| Detection factors | Simultaneous detection of 1-2 gases , including toxic gases, combustible gases, oxygen, carbon dioxide, VOCs, etc. , depending on the site environment and user requirements. | ||
| Detection range | It depends on the site environment and user needs. | ||
| resolution | 0.001ppm (0-10ppm high precision) / 0.01ppm (0~10 ppm); 0.01ppm (0~100 ppm), 0.1ppm (0~ 1000 ppm), 1ppm (0~ 1000 ppm and above); 0.1%LEL; 0.1 % and 0.01 % Vol | ||
| Unit display | Optional units: μmol/mol, ppm , ppb , mg/m3, μg /m3 , % Vol , %LEL | ||
| Detection principle | Electrochemical, catalytic combustion, infrared, thermal conductivity, semiconductor, PID photoionization, etc., depending on the measurement range, on-site environment, and user requirements. | ||
| Sensor lifespan | Electrochemical: 2-3 years; Catalytic combustion: 2-3 years; Infrared spectroscopy: 5-10 years; Thermal conductivity: 2-5 years; PID: 2-3 years | ||
| Detection method | diffusion | ||
| Display method | 2-inch LCD, optional: high-definition color screen | ||
| Display content | Real-time concentration, unit, gas name, alarm status , time, storage status , communication status , battery level, charging status, etc. | ||
| Detection accuracy | Typical accuracy: ≤ ± 3 % FS ( higher accuracy sensor optional ) | Uncertainty | ≤± 2 % |
| linearity | ≤± 3 % | Repeatability | ≤± 2 % |
| Response time | T90≤30 seconds ( general ) | Recovery time | ≤ 3 0 seconds ( general ) |
| working power supply | DC 7.4V | ||
| Battery capacity | 7.4V, 2000mAh ( 3.7V, 4000mAh) rechargeable polymer lithium battery , providing over 48 hours of battery life with real-time 4G, GPS/BeiDou positioning. | ||
| Alarm volume | Greater than 95dB at 30 cm; Greater than 90dB at 1 meter | ||
| Usage Environment | Temperature : -20 ºC to + 55 ºC , customizable to -40 ºC to +70ºC ; Relative Humidity: 10-95 % RH | ||
| Communication interface | Standard Type-C fast charging and communication interface, 4G wireless transmission | ||
| Data storage | Standard capacity exceeds 1 million records , supports local viewing, deletion, or data export, and storage interval can be set arbitrarily. | ||
| Interface language | Chinese , English, and other languages can be customized. | ||
| Explosion-proof rating | ExiaII CT4Ga | ||
| Protection level | IP68 (1.5 meters, 30 minutes) | ||
| Shell material | PC+TPE, high-strength, corrosion-resistant, and fire-retardant polycarbonate combined with an integrated TPE protective sleeve, drop-proof, wear-resistant, and anti-static, effectively resisting drops of ≥5 meters. | ||
| External dimensions | Maximum dimensions: 107*63*40 mm (L*W*H) housing size, excluding back clip thickness. | weight | Approximately 210 g |
| Standard Annex | Calibration cover, instruction manual, certificate of conformity, USB charger (including data cable), instrument packaging box | ||
| Optional features | GPS/BeiDou positioning, Bluetooth transmission, Wi-Fi transmission, LoRa transmission | ||
| Optional accessories | Instrument Safety Box | ||
The MS104K-S2 portable 2-in-1 gas detector is primarily used for the rapid and accurate detection of gas leaks or alarms for excessive gas concentrations. It contains 1-2 digital sensors, each plug-and-play and intelligently identifying gases. The main detection principles for gases include electrochemical, infrared, catalytic combustion, thermal conductivity, and PID photoionization . The MS104K-S2 achieves ultra-low power consumption for gas concentration measurement and wireless data transmission. Its compact and lightweight design allows for long battery life . It supports alarm record storage, historical data and alarm log viewing, GPS/BeiDou positioning, and other functions . It is widely used in fire fighting, emergency rescue, confined space applications, petroleum, chemical, metallurgical, refining, gas, warehousing, pharmaceutical, environmental protection, and air pollution control.