Western Union, MoneyGram

Contact me for free samples and coupons.

Whatsapp:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

If you have any concern, we provide 24-hour online help.

Product Details
Product Name Online Pollution Source Monitoring System Detection Gas NO、NO2、SO2、NH3、H2S、O3 And Other Gases
Detection Principle PID Light Ion, Other Gas Monitoring Analysis Optional Electrochemical, Infrared (NDIR), Laser (TDLAS), Differential Ultraviolet Spectroscopy (DOAS) And Other Principles Sampling Temperature -40 ℃~800℃(standard), Optional: -40 ℃~1300℃, -40 ℃~2000℃
Sampling Humidity 0~99%RH Sampling Distance Standard 70 Meters
Operating Voltage 220VAC, 50Hz Dimensions 1800mm*800mm*450mm
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tail emission gas spectrometer

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Product Description

TH3000 VOCs Online Pollution Source Monitoring System




DOAS-3000 online differential UV spectrometer is used for various high temperature and high humidity or high dust occasions, with an optional automatic blowback system, otherwise, it needs manual maintenance and cleaning of dust filters. The whole sampling pipeline has an electric heat insulation function, which is conducive to removing water vapor and preventing part of the gas from dissolving in condensate to improve the accuracy of detection and analysis, and the built-in double-stage high-efficiency condensation and dehumidification system can control the dew point of gas stably at 4℃ or 5℃ to meet the humidity control requirements of gas for various principles of analytical instruments.


Detection parameters: NO, NO2, SO2, NH3, H2S, O3, benzene, toluene, xylene, etc.

Can also be optional Pitot tube detection flue wind speed, temperature, pressure, flow, but also optional

detection of wind speed, wind direction, rainfall, atmospheric pressure and other meteorological parameters.

Measuring range: 0-2, 10, 20, 50, 100, 500, 1000, 2000ppm, other ranges can be customized.

other ranges can be customized.

Detection principle: UV differential absorption spectrometry (DOAS).

Sampling temperature: - 40℃ ~800℃ (standard), optional: - 40℃ ~1300℃, -

40℃ ~2000℃, higher temperature detection analysis to be customized.

Sampling humidity: 0 ~ 99% RH.

Host working environment: - 40℃ ~70℃, ≤ 95%RH.

Working mode: on-line continuous work, pump suction and extraction sampling.

Sampling distance: standard 30 ~ 40 m, optional vacuum pump sampling distance of more than 70 m.

Sampling flow: adjustable, 4 l/min (standard), 10 l/min, optional.

Operating voltage: 220VAC, 50HZ.

Output signal: 4~20mA, RS485, multi-way passive contact, optional: wireless transmission, network transmission.

network transmission.

Protection level: IP66 outdoor waterproof type, optional explosion-proof type.

Display mode: standard product is no window display, optional 9-inch touch color display.

Printing mode: no printing function, optional wireless Bluetooth printer for printing.

Alarm mode: optional integrated sound and light alarm, external type.



★ Explosion-proof, waterproof design, protection level IP66, outdoor type, fast, reliable, and stable detection.

★ Built-in high-efficiency dual-stage condensation and dehumidification and dust removal pre-treatment system, integrated design of automatic control, effectively reducing SO2 loss and preventing water vapor interference, more suitable for working conditions with high humidity and low concentration of flue gas components.

★ Adopting differential absorption spectroscopy (DOAS) technology, with small temperature drift and high measurement accuracy, which can measure ultra-low concentration.

★ Long-life pulsed xenon lamp cold light source, short warm-up time, and long service life.

★ Built-in long light range gas cell, NOx, SO2 analysis dual range design, according to the concentration value automatically switch range control.

★ In real-time display of the concentration curve of each flue gas component, the curve display ratio can be adjusted.

★ Low lower detection limit, not affected by moisture and dust, strong anti-interference ability, can avoid cross-interference between gases.

★ Built-in heating device, automatic start of heating function at low temperature, so that the analyzer can be used in cold areas.

★ Android operating system, supporting Chinese and English input, which is convenient for users to input information such as sampling locations and achieve good human-computer interaction.

★ Industrial high-speed embedded IPC with accurate and fast control.

★ Design and development of microcomputer database and communication system software under windows environment, to realize microcomputer communication for storage and printing.

★ equipped with the rich human-machine interface, supporting mouse, U disk, keyboard, touchpad, printer and other devices.

★ Fault self-test function, generating fault reports after detection, which is convenient for user maintenance.

★ Integrated micro thermal printer or external Bluetooth wireless printer.

★ flue gas conversion to the benchmark oxygen content conversion and conversion coefficient conversion of two ways.

★ Large capacity data storage, 16G, can create folders by day to store the daily test data separately.

★ Optional automatic blowback system.

★ Standard sampling distance of 30~40 meters, optional vacuum pump with a maximum sampling distance of over 70 meters.

★ Can detect and analyze the flue gas temperature within 2000℃.




 DOAS-3000 online differential UV spectrometer is mainly used in the gas analysis industry, the main detection occasions: flue gas emission, desulfurization, and denitrification, boiler exhaust gas, VOCs tail gas emission, sewage pipe gas detection, and analysis, etc.



Q: What is your terms of payment?
A: We accept trade assurance, western union, visa master card, and tt.
Trade assurance can protect you, when you confirm the product then the money into my account.

Q: When do you reply to messages?
A: We will reply to your inquiry in 24 hours.

Q: What is the warranty for your product?
A: Warranty: 12 months, Lifetime maintenance

Q: When do you send the products? And how do you send it?
A: For the small order, we will send out the goods within 5 days, If have stock, we will send it immediately.
We send them by ups, FedEx, TNT, or DHL. For big order, normal is 20 days will finish.

Q: Do you accept OEM or revised logo, color, model, size?
A: Yes, we accept OEM for the qualified buyer. We can make the products according to customer personal requirements.

Q: How about the quality of the management?
A: We have a complete quality control system, all of our products will be fully pre-inspection by QC departments before shipping to you. We have the certification of ISO, CE we could send the certification test of our company to you.

Q: How about your after-sale service?
A: After sending, we will track the products for you, until you get the products.
When you got the goods, test them, and give me feedback.
If you have any questions about the problem, contact us, we will offer the solve way for you.