NFW-201 Series Industrial and Commercial Point-Type Combustible Gas Detector
The NFW-201 Series point-type combustible gas detector is designed for industrial and commercial gas safety applications. It combines high-performance sensing, microcontroller control, audible and visual alarms, and real-time concentration display for stable field monitoring.
Product Overview
▅ Product Features
1. Supports multiple interfaces and communication methods S-BUS, 4-20mA, FFBUS;
2. Infrared remote control control, no need to open the cover for on-site operation;
3. Three independent indicator lights indicate equipment normality/fault/alarm;
4. Comes with linkage control output, which can control on-site sound and light or fans/valves;
5. Double outlet structure, convenient for on-site construction;
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6. Built-in temperature detection function to ensure that the product detects accurately and effectively in various temperature environments;
7. Alarm self-diagnosis function;
8. The system has strong plasticity and supports a variety of interfaces and external expansions;
9. Independent sensor module, users can extend product life or conduct off-site calibration testing by simply replacing the sensor module as needed, avoiding the complexity of the disassembly process and the difficulty of on-site calibration, and truly realizing plug-and-play.
▅ Applicable scenarios
Petrochemicals, coking, steel, emergency rescue, gas, national defense, aviation, chemical industry, environmental protection, pharmaceuticals, papermaking, etc.
Performance Specifications
| Detect gas | Gas, liquid, steam, corrosive media |
| Detection principle | Catalytic combustion type |
| Sampling method | diffusion |
| Measuring range | (0～100)%LEL |
| Alarm set value | Low limit 25% LEL; high limit 50% LEL (factory default value for combustible gases) |
| Alarm error | ±3%F.S |
| response time | ≤30S |
| Working voltage | 24VDC/three-wire system |
| Protection level | IP66 |
| Explosion-proof level | Exd IIC T6Gb |
| Signal transmission method | S-BUS、4-20mA、FFBUS |
| Signal transmission distance | ≤1500 meters |
| Usage environment | Temperature: -40℃～+60℃; relative humidity ≤93%RH; pressure 86kPa～106 kPa |
| Linkage output | 3 channels of passive switching signals, contact capacity 3A/AC250V or 3A/DC30V |