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DoraHello, I already used the equipment in an aluminum smelting plant in Mexico and I was surprised by the function of your company's laser device.
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SylviaGood gas leak detection instrument !!! High accurate test values :D
Zetron Ms104K-M Portable Measurement Device High Precision Detection CO O2 H2S And LEL

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xProduct Name | Protable Single Gas Detector | Model Number | MS104K-M |
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Type | Biogas Analyzer | Detecting Gas | CO, CO2, O2, H2S,EX |
Display Mode | 1.7inch LCD | Sensor Type | Electrochemical Sensor,IR Sensor And Etc |
Unit | Ppm, Mg/m3, LEL,VOL | Detection Range | 0-100ppm,0-100%LEL,0-100%VOL,depending Onrequirement |
Sampling Type | Diffusion | Size | 90x70x38mm(L X W X H) |
Weight | 380g | ||
Highlight | Portable 4 gas detector,4 gas detector Measurement Device,High Precision Detection 4 gas detector |
MS104K Portable 4-in-1 Multi Diffusion Type Gas Detector
Developed for quick and precise gas leak detection, the MS104K-M portable four-in-one gas detector alerts users when gas concentrations exceed established safety limits. It features multiple detection principles, including electrochemical technology, infrared sensing, catalytic combustion, thermal conductivity, and photoionization detection (PID). The detector is widely applied in industries like firefighting, emergency response, confined space monitoring, petroleum and chemical production, mining, metallurgy, refining, gas distribution, warehousing, healthcare, environmental management, and air quality control.
- Could test any 1 to 4 gases in one equipment
- Diffusion/pumping measurement, the external pump is connected to the instrumentin an integrated type
- With felldown alarm
- With computer software for data transfer and analysise
- With different probes for multi-applications

Detection factor | 1-4 gases (carbon monoxide CO, hydrogen sulfide H2S, oxygen O2, combustible gas Ex, CO2 CO2, VOC, etc.), Depending on the site environment and user needs |
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Scope of detection | Depending on the site environment and user needs | ||
resolution ratio | 0.001ppm (0-10ppm high precision) / 0.01ppm (0-10 ppm);0.01ppm (0-100 ppm),0.1ppm (0-1000 ppm), 1ppm (0-5000 ppm); 0.1% LEL; 0.01%Vol | ||
Unit display | Option: umol / mol, ppm, mg/m3, VOL%, LEL% | ||
Detection principle | Electrochemistry, catalytic combustion, infrared, thermal conductivity, semiconductor, PID photoions, etc., according to the range, field environment and user needs | ||
Sensor life | 2 - 3 years for electrochemical chemistry, 2 - 3 years for catalytic combustion, 5 years for infrared, 2 - 5 years for thermal conductivity, and 2 years for PID | ||
detection mode | Diffusion type / pump suction type, standard equipment: external pump, pump plug alarm function | ||
display mode | LCD | ||
Display content | Real-time concentration, alarm, time, storage, communication state, electric quantity, charging state, concentration unit, gas molecular formula, etc | ||
Detection accuracy | Typical accuracy: ± 3% FS (optional higher precision sensor) | uncertainty | ≤±2% |
degree of linearity | ≤±3% | repetitiveness | ≤±2% |
response time | T9020 seconds (GM) | recovery time | 30 seconds (GM) |
working power supply | DC 7.4V | ||
battery capacity | 7.4V, 1400 mAH rechargeable polymer battery, with over charge, over discharge, over voltage, short circuit, overheat protection functions | ||
stand-by time | Over 100 hours (no catalytic sensor) | ||
The alarm volume | Buzzer 85dB (1 m distance) | ||
service environment | Temperature: -20ºC ~ + 60ºC, it can be customized-40ºC ~ + 70ºC; Relative humidity: 10-95% RH | ||
communication interface | Standard Type-C fast charging and communication, with a seat charging base | ||
data storage | Standard capacity 100,000; support local view, delete or data export, storage time interval set | ||
Interface language | Chinese or English can be set, the default Chinese interface | ||
Explosion-proof type | Intrinsically safe type ExiaCT4Ga | ||
levels of protection | IP68 | ||
Case material | High strength corrosion resistance, fire proof polycarbonate, integral glue, anti-fall wear resistance anti-static, effective drop resistance of 5 meters | ||
External size | Maximum size: 907038mm (LWH) | weight | 200g |
standard accessory | Manual, qualification certificate, USB charger (including data line), instrument box, external pump, filter 1. | ||
Optional function | Temperature detection: -40ºC ~ + 70ºC precision 0.5ºC; humidity detection: 0-100% RH precision 3% RH Wireless data transmission: LORA, Bluetooth, SOS, one-click call for help.(4G?) External micro-powered wireless Bluetooth printer. |
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Optional attachment | Multiple filters |



