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    Portable Combustible Gas Detector, 0 to 100%LEL

    5 out of 5 based on 5 reviews | Write a review
    Favorable price combustible gas detector, 0 to 100% LEL, with sound, light and vibration alarm, easy to use and convenient to carry around, high accuracy and reliability, best portable gas monitor for detecting the flammable gas.
    SKU: GD200-LEL
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days


    • LCD dot matrix display, direct readout of gas type, unit, concentration, local time, etc.
    • Support English/Chinese operation, easy to shift.
    • Gas concentration unit PPM and mg/m3 can be shift quickly.
    • Built-in micro-sampling pump, 10 grades of suction are available.
    • Explosion-proof certification


    • With self-calibration and zero calibration functions, makes the detection more accurate and reliable.
    • One key to restore factory setting, free from maloperation.
    • With temperature and pressure compensation, able to realize the compensation for the gas concentration under different temperature and pressure environments.
    • Two-stage alarm with sound and light, and alarm point is settable.
    • Rechargeable lithiumpolymer battery with large capacity.
    • High-strength special engineering plastic housing, with anti-slip, waterproof, dustproof and explosion-proof.


    Model GD200-LEL
    Sampling Method Pumping suction, flow rate can be up to 750ml/min
    Detection Principle Catalytic combustion
    Gas Combustible/Flammable Gas
    Range (Optional) 0 to 100%LEL
    Resolution 1%LEL
    Accuracy ≤±3% F.S.
    Responce Time ≤10s
    Repeatability ≤±1%
    Recovery Time ≤10s
    Linearity Error ≤±1%
    Zero Shift ≤±1% (F.S./year)
    Data Logging (Optional Function) High speed data transmission by USB, available for data downloading and printing (The built-in IC card has about 2G memory, which can record 100,000 sets of data.)
    Alarms Sound, light and vibration
    Display LCD dot matrix display
    Language Chinese/English
    Battery 3.7V rechargeable lithium battery, 3.7 Watt
    (Charger included: Input AC 100-240V 50/60Hz with optional USA, Europe or UK plug)
    Operating Time 100h (Pump off)
    Communication Mini USB interface supports standard MODBUS communication protocol
    Explosion-proof Grade Ex ia llC T4 Gb
    Case Material ABS+PC
    Protection Grade IP66
    Certification CE, ATEX
    Operating Temperature -20℃~50℃
    Operating Humidity 0~95%RH (non-condensing)
    Operating Pressure 0.8~1.2bar
    Dimension 205*75*32mm
    Weight 300g
    Extension Probe About 480mm (Total Length), About 300mm (Probe Head)

    Note: We also provide other common gas detectors, and you can refer to ATO Gas Detector Catalog to get the specific gas type and measurement range. If you have any questions, please feel free to contact us.

    *** Other Common Gases and Ranges Available for Portable Gas Detectors

    Gas Type Measure Range Resolution
    Ammonia (NH3) 0-10/20/50/100/200/500/1000/2000/5000ppm 0.01ppm/0.1ppm/1ppm
    Benzene (C6H6) 0-1/5/10/20/50/100/200/500/1000/2000/5000ppm 0.001ppm/0.01ppm/0.1ppm/1ppm
    Carbon Dioxide (CO2) 0-1000/2000/5000/10000/20000/50000 ppm, 0-10%/20%/30%/50%/100%VOL 1ppm, 0.01%VOL
    Carbon Monoxide (CO) 0-10/20/50/100/500/1000/2000ppm 0.001ppm/0.01ppm/1ppm
    Chlorine (Cl2) 0-5/10/20/50/100/200ppm 0.001ppm/0.01ppm/0.1ppm
    Chlorine Dioxide (ClO2) 0-10/20/50/100ppm 0.001ppm/0.01ppm/0.1ppm
    Ethylene (C2H4) 0-10/20/50/100/500/1000/2000ppm 0.001ppm/0.01ppm/0.1ppm/1ppm
    Flammable 0-100%LEL 1%LEL
    Formaldehyde (CH2O) 0-10/20/50/100/500/1000ppm 0.01ppm/0.1ppm/1ppm
    HC 0-100%LEL 1%LEL
    Hydrogen (H2) 0-10/20/100/500/1000/2000/5000ppm, 0-1%/2%/4%VOL 0.001ppm/0.01ppm/1ppm, 0.001%VOL
    Hydrogen Chloride (HCL) 0-10/20/50/100/200/500/1000/2000ppm 0.01ppm/0.1ppm/1ppm
    Hydrogen Cyanide (HCN) 0-10/20/50/100ppm 0.01ppm/0.1ppm
    Hydrogen Fluoride (HF) 0-1/5/10/50ppm 0.001ppm/0.01ppm
    Hydrogen Sulfide (H2S) 0-5/10/20/50/100/200/500/1000/2000ppm 0.001ppm/0.01ppm/0.1ppm/1ppm
    Methane (CH4) 0-100%LEL, 0-50%/100%VOL 1%LEL, 0.01%VOL
    Methyl Bromide (CH3Br) 0-1/10/20/50/100/200ppm 0.01ppm/0.1ppm/1ppm
    Nitric Oxide (NO) 0-20/50/100/250/500/1000ppm 0.01ppm/0.1ppm/1ppm
    Nitrogen (N2) 0-100% VOL 0.01%VOL
    Nitrogen Dioxide (NO2) 0-20/50/100/500/1000ppm 0.01ppm/0.1ppm/1ppm
    Oxygen (O2) 0-25%/30%/100%VOL 0.01%VOL
    Ozone (O3) 0-5/10/20/50/100/200/500/1000/2000ppm 0.001ppm/0.01ppm/0.1ppm/1ppm
    Phosgene (COCl2) 0-1/5/10ppm 0.001ppm
    Phosphine (PH3) 0-10/20/50/100/500/1000/2000/3000ppm 0.01ppm/0.1ppm/1ppm
    Sulfur Dioxide (SO2) 0-20/50/100/500/1000ppm 0.01ppm/0.1ppm/1ppm
    Sulfur Hexafluoride (SF6) 0-1000/2000/3000ppm 1ppm
    Volatile Organic Compounds (VOC) 0-1/5/10/20/50/100/200/500/1000/2000/5000ppm 0.001ppm/0.01ppm/0.1ppm/1ppm


    Portable Combustible Gas Detector Details


    Portable flammable gas detector is suitable for monitoring combustible gas in the restricted space, gas pipeline, gas station, spraying workshop and other flammable and explosive gas storage areas.
    Combustible Gas Detector ApplicationsTips: Combustible Gas Detector Working Principle

    Combustible gas detectors are used to monitor single or multiple combustible gas concentrations. Combustible gas detectors mainly have two types based on the principle, catalytic type and infrared optical type. The infrared type combustible gas detector is mainly used in the places using gas, natural gas, liquefied gas like the restaurants, hotels, family production rooms and so on, while the industrial sites emitting combustible gases and combustible vapors mainly use catalytic combustible gas detectors.

    The Catalytic combustible gas detector is used to measure the concentration of combustible gas by the change of resistance of refractory platinum wire after heating. When the combustible gas enters the detector, it causes an oxidation reaction (flameless combustion) on the surface of the platinum wire. The heat generated by the reaction increases the temperature of the platinum wire, and the resistivity of the platinum wire changes. Therefore, when the temperature of the platinum wire changes with encountering high temperature, the resistivity of the platinum wire will change, and the detected data will also change.

    ATO portable combustible gas detector adopts built-in suction pump, which can quickly detect the combustible gas concentration in the working environment. The pumping type combustible gas detector adopts high quality catalytic combustion sensor, has a very clear large LCD screen, and sound and light alarm, to ensure that it can also detect dangerous gases and reminder the user of the danger in a very adverse working environment.

    Basic Settings of Portable Gas Detector

    This video will show you the basic settings of ATO portable gas detectors including high/low alarm setting, language setting and time setting.

    Calibration of Portable Gas Detector

    This video will show how to calibrate the ATO portable gas detectors.

    Concentration Detection of Pesticides Gas
    Methyl bromide is an organic compound with the chemical formula CH3Br, which is mainly used as a pesticide, fumigant, refrigerant and solvent, and can also be used in organic synthesis.This video will mainly use methyl bromide and CH3Br as examples to introduce the detection of their concentrations.

    How to Detect Hydrogen Sulfide Concentration in the Toilet
    Hydrogen sulfide is a flammable acidic gas that smells like rotten eggs at low concentrations and is very toxic. In actual operation, it is necessary to ensure that the detection equipment or method used can accurately measure the concentration of hydrogen sulfide, and pay attention to safety issues during operation to avoid hydrogen sulfide poisoning.

    How much C2H4 (ethylene) do ripe bananas and apples produce?
    We have various gas detectors such as: CO, O2, O3, H2, NH3, H2S, CH4, Cl2, CH2O, etc, from 0~10000ppm, Industrial or daily use.

    Existing reviews of Portable Combustible Gas Detector, 0 to 100%LEL
    Easy to operate
    This gas detector permitted me to know my family was safe from any potential gas leaks after some natural gas supply line maintenance. It was very easy to use. Highly recommended!!!
    From: Cammey | Date: 14/12/2022
    Was this review helpful? Yes No (0/0)
    Fantastic gas detector
    It is a fantastic gas detector. It's very convenient to carry it when I go out. In addition, LCD dot matrix display can direct readout of gas type, unit, concentration and local time.
    From: Hahn | Date: 21/04/2022
    Was this review helpful? Yes No (0/0)
    The combustible gas detector that saves lives
    One tenant kept complaining about the "strong gas smell", but neither I nor the other tenants could smell it, for safety, I bought this gas gas detector, the data was quickly detected, and it was able to track the gas leak accurately Location, which solved a big annoyance for me.
    From: Joshua | Date: 19/04/2022
    Was this review helpful? Yes No (0/0)
    Recommend suitable gas sensor
    So I am looking for a sensor that can sense Nitrogen gas concentration in the system at an acceptable level.
    The N2 is being flooded into the system to help suppress oxygen and create a less combustible zone (it has been confirmed by a P. Eng that it is NOT an explosion rated situation). Other possible gasses include standard air and minute traces of ethanol ( to the point that they may as well not be there). Gasses in the area are constantly evacuated by a fume scoop.
    From: Zerlindah | Date: 21/09/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    As per your described gas environment, our N2 Gas Detector: ATO-GAS-N2, 0 to 100% Vol will work effectively.
    What kind of gas detector would you recommend to us?
    I would like to purchase a meter to sample and measure the concentration of hydrogen (%) in the presence of O2 in the output stream from an electrolyser. What would you recommend? The SKY2000 looked like a possible candidate, but I suspect I may not have fully understood the purpose of this model.
    From: Hathi | Date: 30/08/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, our portable gas detector SKY2000 can measure the following gases, but we need to know the specific concentration of oxygen and hydrogen respectively in your output stream. So, we can recommend the appropriate gas detector model.
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