• 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

Flexible Online UV DOAS Biogas Monitoring System 500ppm ~ 5000ppm

Place of Origin China
Brand Name Zetron
Certification CE, ISO13485, ISO9001
Model Number Gasboard-3500UV
Minimum Order Quantity 1
Delivery Time 3-7 days
Payment Terms T/T, D/A, L/C, D/P, Western Union, MoneyGram
Supply Ability 1000 set/month

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
Measurement Component CH4, CO2, O2, H2S Response Time T90<60s
Power Supply AC220V, 50Hz IP Grade IP65
Size H1600 X W700 X D600 Weight 140kg
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UV DOAS Biogas Monitoring System


5000ppm Biogas Monitoring System

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Product Description

Portable Infrared Biogas Analyzer



Gasboard-3500UV is the new generation biogas monitoring system that primarily designed based on UV-DOAS technology to measure H2S concentration precisely before and after H2S scrubber, and extended with modular sensor of CH4 (NDIR), CO2(NDIR) and O2 (ECD) to realize online continuously monitoring of biogas quality without purging cycle required.
The 2 sampling channels design before and after scrubber enable it to provide an ideal solution to guarantee the H2S scrubber efficiency, protect downstream expensive equipment from the damage of overload H2S, minimized the investment for users and optimized the biogas monitoring process.




• Unique technology of UV-DOAS, NDIR and ECD combination.
• High & low range H2S measurement, switchable for points before and after scrubber.
• UV-DOAS H2S sensor with higher precision and longer lifespan.
• Continuous monitoring on CH4, CO2, H2S, O2 for optimized process control.
• Modular sensor design enables easy calibration and maintenance.
• Flexible gas conditioning configuration customizable to site requirements.
• Stainless steel protective cabinet to avoid corrosion in long term operation.
• Optional Ex-proof design applicable to safe or hazardous area.




Gas Technology Measurement Range Resolution Precision Repeatability
H2S UV-DOAS 0-500~5000ppm 1ppm ±2%FS ≤1%
CH 4 NDIR 0-100% 0.01% ±2%FS ≤1%
CO2 NDIR 0-50% 0.01% ±2%FS ≤1%
About 2 ECD 0-25% 0.01% ±2%FS ≤1%
Response Time T90<60s
Gas Flow (0.7~1.2)L/min for measurement
Gas Pressure (2~50)kPa for measurement
Power Supply AC220V, 50Hz
Sample Gas Preparation
Water Remover Gravity dewatering tank with manual draining valve (Default)
Filter Gas/water separator with auto-draining valve (Default)
Sampling Channels 1-4 sampling channels customizable (Optional)
Heated Line Heated line for ambient temperature under 0°C (Optional)
Sampling Pump Sampling pump for low pressure condition (Optional)
Gas Cooler Vortex gas cooler for high humidity sample gas (Optional)
Mechanical Specifications
Enclosure Stainless Steel floor standing cabinet
Dimensions(mm) H1600 x W700 x D600
Ex-Proof Grade ExdIICT6(Analyzer)
IP Grade IP65
Weight 140kg
Analog 4-20mA output channel for each gas reading
Digital RS232/485 output with Modbus protocol
Alarms High & Low alarm relay output for each gas reading
Environment Conditions
Operating Temperature(°C) -15 ° C to + 45
Operating Humidity 0-95%RH non-condensing
Environment Pressure 80-120kPa




Anaerobic Digester
H2S scrubber
Biogas Engine/CHP
Upgraded Bio-methane Gas
Landfill Site
Waste Water Treatment
Biogas Flare




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 you for 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 with 5 days,If have stock ,we will send 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 qualify buyer.We can make the products according to customer personal requirement.

Q: How about the quality of the managements ?
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 a feedback.
If you have any questions about the problem, contact with us, we will offer the solve way for you.