CH4 Methane Preprocessing Online Monitoring System
Model: HNAG1000-CH4
Detection: CH4
Detection Principle: Catalytic combustion, infrared NDIR
Detection range: 0-100%LEL, 0-5%Vol, 0-100%VOL
Product Description
High-Precision CH4 Preprocessing Online Monitoring System
The Preprocessing Online Monitoring System HNAG1000 is engineered for real-time and precise methane (CH4) concentration detection and leakage monitoring. Incorporating imported catalytic combustion and infrared NDIR sensors, this advanced system delivers fast response speeds, high measurement accuracy, and excellent stability. Designed with an explosion-proof wiring method, it is fully compatible with PLCs, DCS, and other control systems for seamless industrial integration.
Robust Stainless Steel Design & Core Functions
Housed in a durable stainless steel enclosure, this system thrives in harsh conditions. The operational process is highly efficient: the sampled CH4 gas first passes through a filter to remove dust and impurities. It is then pumped by a sampling pump to a flowmeter, which strictly controls the gas flow rate between 0.3 and 0.5L/Min, ensuring optimal sensor performance before it reaches the detector.
Comprehensive Technical Parameters
| Feature | Specification |
| Output Signal |
4-20mA, RS485, Voltage signal (0.4-2V, 0-5V, 0-10V), Relay switch |
| Wireless Output |
GPRS, 4G, WIFI, LORA, ZigBee (Optional) |
| Sampling Accuracy |
±3%F.S |
| Response Time |
T90<10S |
| Working Temperature |
-20 ～ 50℃ |
| Sampling Distance |
Up to 80 meters (Recommended within 20 meters) |
Versatile Application Scenarios
This CH4 monitoring system is widely deployed across diverse hazardous sectors. Key application scenarios include petroleum and petrochemical facilities, chemical plants, coal mines, thermal power plants, underground gas pipeline maintenance, and industrial gas process control.
Flexible Installation & Configurations
Whether you require monitoring in normal temperature dry environments or demanding 400-800°C high-temperature, high-humidity, and dusty environments, we offer tailored internal configurations featuring electronic condensers, time relays for pipeline reverse-purging, and robust pneumatic pumps.
Frequently Asked Questions (FAQ)
Q: What is the expected service life of the CH4 sensor?
A: The sensor is a consumable component with a service life of approximately 1 to 3 years, depending entirely on the specific detection environment.
Q: How do I know when to replace the filter?
A: You should replace the filter when the color of the internal chip changes. The approximate lifespan of the filter is about 3 months, based on the testing environment.
Q: How does the system handle alarms?
A: The standard configuration includes a two-level alarm (three-level optional), supporting on-site sound and light alarms, remote controller alarms, and computer data acquisition software alarms.
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