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Portable Gas Detection

Portable Gas Detection

Portable Gas Detection

Found in a variety of industries from mining to waste management, portable gas detectors are classed as a type of Personal Protective Equipment (PPE) as they are designed to protect and alert personnel from hazardous gases in the area by displaying real-time gas levels of a variety of toxic, combustible, flammable gases and volatile organic compounds (VOCs).

Air-Met’s range of personal gas detection equipment is lightweight and portable and are designed to be clipped to a belt, used with a carrying case or hand-held to allow continuous monitoring of the user’s breathing zone. Air-Met’s range of portable gas monitoring solutions also includes area gas monitors such as the Industrial Scientific BZ1 Area Gas Monitor.

Gas Detectors and Leak Detectors

Ideal for confined space monitoring, spot leak testing, perimeter gas monitoring, Air-Met offers a range of gas monitoring instruments, calibration gases and accessories required to protect your workers on-site from hazardous gases.

Our product range includes:

  • Single Gas Detectors: cost-effective, easy to use, lightweight monitors designed to detect a specific gas.
  • Multi-Gas Monitors: available in a range of gas configurations, our multi-gas monitors can detect a range of toxic, flammable, and combustible gases therefore providing real-time visibility into the status and safety of the area. Monitors such as the Ventis Pro5 Confined Space Multi-Gas Monitor can detect up to four gases across a range of industrial settings. It also eliminates the need for multiple devices as it offers a variety of sensor configuration options.
  • Docking Stations: automated systems designed to charge and maintain a gas detector as well as provide a record-keeping solution.
  • Gas Detection Management Software: a fleet management software that provides unparalleled visibility into your gas detection program remotely with one simple dashboard.
  • Photoionisation Detectors (PIDs): most commonly used for on-site detection of volatile organic compounds (VOCs) at the parts-per-million (ppm) level.
  • Landfill Gas Analysers: engineered for the monitoring and analysing of a range of harmful gases such as methane, carbon dioxide, hydrogen sulphide and more in contaminated land sites and landfills.
  • Leak Detectors: designed for the detection and pinpoint localisation of gas leaks like helium and SF6.
  • Portable Area Gas Monitors: Available for sale or rental, Air-Met’s range of portable area gas monitors are ideal for use in perimeter monitoring, fence line monitoring and more.
  • Portable Mercury Analysers: Exposure to mercury, even in small amounts can lead to a range of health problems including nausea, shortness of breath, vomiting and more. Our range of mercury analysers can assist in rapid and accurate detection of mercury vapour in ambient air
  • Gas Detection Tubes: a cost-effective and easy to use method of testing for a variety of gases. Detector tubes measure the concentration of specific gases present in the air and in most cases the concentrate can be read directly off the measurement scale on each tube.

At Air-Met Scientific, we offer a complete and comprehensive range of gas detection solutions, calibration gases and accessories to meet your gas detection program requirements. Contact one of our six locations across Australia to discuss your needs with our experienced team.





Portable Gas Detection Frequently Asked Questions

Here are some FAQs on portable gas detectors. Can’t find the answers here? Get in touch with your local Air-Met Scientific office and our team will be happy to help.

Get in Touch

Yes, Air-Met Scientific offers a range of portable gas detection equipment for short and long-term hire, including single-gas and multi-gas detectors, with a variety of sensors to detect different gases. Interested in renting a gas detector? Contact your local Air-Met Scientific Rental office to discuss your monitoring requirements. Air-Met Scientific have rental offices in most major cities including Melbourne, Sydney, Brisbane, Mackay, Perth and Adelaide.

Yes, Air-Met Scientific provides confined space gas detection kit rentals for use in a variety of applications. These kits typically include a multi-gas detector such as the Industrial Scientific Ventis MX4 with sensors for measuring the concentration of several gases, including oxygen, carbon monoxide, hydrogen sulphide, and flammable gases. Contact your local Air-Met Rental office to learn more.

Yes, Air-Met Scientific provides service and calibration for a wide range of gas detectors and other environmental and occupational monitoring equipment. They have service centres located in major cities throughout Australia, and their team of qualified technicians is trained to service, repair, and calibrate gas detectors to ensure that they are functioning correctly and providing accurate readings. On-site service support is also available for gas monitors and can be particularly beneficial for industries where equipment downtime can be costly or where regular monitoring is required. Contact your local service team to book an on-site visit.

LEL stands for Lower Explosive Limit in gas detection. The Lower Explosive Limit is the lowest concentration of a gas or vapour that can ignite or explode in the presence of an ignition source. The LEL is expressed as a percentage of the gas or vapour in air. For example, the LEL of methane is 5%, which means that if the concentration of methane in the air is below 5%, it is not flammable, but if it exceeds 5%, it can ignite if there is a source of ignition such as a spark or flame.

LEL is an important parameter to monitor in industrial settings where flammable gases or vapours may be present, such as in petrochemical plants, refineries, and natural gas processing facilities. Gas detectors that measure LEL are designed to provide an early warning of potentially hazardous conditions, allowing workers to take appropriate safety measures, such as shutting down equipment or evacuating the area.

A portable gas monitor can be used to monitor the concentration of a wide range of gases, depending on the sensors installed in the device. Some common gases that can be monitored using a portable gas monitor include:

  • Oxygen (O2): Portable gas monitors can detect the level of oxygen in the air to ensure that workers are operating in a safe environment. Low levels of oxygen can be a sign of an oxygen-deficient environment or an enclosed space that is not well-ventilated. 
  • Carbon monoxide (CO): CO is a toxic gas that is produced by the incomplete combustion of fuels such as gas, oil, and wood. Portable gas monitors can detect CO in the air, which is essential to protect workers in industrial settings, and other indoor environments. 
  • Hydrogen sulphide (H2S): H2S is a highly toxic gas that is commonly found in natural gas and petroleum products. Portable gas monitors can detect H2S in the air, which is essential for workers in the oil and gas industry, wastewater treatment plants, and other industries where H2S can be present. 
  • Flammable gases: Portable gas monitors can detect the presence of flammable gases, including methane, propane, and butane, which can be a fire and explosion hazard in certain industrial settings. 
  • Volatile Organic Compounds (VOCs): Portable gas monitors can detect VOCs, which are organic chemicals that can be released into the air from certain products or processes. VOCs can have both short- and long-term health effects and can also contribute to air pollution. 

Other gases that can be monitored using a portable gas monitor include nitrogen dioxide (NO2), sulphur dioxide (SO2), chlorine (Cl2), and ammonia (NH3), among others.

A portable 4 gas monitor is a device designed to detect the presence of four common gases in the environment. The standard configuration for a portable 4 gas monitor typically includes sensors for measuring the concentration of:

  • Oxygen (O2) 
  • Flammable gases (LEL)
  • Carbon monoxide (CO) Hydrogen sulphide 
  • (H2S) 

The standard configuration of a portable 4 gas monitor may vary slightly depending on the manufacturer and model, but typically includes these four sensors. Some models may also include additional sensors for detecting other gases such as nitrogen dioxide (NO2), chlorine (Cl2), and sulphur dioxide (SO2).