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    Product Name KORNO GT903-F4（CO、H2S、O2、EX） Portable four-in-one Detector SMART SENSOR ST8900 Gas Detector
    Product Price In coming $241.00
    Details Details
    Model comparison
    Usage Type Portable Portable
    Gas Quantity Multi-gas Multi-gas
    Sensor Principle Electrochemical Catalytic Bead Electrochemical Catalytic Bead
    Sampling Method Pumped Diffusion
    Detection gas Ex O₂ CO H₂S Ex O₂ CO H₂S
    T90 Response Time ≤20s ≤10s
    Explosion-proof Ex ia (IS)
    IP Rating IP65
    Data Output
    Parameter comparison
    Detect gas Simultaneous detection: H2S, CO, O2, EX gas, H2S (High Performance Japanese Basic Sensor), CO (High Accuracy Japanese Basic Sensor), EX (Imported Japanese Basic Catalytic combustion Sensor), O2 (Swiss MEMBRAPOR Imported Sensor) Oxygen/carbon monoxide/hydrogen sulfide/combustible gas
    Range EX Range 0-100% LEL, H2S Range 0-100ppm, CO Range 0-1000ppm, O2 Range 0-30% VOL
    resolution EX：0.01%LEL、H2S：0.01ppm、CO：0.1ppm、O2：0.01%VOL
    temperature and humidity Optional accessories, temperature detection Range: -40~ 120 ℃, humidity detection Range: 0-100% RH
    Sampling method Pump suction Type, built-in powerful air pump, flow rate: 100-1000mL/min adjustable, can work in a micro negative pressure environment
    detection accuracy ≤±3%
    Linearity ≤±1%
    Response Time T90≤20s Moment
    recovery time ≤ 20 seconds
    Repeatability ≤±1%
    Zero drift ≤ +/- 1% (F. S/year)
    detection mode Real-time detection, timing detection can be set
    storage mode Real-time storage and timed storage can be set; 30,800 groups of data can be stored in a single channel, and historical data can be viewed on the screen
    Explosion-proof sign Ex ia IIC T4 Ga
    shell material ABS+PC
    Protection Rating IP65
    Operating environment temperature -30 ~ 60℃
    Operating humidity ≤ 95% RH, non-condensing
    Working power supply 4000mA rechargeable polymer battery
    working pressure -30Kpa ~ 200Kpa
    Dimension 180*85*55mm
    weight 0.5 Kg (Net weight) 360g
    execution standard GB3836.1-2010 "Explosive environments - Part 1: Equipment - General requirements", GB3836.4-2010 "Explosive environments - Part 4: Equipment protected by intrinsically safe" i "