Portable Single Gas Detector
The SN-MS104K-S1 is an ultra-low power diffusion-type single gas detector designed for long-term continuous gas leak detection and over-limit alarm, featuring maintenance-free operation with a 1–2 year battery life.
Key Features
Ultra-low power design with 1650mAh battery
Maintenance-free operation for 1–2 years
Diffusion-type gas detection
Intrinsically safe design, Ex ia IIC T4 Ga certified
Fire-resistant, anti-static, anti-EMI design
1.5-inch LCD backlit display
Three-button easy operation
Multiple unit options: umol/mol, ppm, mg/m³, %Vol, %LEL
Data storage supported
Man-down alarm function
Factory reset & data recovery
Alarm types: sound, light & vibration
Alarm categories: gas concentration, low voltage, fault
Alarm modes: low/high/interval/TWA
Misoperation prevention
Automatic zero tracking
Multi-point calibration
Infrared communication (optional docking station required)
Protection rating IP66
Technical Specifications
| Item | Specification |
| Gas Type | Single gas (CO, H₂S, O₂, combustible gas, CO₂, etc.) |
| Detection Principle | Electrochemical, low-power infrared |
| Measuring Range | 0–1/10/100/1000/5000ppm; 100%LEL; 20%/50%/100%Vol (customizable) |
| Accuracy | ≤±3% F.S |
| Linearity | ≤±3% |
| Repeatability | ≤±2% |
| Uncertainty | ≤±2% |
| Response Time | T90 ≤30s |
| Recovery Time | ≤30s |
| Operating Temp | -20°C to +55°C |
| Humidity | 10–95%RH (non-condensing) |
| Power Supply | 3.6VDC, 1650mAh battery |
| Operating Time | 1–2 years |
| Display | 1.5-inch LCD |
| Sampling Method | Diffusion |
| Alarm | Sound, light & vibration |
| Communication | Infrared (optional dock) |
| Data Storage | Supported |
| Protection | IP66 |
| Explosion-proof | Ex ia IIC T4 Ga |
| Dimensions | 87×63×32mm |
| Weight | Approx. 120g |
Applications
Firefighting
Emergency Rescue
Confined Space Entry
Oil & Gas
Petrochemical & Refining
Gas Utilities
Warehousing
Pharmaceutical Industry
