Portable Voc Gas Detector

The Portable Voc Gas Detector is a mobile, rapid-detection, multi-functional gas detector and alarm. It can be equipped with temperature and humidity measurement functions. The types of gases it can detect can be configured in multiple ways to meet customer needs.

This portable diffusion-type VOCs gas alarm is suitable for applications requiring rapid detection of VOCs gas concentration, temperature and humidity measurement, and alarming when levels exceed limits. It can detect gas concentrations in pipelines, confined spaces, and atmospheric environments. It can detect gas leaks or high concentrations of a single gas with a background gas of nitrogen or oxygen.

The Portable Voc Gas Detector is widely applicable in industries such as spray painting, leather manufacturing, petrochemical plants, printing, wastewater/garbage treatment plants, gas station leaks, biomass, coal combustion, semiconductor industry, and metallurgical industry.

★★★★★

  • Short delivery time
  • Better price
  • Customizable parameters

Features

★ VOCs gas detection; multiple gases can be configured according to customer requirements. Units are freely switchable; selectable units include: PPM, mg/m3, Vol%, LEL%, PPHM, ppb, mg/L.

★ Diffusivity measurement

The gas sensor’s main detection principles include: electrochemical, infrared, catalytic combustion, thermal conductivity, and PID photoionization. Advanced circuit design, mature core algorithm processing, and unique appearance design have resulted in multiple software copyright and design patents.

★ Rich human-machine interface

A 2.31-inch high-definition color screen displays real-time concentration, alarm, time, temperature, humidity, storage, communication, battery level, charging status, concentration unit, gas molecular formula, and gas name; the menu interface uses high-definition simulated graphics to display the function names of each menu item.

★Large-capacity data storage, supporting multiple storage methods

  • Standard configuration: 100,000 data storage records; larger capacity available upon customization.
  • Supports real-time storage, timed storage, or storage of only alarm concentration data and time.
  • Supports local viewing and deletion of data.
  • Data can also be uploaded to a computer via USB interface for analysis, storage, and printing using host computer software.
  • Optional RS485 communication.

★Three switchable display modes

  • Simultaneously displays four gas concentrations, cycles through the concentration of a single channel gas, and displays real-time curves.
  • Automatic or manual cycling between channels is switchable.
  • Can be configured to display maximum, minimum, and gas names.
  • Historical data curves can be viewed.

★Graphical display

Reflects the trend of gas concentration changes over a period of time in curve form.

★Data recovery function

Partial or complete data recovery is available, eliminating concerns about accidental data loss.

★Can be configured to display maximum, minimum, and average values.

★USB charging port with charging protection function; supports USB hot-plugging.

Chargeable via computer or power bank, compatible with mobile phone chargers; Overcharge, over-discharge, overvoltage, short circuit, and overheat protection; 5-level accurate power display; The instrument can operate normally while charging.

★ Employs a 2100mA high-capacity rechargeable polymer battery for extended continuous operation.

★ High-precision temperature and humidity measurement (optional)

Simultaneously compensates for sensor temperature; instrument operating temperature range -40～70 degrees Celsius.

★ Supports real-time or timed detection.

The pump can be turned off when not in use to extend operating time.

★ Multiple alarm modes with multi-directional 3D alarm status indication.

  • Includes audible and visual alarms, vibration alarms, and visual alarms.
  • Alarm types include: concentration alarm, undervoltage alarm, and fault alarm.

★ Adjustable alarm values ​​and multiple alarm mode settings:

Low alarm, high alarm, range alarm, and weighted average alarm.

★ Misoperation detection function: Automatically identifies and prevents misoperation during concentration calibration, avoiding errors caused by human factors.

★ Automatic zero-point tracking: Unaffected by zero-point drift during long-term use.

★ Multi-level target point calibration: Ensures measurement linearity and accuracy, meeting both national and local metrology bureau standards.

★ Log recording: Records calibration logs, maintenance logs, and troubleshooting strategies. Includes sensor lifespan expiration reminders and next concentration calibration reminders.

★ Meets intrinsically safe circuit design requirements, anti-static, anti-electromagnetic interference, and has passed national standard testing and CMC metrology instrument production license certification.

★ IP65 protection rating: Splash-proof, dustproof, explosion-proof, and shockproof.

Portable Voc Gas Detector Structure

Specifications

Detected gasVOCs (parameters can be customized, and other gases can also be customized; see the gas table);
Optional: Can detect the concentration and temperature/humidity of any 1-4 gases.
range and resolutionVOC: 0-100ppm, 0.01ppm, imported high-precision electrochemical sensor;
or VOC: 0-100%LEL, 0.1%LEL, industrial-grade catalytic combustion sensor;
or VOC: 0-10ppm, 0.01ppm, imported high-precision PID photoionization sensor;
Other ranges, principles, and resolutions can be customized.
Detection MethodDiffusion-type measurement, with optional sampling handle (external handheld sampling pump)
Display Method2. 31-inch 320*240 high-definition color screen display, 4-button operation
Detection Accuracy≤±3%F.S (Higher accuracy can be customized)
Linearity≤±2%Repeatability≤±2%
Alarm MethodAudible and visual alarm, vibration alarm, visual alarm, audible and visual alarm + vibration + visual alarm, and alarm off are all available.
Response TimeT90≤30 secondsRecovery time≤30 seconds
Operating Power SupplyDC3.7V
Battery Capacity3.7VDC, 2100mA high-capacity rechargeable polymer battery with overcharge/over-discharge/overvoltage/overheat/short circuit protection;
Operating EnvironmentTemperature: -40℃~+70℃; Relative humidity: ≤0-99%RH (built-in filter allows use in high humidity or high dust environments);
Sample Gas Temperature-40℃~+70℃, with optional high-temperature sampling cooling filter handle, capable of detecting flue gas concentration at 400 degrees or higher;
Temperature Measurement (Optional)-40℃ to +70℃, accuracy ±0.5℃Humidity measurement (optional)0~100%RH, accuracy ±3%RH
Data StorageStandard configuration includes 100,000 data entries, supporting local viewing, deletion, and data export; storage interval can be set arbitrarily.
Communication InterfaceUSB (charging and communication), optional RS485 or RS232 communication interface
Interface LanguageThe interface can be set to English.
Explosion-proof TypeIntrinsically safe ExiaⅡCT4GaExplosion-proof certificate number: CnEx16.3092
Protection RatingIP65, dustproof and splashproof.
Dimensions130×68×34mm(L×W×H)weight200g
Standard AccessoriesInstruction manual, certificate of conformity, USB charger (including data cable), back clip
Color packaging box (optional high-grade aluminum alloy instrument case <additional charge>)
Optional AccessoriesTemperature and humidity measurement function, CD (host computer communication software)
ApplicationsSuitable for spraying, leather, petrochemical plants, printing, sewage/garbage treatment plants, gas station leaks, biomass, coal-fired, semiconductor industry, metallurgical industry, and other places.

Commonly detected gases

Gases DetectedRange
(Other ranges available upon request)    		Accuracy
(Higher accuracy available upon request)    		Resolution
(Higher resolution available upon request)    		Response time
Combustible gas (EX)0-100%LEL＜±3%(F.S)0.1%LEL≤10S
Combustible gas (EX)0-100%Vol＜±3%(F.S)0.1%Vol≤10S
Methane (CH4)0-100%LEL＜±3%(F.S)0.1%LEL≤5S
Methane (CH4)0-100%Vol＜±3%(F.S)0.1%Vol≤10S
Oxygen (O2)0-30%Vol＜±3%(F.S)0.01%Vol≤15S
Oxygen (O2)0-100%Vol＜±3%(F.S)0.01%Vol≤15S
Oxygen (O2)0-1000ppm＜±3%(F.S)1ppm≤20S
Oxygen (O2)0-50000ppm＜±3%(F.S)1ppm≤20S
Carbon monoxide (CO)0-500ppm＜±3%(F.S)0.1ppm≤20S
Carbon monoxide (CO)0-1000ppm＜±3%(F.S)0.1ppm≤20S
Carbon monoxide (CO)0-2000ppm＜±3%(F.S)0.1ppm≤20S
Carbon monoxide (CO)0-20000ppm＜±3%(F.S)1ppm≤20S
Carbon monoxide (CO)0-100000ppm＜±3%(F.S)1ppm≤20S
Carbon dioxide (CO₂)0-2000ppm＜±3%(F.S)1ppm≤20S
Carbon dioxide (CO₂)0-5000ppm＜±3%(F.S)1ppm≤20S
Carbon dioxide (CO₂)0-10000ppm＜±3%(F.S)1ppm≤20S
Carbon dioxide (CO₂)0-50000ppm＜±3%(F.S)1ppm≤20S
Carbon dioxide (CO₂)0-20%Vol＜±3%(F.S)0.01%Vol≤20S
Carbon dioxide (CO₂)0-50%Vol＜±3%(F.S)0.01%Vol≤20S
Carbon dioxide (CO₂)0-100%Vol＜±3%(F.S)0.01%Vol≤20S
Formaldehyde (CH₂O)0-10ppm＜±3%(F.S)0.001ppm≤20S
Formaldehyde (CH₂O)0-50ppm＜±3%(F.S)0.01ppm≤20S
Formaldehyde (CH₂O)0-1000ppm＜±3%(F.S)0.1ppm≤20S
Ozone (O₃)0-1ppm＜±3%(F.S)0.001ppm≤20S
Ozone (O₃)0-10ppm＜±3%(F.S)0.01ppm≤20S
Ozone (O₃)0-50ppm＜±3%(F.S)0.01ppm≤20S
Ozone (O₃)0-100ppm＜±3%(F.S)0.01ppm≤20S
Ozone (O₃)0-2000ppm＜±3%(F.S)0.1ppm≤20S
Hydrogen sulfide (H₂S)0-10ppm＜±3%(F.S)0.001ppm≤20S
Hydrogen sulfide (H₂S)0-50ppm＜±3%(F.S)0.01ppm≤20S
Hydrogen sulfide (H₂S)0-100ppm＜±3%(F.S)0.01ppm≤20S
Hydrogen sulfide (H₂S)0-200ppm＜±3%(F.S)0.1ppm≤20S
Hydrogen sulfide (H₂S)0-2000ppm＜±3%(F.S)0.1ppm≤20S
Sulfur dioxide (SO₂)0-10ppm＜±3%(F.S)0.001ppm≤20S
Sulfur dioxide (SO₂)0-20ppm＜±3%(F.S)0.01ppm≤20S
Sulfur dioxide (SO₂)0-100ppm＜±3%(F.S)0.01ppm≤20S
Sulfur dioxide (SO₂)0-500ppm＜±3%(F.S)0.1ppm≤20S
Sulfur dioxide (SO₂)0-2000ppm＜±3%(F.S)0.1ppm≤20S  
Sulfur dioxide (SO₂)0-5000ppm＜±3%(F.S)0.1ppm≤20S
Nitrogen monoxide (NO)0-20ppm＜±3%(F.S)0.01ppm≤20S
Nitrogen monoxide (NO)0-100ppm＜±3%(F.S)0.01ppm≤20S
Nitrogen monoxide (NO)0-2000ppm＜±3%(F.S)0.1ppm≤20S
Nitrogen Dioxide (NO₂)0-20ppm＜±3%(F.S)0.01ppm≤20S
Nitrogen Dioxide (NO₂)0-200ppm＜±3%(F.S)0.1ppm≤20S
Nitrogen Dioxide (NO₂)0-1000ppm＜±3%(F.S)0.1ppm≤20S
Nitrogen Dioxide (NO₂)0-5000ppm＜±3%(F.S)0.1ppm≤20S
Chlorine Gas (Cl₂)0-10ppm＜±3%(F.S)0.001ppm≤20S
Chlorine Gas (Cl₂)0-20ppm＜±3%(F.S)0.01ppm≤20S
Chlorine Gas (Cl₂)0-200ppm＜±3%(F.S)0.1ppm≤20S
Ammonia Gas (NH₃)0-50ppm＜±3%(F.S)0.01ppm≤20S
Ammonia Gas (NH₃)0-100ppm＜±3%(F.S)0.01ppm≤20S
Ammonia Gas (NH₃)0-1000ppm＜±3%(F.S)0.1ppm≤20S
Ammonia Gas (NH₃)0-5000ppm＜±3%(F.S)0.1ppm≤20S
Ammonia (NH₃)0-100%LEL＜±3%(F.S)0.1%LEL≤20S
Hydrogen (H₂)0-100%LEL＜±3%(F.S)0.1%LEL≤20S
Hydrogen (H₂)0-1000ppm＜±3%(F.S)0.1ppm≤20S
Hydrogen (H₂)0-20000ppm＜±3%(F.S)1ppm≤20S
Hydrogen (H₂)0-40000ppm＜±3%(F.S)1ppm≤20S
Hydrogen (H₂)0-100%Vol＜±3%(F.S)0.1%Vol≤20S
Hydrogen Cyanide (HCN)0-30ppm＜±3%(F.S)0.01ppm≤20S
Hydrogen Cyanide (HCN)0-100ppm＜±3%(F.S)0.01ppm≤20S
Hydrogen Chloride (HCl)0-20ppm＜±3%(F.S)0.01ppm≤20S
Hydrogen Chloride (HCl)0-200ppm＜±3%(F.S)0.1ppm≤20S
Phosphine (PH₃)0-5 ppm＜±3%(F.S)0.001ppm≤20S
Phosphine (PH₃)0-20 ppm＜±3%(F.S)0.01ppm≤20S
Phosphine (PH₃)0-2000 ppm＜±3%(F.S)0.1ppm≤20S
Chlorine Dioxide (ClO₂)0-1ppm＜±3%(F.S)0.001ppm≤20S
Chlorine Dioxide (ClO₂)0-10ppm＜±3%(F.S)0.01ppm≤20S
Chlorine Dioxide (ClO₂)0-100ppm＜±3%(F.S)0.01ppm≤20S
Ethylene Oxide (ETO)0-100ppm＜±3%(F.S)0.01ppm≤20S
Ethylene Oxide (ETO)0-1000ppm＜±3%(F.S)0.1ppm≤20S
Ethylene Oxide (ETO)0-100%LEL＜±3%(F.S)1%LEL≤20S
Phosgene (COCl₂)0-1ppm＜±3%(F.S)0.001ppm≤20S
Silane (SiH4)0-1ppm＜±3%(F.S)0.001ppm≤20S
Silane (SiH4)0-50ppm＜±3%(F.S)0.01ppm≤20S
Fluorine gas (F2)0-1ppm＜±3%(F.S)0.001ppm≤20S
Fluorine gas (F2)0-10ppm＜±3%(F.S)0.01ppm≤20S
Fluorine gas (F2)0-100ppm＜±3%(F.S)0.01ppm≤20S
Hydrogen fluoride (HF)0-10ppm＜±3%(F.S)0.01ppm≤20S
Hydrogen fluoride (HF)0-50ppm＜±3%(F.S)0.01ppm≤20S
Hydrogen bromide (HBr)0-50ppm＜±3%(F.S)0.01ppm≤20S
Boron hydride (B2H6)0-10ppm＜±3%(F.S)0.001ppm≤20S
Arsenic hydride (AsH3)0-1ppm＜±3%(F.S)0.001ppm≤20S
Arsenic Hydride (AsH₃)0-10ppm＜±3%(F.S)0.001ppm≤20S
Arsenic Hydride (AsH₃)0-10ppm＜±3%(F.S)0.01ppm≤20S
Germanium Hydride (GeH₄)0-2ppm＜±3%(F.S)0.001ppm≤20S
Germanium Hydride (GeH₄)0-20ppm＜±3%(F.S)0.01ppm≤20S
Hydrazine (N₂H₄)0-1ppm＜±3%(F.S)0.001ppm≤20S
Hydrazine (N₂H₄)0-300ppm＜±3%(F.S)0.1ppm≤20S
Tetrahydrothiophene (THT)0-50mg/m3＜±3%(F.S)0.01 mg/m3≤20S
Bromine Gas (Br₂)0-10ppm＜±3%(F.S)0.001ppm≤20S
Bromine Gas (Br₂)0-50ppm＜±3%(F.S)0.01ppm≤20S
Acetylene (C₂H₂)0-100%LEL＜±3%(F.S)0.1%LEL≤20S
Acetylene (C₂H₂)0-100ppm＜±3%(F.S)0.01ppm≤20S
Acetylene (C₂H₂)0-1000ppm＜±3%(F.S)0.1ppm≤20S
Ethylene (C₂H₄)0-100%LEL＜±3%(F.S)0.1%LEL≤20S
Ethylene (C₂H₄)0-100ppm＜±3%(F.S)0.01ppm≤20S
Ethylene (C₂H₄)0-1000ppm＜±3%(F.S)0.1ppm≤20S
Acetaldehyde0-10ppm＜±3%(F.S)0.01ppm≤20S
Ethanol (C₂H₆O)0-100%LEL＜±3%(F.S)0.1%LEL≤20S
Ethanol (C₂H₆O)0-100ppm＜±3%(F.S)0.01ppm≤60S
Ethanol (C₂H₆O)0-2000ppm＜±3%(F.S)0.1ppm≤20S
Methanol (CH₄O)0-100%LEL＜±3%(F.S)0.1%LEL≤20S
Methanol (CH₄O)0-100ppm＜±3%(F.S)0.01ppm≤20S
Methanol (CH₄O)0-2000ppm＜±3%(F.S)0.1ppm≤20S
Carbon disulfide (CS₂)0-50ppm＜±3%(F.S)0.01ppm≤20S
Acrylonitrile0-50ppm＜±3%(F.S)0.01ppm≤20S
Acrylonitrile0-100ppm＜±3%(F.S)0.01ppm≤20S
Acrylonitrile0-2000ppm＜±3%(F.S)0.1ppm≤20S
Methylamine0-50ppm＜±3%(F.S)0.01ppm≤20S
Nitrogen gas (N₂)0-100%Vol＜±3%(F.S)0.01%Vol≤20S
Iodine gas (I₂)0-50ppm＜±3%(F.S)0.01ppm≤20S
Nitrogen oxides (NO_x)0-100ppm＜±3%(F.S)0.01ppm≤20S
Nitrogen oxides (NO_x)0-5000ppm＜±3%(F.S)0.1ppm≤20S
Benzene (C6H6)0-200ppm＜±3%(F.S)0.1ppm≤20S
Toluene (C7H8)0-200ppm＜±3%(F.S)0.1ppm≤20S
Xylene (C8H10)0-200ppm＜±3%(F.S)0.1ppm≤20S
Styrene (C8H8)0-200ppm＜±3%(F.S)0.1ppm≤20S
Styrene (C8H8)0-5000ppm＜±3%(F.S)0.1ppm≤20S
Vinyl Chloride (C2H3Cl)0-200ppm＜±3%(F.S)0.1ppm≤20S
Trichloroethylene (C2HCl3)0-200ppm＜±3%(F.S)0.1ppm≤20S
Tetrachloroethylene (C2Cl4)0-200ppm＜±3%(F.S)0.1ppm≤20S
Methyl Bromide (CH₃Br)0-200ppm＜±3%(F.S)0.1ppm≤20S
Sulphuryl Fluoride (SO₂F₂)0-200ppm＜±3%(F.S)0.1ppm≤20S
Helium (He)0-10%Vol＜±3%(F.S)0.01%vol;0.001%vol≤20S
Helium (He)0-50%vol＜±3%(F.S)0.01%vol;0.001%vol≤20S
Helium (He)0-100%vol＜±3%(F.S)0.01%vol;0.001%vol≤20S
VOC/ TVOC0-10ppm＜±3%(F.S)0.01ppm≤30S
VOC/ TVOC0-100ppm＜±3%(F.S)0.1ppm≤30S
VOC/ TVOC0-1000ppm＜±3%(F.S)1ppm≤30S
VOC/ TVOC0-10000ppm＜±3%(F.S)1ppm≤30S

Note: For other gases not listed above, please call for consultation.

Technical Support

VOC, or Volatile Organic Compounds, refers to organic chemical substances that readily evaporate at room temperature. The VOCs family is vast, including but not limited to alkanes, aromatics, alkenes, halogenated hydrocarbons, esters, alcohols, and ketones. Common VOCs in daily life include benzene, toluene, xylene, ethylbenzene, formaldehyde, and acetaldehyde, each with different chemical properties and potential hazards.

VOC detection is the detection of volatile organic compounds (VOCs), primarily used to assess air quality and environmental pollution.

VOC detectors and the materials and gases they utilize typically vary based on specific detection methods and application requirements. It is impossible to definitively state that any single VOC gas detector is the best. Below is an overview of commonly used VOC detectors:

Photoionization Detector (PID): Commonly used for detecting low-concentration VOCs, offering rapid response times. Suitable for environmental air quality monitoring, industrial process control, and similar applications.

Gas Chromatograph (GC): Separates and analyzes various VOCs within a sample. Often coupled with mass spectrometry (GC-MS) for qualitative and quantitative analysis, making it ideal for high-precision laboratory testing.

Non-Dispersive Infrared Analyzer (NDIR): Detects VOCs by measuring infrared absorption at specific wavelengths. Suitable for detecting specific VOCs such as methane and benzene.

Thermal Desorption Instrument: Typically used in conjunction with gas chromatography to extract and analyze VOCs from solid or liquid samples.

Electrochemical Sensor: Used for detecting specific VOC gases. Generally lower in cost with high precision.

VOCs have a wide range of sources, mainly including the following:

Outdoor sources: Fuel combustion and transportation are the main outdoor sources of VOCs.

Indoor sources: Coal and natural gas combustion products, smoking, heating and cooking fumes, as well as building decoration materials, furniture, household appliances, cleaning agents, and human emissions.

Industry sources:

  • Tobacco industry: Inks, organic solvents;
  • Textile industry: Glues used in footwear;
  • Toy industry: Correction fluid, scented toys;
  • Furniture and decoration materials: Paints, varnishes, adhesives;
  • Automotive parts materials: Glues, paints;
  • Electronics and electrical industry: VOCs used at high temperatures, cleaning solvents;
  • Others: Detergents, cleaning agents, fabric softeners, cosmetics, office supplies, wallpaper, etc.

The main detection principles of VOC detectors include electrochemical, infrared, catalytic combustion, thermal conductivity, and PID photoionization. Among these, PID photoionization is the most widely used.

PID uses an ion lamp to generate ultraviolet light to irradiate the target gas. When the gas absorbs sufficient ultraviolet light energy, it is ionized.

By measuring the minute current generated after the gas ionization, the detector can accurately detect the concentration of the target gas. This principle gives the instrument a fast response and high sensitivity.

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Portable VOC Gas Detectors are primarily used to measure toxic and harmful organic VOC gases in hazardous or industrial environments. They can be used alone or in conjunction with other devices for real-time online monitoring.

In chemical, pharmaceutical, and printing production processes, VOC emissions are a significant environmental issue. By using this instrument, companies can monitor VOC concentrations in real time during production, enabling them to take appropriate measures to reduce emissions and protect the environment. Furthermore, Portable VOC Gas Detectors can also be applied to indoor air quality monitoring, waste gas treatment, and leak detection, providing safety assurance for people’s production and daily lives.

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