Portable Gas Detectors

Portable gas detectors refer to a class of independent gas detectors that are lightweight, compact, easy to operate, and movable. They are very suitable for confined spaces, point leak detection, and mobile use. They are used to detect the composition and concentration of various gases in the environment.

Sino-Inst’s portable gas detectors can monitor and control exhaust emissions, air pollution, and gas concentrations in industrial production, urban environments, and agricultural greenhouses. It can accurately capture small changes in gas concentrations in real time, thereby promptly detecting potential safety hazards.

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Key features of portable gas detectors

Benefits

  • Portability: These devices are usually lightweight and easy to carry and operate.
  • Versatility: Many portable gas detectors can detect multiple gases at the same time.
  • Real-time monitoring and alarm: They can monitor the gas concentration in the environment in real time and issue an alarm immediately when dangerous gases are detected.
  • Data recording: These devices usually have data recording functions for later analysis and tracking.
Portable Gas Detectors
Gas Concentration and Leak Detection

Application of Portable Gas Detectors

Portable gas detection technology can be used for hazardous gas detection, organic VOC gas detection, combustible gas detection, and single gas detection. Its application in detecting and eliminating safety risk precursors is also growing.

The rapid development of portable gas detectors enables the early detection of leaks. By studying the physical and chemical properties of early safety risks, gas detection can effectively prevent disasters, effectively controlling potential safety risks while ensuring personal safety.

Pharmaceutical and Chemical Industries

Portable gas detectors can monitor combustible gases such as propylene and butane in real time, simultaneously track oxygen levels, and capture toxic gases such as hydrogen sulfide. This ensures workers in confined spaces are aware of the surrounding gas environment at all times, preventing potential hazards.

Municipal Construction and Maintenance

Wastewater treatment plants may contain high concentrations of hydrogen sulfide, underground pipelines may leak gas (methane), and landfills may produce methane, hydrogen sulfide, and other gases. Portable gas detectors can cover a variety of operational scenarios.

Portable gas detector for confined space

Harsh underground environments such as mining and metallurgy

Underground coal mine operations face risks such as gas explosions, carbon monoxide poisoning, and hypoxia. Portable gas detectors can provide simultaneous detection, significantly reducing the incidence of underground gas safety accidents.

Emergency Rescue

Fire rescue and tunnel construction involve complex gas environments. The rapid response of portable gas detectors can help rescuers assess risks before entering the scene. For example, excessive carbon monoxide levels and insufficient oxygen levels at a fire scene provide data support for rescue plan development.

Common Gas Detection Ranges

Detection gasRangeMaximum allowable errorMinimum readingResponse time T90
Combustible gas (EX)0-100%LEL＜±3%(F.S)0.1%LEL≤10 seconds
Combustible gas (EX)0-100%Vol＜±3%(F.S)0.1%Vol≤10 seconds
Methane (CH4)0-100%LEL＜±3%(F.S)0.1%LEL≤10 seconds
Methane (CH4)0-100%Vol＜±3%(F.S)0.1%Vol≤10 seconds
Oxygen (O2)0-30%Vol＜±3%(F.S)0.01%Vol≤10 seconds
Oxygen (O2)0-100%Vol＜±3%(F.S)0.01%Vol≤10 seconds
Oxygen (O2)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Nitrogen (N2)0-100%Vol＜±3%(F.S)0.01%Vol≤10 seconds
Carbon monoxide (CO)0-100ppm＜±3%(F.S)0.1ppm≤25 seconds
Carbon monoxide (CO)0-1000ppm＜±3%(F.S)0.1ppm≤25 seconds
Carbon monoxide (CO)0-2000ppm＜±3%(F.S)0.1ppm≤25 seconds
Carbon monoxide (CO)0-20000ppm＜±3%(F.S)1ppm≤25 seconds
Carbon monoxide (CO)0-100000ppm＜±3%(F.S)1ppm≤20 seconds
Carbon dioxide (CO2)0-500ppm＜±3%(F.S)1ppm≤20 seconds
Carbon dioxide (CO2)0-2000ppm＜±3%(F.S)1ppm≤20 seconds
Carbon dioxide (CO2)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Carbon dioxide (CO2)0-50000ppm＜±3%(F.S)1ppm≤30 seconds
Carbon dioxide (CO2)0-20%Vol＜±3%(F.S)0.01%Vol≤30 seconds
Carbon dioxide (CO2)0-100%Vol＜±3%(F.S)0.01%Vol≤30 seconds
Carbon dioxide (CO2)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Formaldehyde (CH2O)0-10ppm＜±3%(F.S)0.01ppm≤30 seconds
Formaldehyde (CH2O)0-100ppm＜±3%(F.S)0.01ppm≤45 seconds
Formaldehyde (CH2O)0-1000ppm＜±3%(F.S)1ppm≤20 seconds
Ozone (O3)0-1ppm＜±3%(F.S)0.001ppm≤20 seconds
Ozone (O3)0-5ppm＜±3%(F.S)0.001ppm≤20 seconds
Ozone (O3)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Ozone (O3)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Ozone (O3)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Ozone (O3)0-30000ppm＜±3%(F.S)1ppm≤30 seconds
Ozone (O3)0-20mg/L＜±3%(F.S)0.01mg/L≤30 seconds
Ozone water (O3)0-20mg/L＜±3%(F.S)0.01mg/L≤30 seconds
Hydrogen sulfide (H2S)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Hydrogen sulfide (H2S)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen sulfide (H2S)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen sulfide (H2S)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Hydrogen sulfide (H2S)0-10000ppm＜±3%(F.S)1ppm≤30 seconds
Sulfur dioxide (SO2)0-10ppm＜±3%(F.S)0.001ppm≤45 seconds
Sulfur dioxide (SO2)0-20ppm＜±3%(F.S)0.01ppm≤30 seconds
Sulfur dioxide (SO2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Sulfur dioxide (SO2)0-500ppm＜±3%(F.S)0.1ppm≤30 seconds
Sulfur dioxide (SO2)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Sulfur dioxide (SO2)0-10000ppm＜±3%(F.S)1ppm≤30 seconds
Nitrogen monoxide (NO)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Nitrogen monoxide (NO)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Nitrogen monoxide (NO)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Nitrogen dioxide (NO2)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Nitrogen dioxide (NO2)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Nitrogen dioxide (NO2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Nitrogen dioxide (NO2)0-1000ppm＜±3%(F.S)0.1ppm≤25 seconds
Nitrogen dioxide (NO2)0-5000ppm＜±3%(F.S)1ppm≤25 seconds
Nitrogen dioxide (NO2)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Nitrogen oxides (NOX)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Nitrogen oxides (NOX)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Nitrogen oxides (NOX)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Chlorine (CL2)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Chlorine (CL2)0-20ppm＜±3%(F.S)0.01ppm≤30 seconds
Chlorine (CL2)0-200ppm＜±3%(F.S)0.1ppm≤30 seconds
Chlorine (CL2)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Ammonia (NH3)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Ammonia (NH3)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Ammonia (NH3)0-1000ppm＜±3%(F.S)0.1ppm≤30 seconds
Ammonia (NH3)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Ammonia (NH3)0-100%LEL＜±3%(F.S)0.1%LEL≤30 seconds
Hydrogen (H2)0-100%LEL＜±3%(F.S)0.1%LEL≤30 seconds
Hydrogen (H2)0-1000ppm＜±3%(F.S)0.1ppm≤30 seconds
Hydrogen (H2)0-20000ppm＜±3%(F.S)1ppm≤30 seconds
Hydrogen (H2)0-40000ppm＜±3%(F.S)1ppm≤30 seconds
Hydrogen (H2)0-100%Vol＜±3%(F.S)0.01%Vol≤30 seconds
Helium (He)0-100%Vol＜±3%(F.S)0.01%Vol≤10 seconds
Argon (Ar)0-100%Vol＜±3%(F.S)0.01%Vol≤10 seconds
Xenon (Xe)0-100%Vol＜±3%(F.S)0.01%Vol≤30 seconds
Hydrogen cyanide (HCN)0-30ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen cyanide (HCN)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen chloride (HCL)0-20ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen chloride (HCL)0-200ppm＜±3%(F.S)0.1ppm≤20 seconds
Phosphine (PH3)0-5ppm＜±3%(F.S)0.001ppm≤20 seconds
Phosphine (PH3)0-25ppm＜±3%(F.S)0.01ppm≤20 seconds
Phosphine (PH3)0-2000ppm＜±3%(F.S)1ppm≤30 seconds
Chlorine dioxide (CLO2)0-1ppm＜±3%(F.S)0.001ppm≤30 seconds
Chlorine dioxide (CLO2)0-10ppm＜±3%(F.S)0.01ppm≤30 seconds
Chlorine dioxide (CLO2)0-200ppm＜±3%(F.S)0.01ppm≤30 seconds
Ethylene oxide (ETO)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Ethylene oxide (ETO)0-1000ppm＜±3%(F.S)0.1ppm≤30 seconds
Ethylene oxide (ETO)0-100%LEL＜±3%(F.S)1%LEL≤30 seconds
Phosgene (COCL2)0-1ppm＜±3%(F.S)0.001ppm≤30 seconds
Phosgene (COCL2)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Silane (SiH4)0-1ppm＜±3%(F.S)0.001ppm≤30 seconds
Silane (SiH4)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Fluorine (F2)0-1ppm＜±3%(F.S)0.001ppm≤30 seconds
Fluorine (F2)0-10ppm＜±3%(F.S)0.01ppm≤30 seconds
Fluorine (F2)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen fluoride (HF)0-10ppm＜±3%(F.S)0.01ppm≤20 seconds
Hydrogen fluoride (HF)0-50ppm＜±3%(F.S)0.01ppm≤20 seconds
Hydrogen bromide (HBr)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Diborane (B2H6)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Arsine (AsH3)0-1ppm＜±3%(F.S)0.001ppm≤30 seconds
Arsine (AsH3)0-10ppm＜±3%(F.S)0.01ppm≤30 seconds
Arsine (AsH3)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Germane (GeH4)0-2ppm＜±3%(F.S)0.001ppm≤30 seconds
Germane (GeH4)0-20ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrazine (N2H4)0-1ppm＜±3%(F.S)0.001ppm≤30 seconds
Hydrazine (N2H4)0-300ppm＜±3%(F.S)0.1ppm≤30 seconds
Tetrahydrothiophene (THT)0-100mg/m3＜±3%(F.S)0.01mg/m3≤30 seconds
Bromine (Br2)0-10ppm＜±3%(F.S)0.001ppm≤30 seconds
Bromine (Br2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Bromine (Br2)0-2000ppm＜±3%(F.S)1ppm≤30 seconds
Acetylene (C2H2)0-100%LEL＜±3%(F.S)0.1%LEL≤30 seconds
Acetylene (C2H2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Acetylene (C2H2)0-1000ppm＜±3%(F.S)0.1ppm≤30 seconds
Ethylene (C2H4)0-100%LEL＜±3%(F.S)0.1%LEL≤30 seconds
Ethylene (C2H4)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Ethylene (C2H4)0-2000ppm＜±3%(F.S)0.1ppm≤30 seconds
Acetaldehyde (C2H4O)0-10ppm＜±3%(F.S)0.01ppm≤30 seconds
Ethanol (C2H6O)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Ethanol (C2H6O)0-2000ppm＜±3%(F.S)1ppm≤60 seconds
Methanol (CH6O)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Methanol (CH6O)0-2000ppm＜±3%(F.S)1ppm≤30 seconds
Carbon disulfide (CS2)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Carbon disulfide (CS2)0-5000ppm＜±3%(F.S)0.01ppm≤30 seconds
Acrylonitrile (C3H3N)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Acrylonitrile (C3H3N)0-2000ppm＜±3%(F.S)1ppm≤30 seconds
Methylamine (CH5N)0-50ppm＜±3%(F.S)0.01ppm≤30 seconds
I20-50ppm＜±3%(F.S)0.01ppm≤30 seconds
Styrene (C8H8)0-200ppm＜±3%(F.S)0.1ppm≤30 seconds
Styrene (C8H8)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Vinyl chloride (C2H3CL)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Trichloroethylene (C2HCL3)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Tetrachloroethylene (C2CL4)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Laughing gas (N2O)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Nitrogen trifluoride (NF3)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Hydrogen peroxide (H2O2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Sulfuryl fluoride (SO2F2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Sulfuryl fluoride (SO2F2)0-30000ppm＜±3%(F.S)1ppm≤30 seconds
Sulfuryl fluoride (SO2F2)0-200g/m3＜±3%(F.S)0.1g/m3≤30 seconds
Sulfuryl fluoride (SO2F2)0-100ppm＜±3%(F.S)0.01ppm≤30 seconds
Sulfuryl fluoride (SO2F2)0-5000ppm＜±3%(F.S)1ppm≤30 seconds
Sulfuryl fluoride (SO2F2)0-10000ppm＜±3%(F.S)1ppm≤30 seconds
C6H60-10ppm＜±3%(F.S)0.01ppm≤30 seconds
C6H60-100ppm＜±3%(F.S)0.01ppm≤30 seconds
C6H60-2000ppm＜±3%(F.S)1ppm≤30 seconds

When choosing a portable gas detector, you need to consider the detection range and accuracy of different sensors and ranges. In addition, the data storage capacity, explosion-proof performance, and portability of the detector are also important considerations. For example, a handheld all-in-one detector integrates the functions of multiple sensors and can detect multiple gases at the same time. Single-function detectors are lighter and more convenient, and are suitable for occasions where specific gases need to be detected quickly.

FAQ

A portable gas detector is a portable, mobile, or handheld gas detector designed to quickly and accurately detect gas leaks or excessive gas concentrations. It is primarily distinguished from fixed gas detectors.

Portable gas detectors are small, handheld devices that can quickly and accurately detect gas concentrations in an environment. They are suitable for use during inspections, temporary workstations, and short-term assignments. Portable gas detectors are typically worn by workers.

Fixed gas detectors are installed in a specific area to continuously monitor gas concentrations. Fixed gas detectors are often integrated with monitoring systems.

Mobile gas detectors are another type of gas detection device, a good fit between portable and fixed devices. They can be placed in a specific area for continuous monitoring, with standby times of over a month or even longer. After a project is completed, they can be easily removed and moved to the next project site.

Yes, you can use either a portable or fixed gas detector for natural gas testing. Industrial-grade natural gas detectors utilize high-performance industrial-grade catalytic combustion or infrared sensors, accurately detecting natural gas concentrations in the air in a fraction of a second, with rapid and sensitive alarm responses.

Natural gas is lighter than air, primarily composed of methane, and has a density approximately 0.65 to 0.72 times that of air.

When detecting combustible gases lighter than air (such as natural gas and coal gas), the detector should be positioned 1 to 2 meters above the source of release, with the horizontal distance to the source appropriately reduced to within 5 meters. This allows for rapid detection of combustible gases.

Sino-Inst specializes in the research and development, production and sales of gas detectors. We are committed to providing customers with efficient, accurate and reliable detection equipment. We provide portable mobile online gas detectors, hand-pushed mobile pump-suction gas detectors, point-type online gas detectors, fixed all-in-one gas detectors, high-temperature combustible gas detectors and other gas detectors to meet customers’ gas detection needs in different fields and scenarios.

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