NFW-201-X(A) Series Industrial and Commercial Point-Type Combustible Gas Detector
The NFW-201-X(A) Series point-type combustible gas detector supports the S-BUS communication protocol and flexible 2-wire/3-wire networking through compatible controllers. Independent three-color indicators clearly show normal, fault and alarm states.
Product Overview
▅ Product Features
1. S-BUS bus communication;
2. Connecting to the corresponding controller can realize 2-wire/3-wire communication;
3. Three independent indicator lights indicate normal/fault/alarm of the equipment;
4. Automatic zero tracking , Sensitivity tracking, can automatically adapt to complex environmental changes, and maintain high alarm sensitivity;
5. Built-in temperature detection function to ensure accurate and efficient detection of products in various temperature environments;
6. Infrared remote control control, no need to open the cover for on-site operation
▅ Applicable scenarios
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Petrochemical industry, coking, steel, emergency rescue, gas, national defense, aviation, chemical industry, environmental protection, pharmaceuticals, papermaking, etc.
Performance Specifications
| Detect gas | Combustible gas (methane/propane) |
| 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 |
| 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 |