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    Gas Detectors

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    Ammonia (NH3) Monitor, 0 to 50/100 ppm

    SKU: GD800-NH3
    Portable Ammonia NH3 detector for sale at a favorable price. It is a handheld gas monitor to detect NH3 gas leak, with optional measuring ranges of 0-50ppm and 0-100ppm. With the diffusion sampling method, this NH3 tester is ideal for personal and home use.

    Carbon Monoxide (CO) Tester, 0 to 500/1000/2000 ppm

    SKU: GD800-CO
    With a measure range 0 to 500 ppm, 0 to 1000 ppm, 0 to 2000 ppm, featuring response time of under 10 seconds, intuitive operation, durable construction, and audible/visual alarms, it ensures timely detection and safety. ATO offers CO Tester, delivering top-quality performance.

    Chlorine (Cl2) Monitor, 0 to 10/20/50/100 ppm

    SKU: GD800-CL2
    Purchase portable Chlorine Cl2 detector at an economical price, with the diffusion sampling method, optional measuring ranges of 0-10ppm, 0-20ppm, 0-50ppm, 0-100ppm. It is a handheld gas monitor to detect Cl2 gas leak, ideal for personal and home use.

    Hydrogen Sulfide (H2S) Monitor, 0 to 50/100/200 ppm

    SKU: GD800-H2S
    With a measure range of 0 to 50 ppm, 0 to 100 ppm, 0 to 200 ppm, h2s detector offers the flexibility you need. Optional low alarm, high alarm ,working temperature -20℃~50℃, with a swift response time of under 10 seconds, you'll receive timely data.

    Oxygen (O2) Gas Meter, 0 to 25%/30% VOL

    SKU: GD700-O2
    0 to 25%/30% VOL, Oxygen O2 Gas Detector easy to carry. With a rapid response time of ≤10 seconds, you can trust it to alert you to potential hazards promptly. Sound, light, vibration alarm, high and low alarm values can be set by yourself.

    Sulphur Dioxide (SO2) Monitor, 0 to 20/50/100 ppm

    SKU: GD700-SO2
    Sulphur Dioxide (SO2) Monitor, with measure range of 0 to 20 ppm, 0 to 50 ppm, 0 to 100 ppm, outstanding resolution of 0.1 ppm, and response time of less than 10 seconds, this monitor is a dependable tool for a wide range of industrial and environmental applications.

    Handheld Ammonia (NH3) Gas Detector, 0 to 50/100/500 ppm

    SKU: GD200-NH3
    Low price handheld pumping-type gas detector provides the Ammonia (NH3) gas leak monitoring with high accuracy sensor, audible and visual alarm, optional measuring range 0 to 50ppm, 0 to 100ppm, 0 to 200ppm, 0 to 500ppm etc., LCD display, easy readout, small & portable design, convenient to carry.

    Handheld Carbon Monoxide (CO) Gas Detector, 0 to 500/1000/2000 ppm

    SKU: GD200-CO
    Handheld carbon monoxide (CO) detector use high accuracy sensor, pump suction type, selectable measuring range of 0 to 500 ppm, 0 to 1000 ppm, 0 to 2000 ppm, gas leak alarm with audible, visual and vibrating, compact size and light weight, long working time, easy to carry and operation.

    Handheld Hydrogen Sulfide (H2S) Gas Detector, 0 to 50/100/500 ppm

    SKU: GD200-H2S
    This pump-type single gas detector is suitable for detecting the leakage of hydrogen sulfide (H2S), with a range of 0-50ppm, 0-100ppm, 0-200ppm, 0-500ppm etc., for options, and gives light, sound and vibration alarm. Favorable price and high reliability.

    Portable Carbon Dioxide (CO2) Infrared Gas Detector, 0 to 2000/5000/10000 ppm

    SKU: GD200-CO2
    Portable carbon dioxide (CO2) infrared detector adopts high accuracy sensor, measuring range available with 0-2000ppm, 0-5000ppm, 0-10000ppm, or 0-10%VOL, 0-20%VOL, 0 to 100% VOL, with LCD display, audible, visual & vibrating alarm, compact size, easy to carry and operate.

    Portable Chlorine (Cl2) Gas Detector, 0 to 10/50/100 ppm

    SKU: GD200-Cl2
    Portable Chlorine (Cl2) gas detector with built-in micro pump has measuring ranges of 0 to 10ppm / 20ppm / 50ppm / 100ppm for your selection, and give alarms with sound, light and vibration. Chlorine gas monitor uses high precision sensor, easy operation, high reliability and low price.

    Portable Combustible Gas Detector, 0 to 100%LEL

    SKU: GD200-LEL
    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.

    Portable Ethylene (C2H4) Gas Detector, 0 to 10/20/100/500/1000 ppm

    SKU: GD200-C2H4
    Favorable price C2H4 ethylene gas detector is kind of mini size and high accuracy portable gas detector. The handheld C2H4 gas detector is with back clip, protected by silicone case, suitable for different kinds of situations. Easy to operate, comprehensive functions, can measure sulfur dioxide gas, measure range from 0 to 10/20/50/100/500/1000/200 ppm.

    Portable Formaldehyde (CH2O) Gas Detector, 0 to 10/50/100 ppm

    SKU: GD200-CH2O
    Handheld formaldehyde detector, light and compact, easy to detect the CH2O / HCHO concentration, optional measuring rang of 0 to 10 ppm, 0 to 50 ppm or 0 to 100 ppm, best for indoor air quality monitoring, with sound, light & vibrating alarm.

    Portable Hydrogen (H2) Gas Detector, 0 to 500/1000/2000 ppm

    SKU: GD200-H2
    Portable hydrogen (H2) gas detector draws the gas sample by a micro pump, with high accuracy and reliability, measurement ranging from 0 to 500ppm, 1000ppm, 2000ppm, 5000ppm for your choice. Real-time LCD display, audible, visual & vibrating alarm, durable and compact design, easy to carry and operate. High precision H2 detector with measuring range 0-10ppm (0.001ppm) is also available.

    Portable Hydrogen Chloride (HCL) Gas Detector, 0 to 10/20/50/100/200 ppm

    SKU: GD200-HCL
    Portable HCL Hydrogen Chloride gas detector is kind of mini size and high accuracy portable gas detector. Low price handheld HCL gas detector is with back clip, protected by silicone case, suitable for different kinds of situations. Easy to operate, comprehensive functions, can measure Hydrogen Chloride gas, measure range from 0 to 10/20/50/100/200 ppm.

    Portable Hydrogen Cyanide (HCN) Gas Detector, 0 to 10/20/50/100 ppm

    SKU: GD200-HCN
    High performance hydrogen cyanide HCN gas detector is portable and easy to operate with comprehensive functions, which can measure hydrogen cyanide, measuring range from 0 to 10/20/50/100 ppm. The handheld HCN gas detector is with back clip, protected by silicone case, suitable for different kinds of situations.

    Portable Methane (CH4) Gas Detector, 0 to 100% Vol

    SKU: GD200-CH4
    Portable Methane (CH4) gas detector, equipped with infrared methane gas sensor, built-in sampling pump, 0 to 100% Vol measuring range, sound, light and vibration alarm, long life time, fast detection and high accuracy.

    Portable Methyl Bromide (CH3Br) Gas Detector, 0 to 1/10/20/50/100/200 ppm

    SKU: GD200-CH3BR
    Handheld CH3Br methyl bromide gas detector is kind of mini size and high accuracy portable gas detector. Portable CH3Br gas detector with factory price is with back clip, protected by silicone case, suitable for different kinds of situations. Easy to operate, comprehensive functions, can measure methyl bromide gas, measure range from 0 to 1/10/20/50/100/200 ppm.

    Portable Multi Gas Detector, 4-Gas, LEL, O2, CO, H2S

    SKU: GD200-M4
    With built-in gas sampling pump, multi-gas detector can measure 4 gases EX (0-100%LEL), O2 (0-30%), CO (0-1000 PPM), H2S (0-100PPM) fast and accurately. Featuring fast response, large pumping flow rate, small size, portable design, and durable housing, the gas monitor is suitable for various environments.

    A gas detector or gas monitor is a device to detect the concentration of leak gases in one area. Gas detectors play an important role in safety system to safeguard people and animal’s life. The gas detectors are widely used in the industries like refineries, pharmaceutical manufacturing, chemical plants, waste-water treatment etc., as well as confined spaces like pipeline.

    ATO provides portable/handheld gas detectors and fixed gas detectors to monitor gas leak or concentration of Ammonia (NH3), Hydrogen Sulfide (H2S), Chlorine (Cl2), Hydrogen (H2), Nitrogen (N2), Ozone (O3), etc., in different applications or environments. The portable gas detectors have two versions, diffusion-type and pump-type. For the different detected gases, there are available for optional measuring ranges. High accuracy and reliability is a biggest advantage of ATO gas detectors but it is not the all. To know more about characteristics of ATO gas detectors, just go on to the product page.

    What can a gas detector detect?

    • Combustible gases: Natural gas (methane), liquefied gas, coal gas (hydrogen), acetylene, pentane, alkynes, acetone, toluene, alcohols, hydrocarbons, light oil, etc.
    • Toxic gases: Carbon monoxide, hydrogen sulfide, ammonia, chlorine, oxygen, phosphine, sulfur dioxide, hydrogen chloride, chlorine dioxide and other toxic and harmful gases.

    Gas Detector Application

    Oil and gas

    The gas detectors are typically applied in the exploration drilling platforms, production platforms, onshore oil and gas terminal stations, refineries, etc. And it is often used to detect the inflammable and explosive gases like Hydrocarbon gas, and toxic gases such as hydrogen sulfide, carbon monoxide, and so on.

    Semiconductor manufacturing

    In the water reactor, water dryer, and chemical vapor deposition and other typical occasions, the portable or fixed gas detectors are usually used to monitor the gas leakage and give the alarm.

    Chemical devices or equipment

    In the production process, using the by-products usually produces a variety of inflammable and toxic gases. The gas detectors are commonly used in the areas from raw material storage, processing area, laboratory, pump area, compressor station to boot area or non-boot area. The typical gases involve general hydrocarbon gas and other combustible gases, as well as hydrogen sulfide, hydrogen fluoride, ammonia and other toxic gases.

    Power generation station

    Traditionally, the main fuels for power stations are coal and oil. In Europe and the United States, most power station fuel has been converted to natural gas. The typical application fields are boiler tube operations and near the combustion furnace, turbine packaging and its surroundings, coal bunker and conveyor belts in older coal/oil power stations. And the gas leak detectors are often applied for monitoring natural gas, hydrogen, carbon monoxide, SOx, NOx and other inflammable or toxic gases.

    Wastewater treatment plant

    Wastewater treatment device is very common in many cities and towns. the sewage naturally emits methane and hydrogen sulfide. The H2S gas with the smell of "rotten eggs" can be detected by the nose even when it is as little as 0.1 ppm, so it is noticeable. Therefore, a high sensitivity gas detector is very important to monitor the gas leak and guard the life of the workers.

    Calibration of Fixed Gas Detector

    In clean air, press the MENU, then press "+" to enter F04, then press OK, then press BACK. The detected data will become zero. Prepare the standard gas, we use iso-butane for calibration.

    • Step 1: Press the Menu, then press "+" to enter F07, change the data to be the same as the value of the standard gas, then press OK.
    • Step 2: Press the Menu, then press "+" to enter F08, now you will see it shows 0, change it to 1, then press OK and back.
    • Step 3: Connect the sensor with the standard gas, gas flow rate is 500mL/min, wait till the data is stable, then press the OK for 3 seconds.

    The calibration is finished. If the detected data difference among the detectors is only 2 or 3, then you can just do the zero calibration. Only when the detected data difference is above 10, then you need to do the span calibration by standard gas.

    If you want to see more details of the calibration, please check:

    Why invest in ATO gas detectors?

    • ATO gas detector uses high precision and high stability sensors that can be freely combined and flexibly configured to achieve the function of simultaneous measurement of multiple gases.
    • Handheld gas detector adopt PPM, mg/m3, %VOL, %LEL gas concentration units, which can be freely switched according to the choice.
    • The use of ultra-high decibel buzzer alarm, vibration power prompt, four lights flashing. Triple alarm, safe and reliable, high and low secondary alarm values can be set by yourself.
    • With real-time gas concentration curve drawing function, it is convenient to check the changes of gas concentration in the recent period of time.
    • With password management function, important operations require password verification to effectively prevent misoperation.
    • The use of large-capacity lithium polymer rechargeable batteries can ensure that the instrument can work continuously for a long time; the battery power is displayed in real time; it has its own charging prompt and undervoltage prompt function.
    • With data storage function, you can view historical data on the instrument, or connect to a computer to export data, print and compare, and observe data changes.
    • Comes with sturdy and high-grade all-stainless steel alligator clip, strong corrosion resistance, sturdy and durable, and easy to carry during operation.
    • ATO gas detector comes with a high-strength and high-hardness special engineering PC plastic standard gas cover, which has the function of waterproof and dustproof, and can also be used for gas calibration.
    • The lower shell is made of high-strength and high-hardness special engineering PC plastic, which has strong flame retardancy, wear resistance, and fatigue resistance. The appearance is beautiful and fashionable. Waterproof and dustproof function.
    • The upper shell is made of full low carbon austenitic stainless steel after pickling, annealing, cold rolling and other processes. It has excellent corrosion resistance, strong durability, good cleanliness and durability. Small and light, easy to carry, it is most suitable for multi-component occasions such as emergency rescue, disaster disposal, atmospheric environment monitoring, analysis of special pollutants in parks, vehicle exhaust emissions, and boiler flue gas analysis.
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