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    Gas Detectors

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

    $828.16
    SKU: ATO-GAS-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

    $398.76
    SKU: ATO-GAS-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

    $478.96
    SKU: ATO-GAS-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

    $969.23
    SKU: ATO-GAS-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 Combustible Gas Detector, 0 to 100%LEL

    $410.34
    SKU: ATO-GAS-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 Methane (CH4) Gas Detector, 0 to 100% Vol

    $2,046.87
    SKU: ATO-GAS-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 Multi Gas Detector, 4-Gas, LEL, O2, CO, H2S

    $828.16
    SKU: ATO-GAS-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.

    Portable Oxygen (O2) Gas Detector, 0 to 30% Vol

    $479.22
    SKU: ATO-GAS-O2
    Portable oxygen detector, ideal for monitoring O2 gas concentration in the range of 0 to 30% Vol or 0 to 100% Vol, with sound, light and vibrating alarm, light and compact, easy to setting and operation, long working time with large capacity battery, high accuracy and low price.

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

    $846.15
    SKU: ATO-GAS-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 Formaldehyde (CH2O) Gas Detector, 0 to 10/50/100 ppm

    $669.23
    SKU: ATO-GAS-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

    $784.62
    SKU: ATO-GAS-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 Nitric Oxide (NO) Gas Detector, 0 to 20/50/100 ppm

    $846.29
    SKU: ATO-GAS-NO
    Favorable price Nitric Oxide (NO) Gas Detector for sale. Optional measuring range 0 to 20/50/100/250 ppm, light weight and compact size, portable and convenient to transport. Give sound, light and vibration alarm for NO gas leak, fast response and accurate detection.

    Portable Nitrogen (N2) Gas Detector, 0 to 100% Vol

    $891.38
    SKU: ATO-GAS-N2
    Portable N2 gas detector, pump suction type, suitable for Nitrogen gas leakage detection with 0 to 100% Vol measuring range, and give an alarm with sound, light and vibration. Light & compact Nitrogen gas detector, high accuracy, fast response, and good cost performance.

    Portable Ozone (O3) Gas Detector, 0 to 10/20/50 ppm

    $815.39
    SKU: ATO-GAS-O3
    Portable Ozone gas detector, applied for the O3 gas detection with high accuracy and fast response, measuring range from 0 to 10ppm / 20ppm / 50ppm for options, real-time LCD display, give sound, light & vibrating alarm, small & light O3 detector at affordable price, handheld design, convenient to carry around.

    Portable Nitrogen Dioxide (NO2) Gas Detector, 0 to 20/50/100 ppm

    $726.99
    SKU: ATO-GAS-NO2
    Portable Nitrogen Dioxide (NO2) gas detector for sale at economic price. Optional measuring range 0 to 20/50/100 ppm, light weight and compact size, convenient to transport. Sound, light and vibration alarm for NO2 gas leak, fast response and accurate detection.

    Portable VOC Gas Detector, 0 to 100/200/1000 ppm

    $2,896.35
    SKU: ATO-GAS-TVOC
    Portable VOC gas detector features high precision, easy to carry and operate, fast detection. Pumping style gas detector has sound, light & vibrating alarm and also available for detecting range of 0 to 100 ppm, 0-200ppm, 0 to 1000 ppm.

    Handheld Multi-Gas (4-Gas) Detector, CO, H2S, O2, LEL

    $449.67
    SKU: ATO-GAS-S4
    Handheld multi-gas detector provides 4 gases detection, monitoring CO (0-1000ppm), H2S (0-100ppm), O2 (0-30%VOL), EX (0-100%LEL) with high accurate sensors, and give sound, light and vibration alarms, light weight and mini size, portable and easy to carry, long battery life, reliable quality and low price.

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

    $372.86
    SKU: ATO-GAS-SCO
    Portable carbon monoxide (CO) detector provide high precision detection for CO gas with the range available for 0-500ppm, 0-1000ppm, and 0-2000ppm, audible, visual and vibrating alarm, light weight and small size, easy to carry everywhere with a clip, suitable for various applications.

    Fixed Ammonia (NH3) Gas Detector, 0 to 50/100/200 ppm

    $754.13
    SKU: ATO-GAS-NH3-A
    Fixed ammonia gas detector is used to detect the concentration of NH3 with selectable measuring range of 0 to 50/100/200 ppm. NH3 detector with sound and light alarm and real-time display, signal output 4-20mA, or RS485, high accuracy, high reliability and low price.

    Fixed Carbon Monoxide (CO) Gas Detector, 0 to 100/500/1000 ppm

    $486.77
    SKU: ATO-GAS-CO-A
    Fixed CO gas detector monitors the carbon monoxide concentration and sounds the alarm with remote control, selectable measuring range 0-100ppm, 0-500ppm, 0-1000ppm or 0-2000ppm. CO gas detector has signal output 4-20mA or RS485. Compact design, high accuracy, fast response, high reliability and favorable price.

    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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