Beijing HiYi Technology Co., Ltd
Beijing HiYi Technology Co., Ltd
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HY-3500UV Online UV-DOAS Biogas Monitoring System
HY-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.
| Parameters | |||||
| Gas | Technology | Measurement Range | Resolution | Precision | Repeatability |
| H2S | UV-DOAS | 0-500~5000ppm | 1ppm | ±2%FS | ≤1% |
| CH4 | NDIR | 0-100% | 0.01% | ±2%FS | ≤1% |
| CO2 | NDIR | 0-50% | 0.01% | ±2%FS | ≤1% |
| O2 | 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 | ||||
| Communications | |||||
| 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 |
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Anaerobic Digester; H2S scrubber; Biogas Engine/CHP; Upgraded Bio-methane Gas; Landfill Site ;Waste Water Treatment; Biogas Flare