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    Gas Detectors

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

    SKU: GD300-HCL
    Favorable price HCL hydrogen chloride gas detector with alarm light is a 24h continuously wall mounted type gas detector which can detect HCL in different kinds of situations. Measuring range 0 to 10/20/50/100/200 ppm, powered by 24V DC, with 4-20mA, RS485, relay signal output.

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

    SKU: GD300-HCN
    Low price HCN hydrogen cyanide fixed gas detector, 0 to 10/20/50/100 ppm, with alarm light is a kind of monitoring gas concentration in different kinds of situations or pipelines 24h continuously wall mounted type gas detector. Powered by 24V DC, with 4-20mA, RS485, relay signal output.

    Fixed Hydrogen Sulfide (H2S) Gas Detector, 0 to 50/100/200 ppm

    SKU: GD300-H2S
    Fixed H2S gas detector is 24 hours online to detect the hydrogen sulfide and gives sound and light alarm with measuring range from 0 to 50 ppm, 0 to 100 ppm, or 0 to 200 ppm. High accuracy and reliability hydrogen sulfide detector has real-time display and infrared remote control with optional output signal 4-20mA and RS485.

    Fixed Methane (CH4) Gas Detector, 0 to 100% LEL

    SKU: GD300-CH4
    Buy fixed methane gas detector online at good price. Measuring range 0-100% LEL, resolution 1% LEL, optional output signal 4-20mA and RS485, high accuracy 3% F.S. CH4 gas detector 24-hour works to detect and monitor methane concentration, sound and light alarm, real-time display, remote control is available.

    Fixed Nitric Oxide (NO) Gas Detector, 0 to 250/500/1000 ppm

    SKU: GD300-NO
    The exclusive discounted nitric oxide gas detector provides highly accurate measurements for sale. The built-in alarm system ensures you know the NO concentration in the environment promptly. The measurement range is 0~250ppm, 0~500ppm, and 0~1000ppm to choose from, which is highly reliable. Characteristic, high stability hydrogen sulfide detector, real-time display, output signal 4-20mA & RS485 optional.

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

    SKU: GD300-N2
    Buy nitrogen gas detector from high-quality manufacturer at good price. Measuring range 0-100% Vol, supports remote control, optional output signal 4-20mA and RS485, high accuracy 3% F.S, fast response within 10s. N2 gas detector for nitrogen concentration detecting and leak monitor, sound and light alarm, 24h online, real-time display, fixed mounting.

    Fixed Nitrogen Dioxide (NO2) Gas Detector, 0 to 100/500/1000 ppm

    SKU: GD300-NO2
    Fixed nitrogen dioxide (NO2) gas detectors for detecting NO2 concentrations for sale, with optional measuring ranges from 0 to 100/500/1000 ppm. The NO2 leak detector has audible and visual gas alarm and data display functions, a unique infrared control function, which can control the equipment non-contactly, the signal output is optional 4-20mA and RS485, and the explosion-proof design is fast, reliable, and stable.

    Fixed Oxygen (O2) Gas Detector, 0 to 25% / 30% Vol

    SKU: GD300-O2
    Fixed gas detector for detecting oxygen concentration. Measuring range 0~25% or 0~30% for selection, output signal 4-20mA and RS485, high accuracy 3% F.S. O2 gas detector has sound and light alarm, real-time display, remote control, small size, lightweight, low price.

    Fixed Ozone (O3) Gas Detector, 0 to 1/5/10/20/50/100 ppm

    SKU: GD300-O3
    Reliable manufacturer Ozone gas detector for sale. Available measuring range 0-1/5/10/20/50/100 ppm, sound and light alarm by remote control, output signal 4-20mA and RS485, high accuracy 3% F.S, fast response within 10s. O3 gas concentration detector is fixed mounting, small size, compact structure, competitive price.

    Fixed Phosphine (PH3) Gas Detector, 0 to 100/1000/3000 ppm

    SKU: GD300-PH3
    Selling a PH3 phosphine gas detector with an alarm light at a low price. This is a wall-mounted explosion-proof gas detector with a measuring range of 0 to 100/1000/3000 ppm. It can work continuously for 24 hours and is powered by 12-24V DC, the gas detector has a connection distance of >1000m, and the protection level is IP65.

    Fixed Sulfur Dioxide (SO2) Gas Detector, 0 to 20/50/100 ppm

    SKU: GD300-SO2
    Favorable price SO2 sulfur dioxide gas detector with alarm light is a 24h continuously wall mounted type gas detector which can detect SO2 in different kinds of situations. Measuring range 0 to 20/50/100 ppm, powered by 24V DC, with 4-20mA, RS485, relay signal output.

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

    SKU: GD500-4GAS
    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

    SKU: GD500-CO
    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.

    Portable Multi Gas Analyzer, NO2, SO2, CO, O3

    SKU: GD600-4GAS
    High accuracy multi gas analyzer can detect 4 gases of NO2 ( 0-10 ppm), SO2 (0-10 ppm), CO (0-20 ppm), O3 (0-10 ppm), high definition LCD display to show the measurement data, large capacity rechargeable Li-battery for long working time, compact and light design, portable and easy operation.

    Fixed Benzene (C6H6) Gas Detector, 0 to 10/100/200/1000/10000 ppm

    SKU: GD300-C6H6
    Buy favorable price fixed Benzene (C6H6) gas detector online, with advanced sensor, measuring ranges of 0-1/10/50/100/200/1000/2000/5000/10000ppm. This C6H6 gas monitor with sound & light alarm is a safey device that monitor and alert individuals to the presence of Benzene gas in industrial, laboratory, or commercial settings.

    Fixed Chlorine Dioxide (ClO2) Gas Detector, 0 to 1/5/10/20/50/100 ppm

    SKU: GD300-CLO2
    Economical price fixed Chlorine Dioxide (ClO2) gas detector for sale, with sound & light alarm, advanced sensor, optional measuring ranges of 0-1/5/10/20/50/100ppm. This Chlorine Dioxide monitor is commonly used in industrial settings where ClO2 gas may be present, such as water treatment plants, paper mills, and chemical processing facilities.

    Fixed Hydrocarbons (HC) Gas Detector, 0 to 100%LEL

    SKU: GD300-HC
    Cost-effective fixed Hydrocarbons (HC) gas detector for sale, with sound & light alarm, advanced sensor, measuring range from 0 to 100% LEL. This Hydrocarbons vapor monitor is designed to continuously monitor and detect the presence of HC gases in various industrial settings, such as oil refineries, chemical plants, and offshore drilling platforms.

    Fixed Nitrogen Oxides (NOX) Gas Detector, 0 to 20/50/100/500/1000 ppm

    SKU: GD300-NOX
    Low price fixed NOX gas detector is an essential safety monitoring equipment designed to continuously monitor and detect Nitrogen Oxides (NO and NO2) in industrial environments. This gas sniffer comes with an advanced sensor and sound & light alarm, measuring ranges of 0-1/5/10/20/50/100/250/500/1000ppm.

    Fixed VOC Gas Detector, 0 to 10/100/200/1000/10000 ppm

    SKU: GD300-VOC
    Fixed VOC (Volatile Organic Compound) gas detector is used to monitor the presence of harmful gases in industrial settings, laboratories, and other environments where VOCs are emitted. Factory price gas monitor comes with an advanced sensor and sound & light alarm to detect and quantify various VOCs in the air, providing real-time data to ensure the safety of workers and the surrounding environment, measuring ranges of 0-1/5/10/20/50/100/200/500/1000/2000/5000/10000ppm available.

    Portable Hydrogen Peroxide (H2O2) Gas Detector, 0 to 100/200/500/1000 ppm

    SKU: GD200-H2O2
    Handheld Hydrogen Peroxide H2O2 gas detector is kind of mini size and high accuracy portable gas detector. Low price portable H2O2 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 100/200/500/1000 ppm.

    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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