Personal and Confined Space Gas Detectors

Personal and Confined Space Gas Detectors

Portable gas detectors or monitors play a vital role in workplace OHS gas detection programs. Used in a variety of different industries from mining to manufacturing, refineries, wastewater. HVAC and more, gas detectors are an essential battery operated personal protective equipment worn on the body designed to provide precise measurements of harmful gases and alert workers on-site when gas levels exceed safe levels. They can also alert the worker when oxygen level falls in confined working spaces.

Gas detectors are used for a diverse range of applications including leak detection, confined space entry, area monitoring, shutdowns, emergency response, occupational hygiene and more.

Whether you are monitoring for flammable, toxic, or combustible gases or even volatile organic compounds, Air-Met offers a range of portable single-gas and multi-gas toxic gas detectors in a range of configurations to suit your monitoring needs.

Single Gas and Multi Gas Detectors

Air-Met Scientific offers a range of reliable and rugged single and multi-gas monitors designed to suit a wide range of applications. Single gas monitors, as the name suggests, are for monitoring one gas in particular whereas multi gas detectors can display readings for up to six gases simultaneously. The type of portable gas detector you require can depend on the industry, e.g. governed by regulations or what is best suited for the person using it. For firefighters carbon monoxide is the most common gas present so a single gas detector that can alert on unsafe levels of CO would be useful. However, in large construction projects a multi gas detector provide greater safety coverage. Easy to use and designed with the latest in gas detection technology, our range of gas detectors can monitor for a variety of gases including

  • Methane (CH4
  • Ammonia (NH3
  • Carbon Monoxide (CO) 
  • Carbon Dioxide (CO2)
  • Hydrogen Sulphide (H2S) 
  • Nitrogen Dioxide (NO2
  • Oxygen (O2
  • Sulphur Dioxide (SO2
  • Hydrocarbons 

Our product range includes:

  • Industrial Scientific MX6 iBrid Six Gas Monitor: A versatile 6 gas monitor, the MX6 iBrid features hundreds of possible sensor combinations, powerful 95dB audible alarm, a full colour LCD display in a robust IP64 rated enclosure. The MX6 iBrid is also ANZEx certified. 
  • Industrial Scientific Ventis Pro5: Show real-time gas readings and respond quickly to man-down and panic alarms via Industrial Scientific’s live monitoring software with the Ventis Pro5’s wireless connectivity capability. 
  • Industrial Scientific Ventis MX4: A highly compact device the same size as single monitors, the Ventis MX4 has the capability to detect up to four gases eliminating the need for multiple monitors. Rugged, lightweight and easy to wear, the Ventis MX4 can operate up to 20 hours for non-pumped instruments for those extra-long shifts. 
  • Industrial Scientific GasBadge Pro: A feature packed single gas monitor, the GasBadge Pro can detect unsafe levels of a range of gases including oxygen, carbon monoxide, hydrogen sulphide, ammonia, phosphine and more. The GasBadge Pro is suitable for contractors and plumbers however a 4-gas monitor will be required for confined space entry. 
  • Industrial Scientific Tango TX1: A simple, low-cost maintenance free gas detector, the Tango TX1 is a single gas monitor with 2 year run time and offers a range of sensor options including CO, CO/H2 Low, H2S, NO2 and SO2.

With a wide range of configurations, options and accessories including docking stations and pumps, contact your local Air-Met Scientific office today at one of our six locations across Australia to discuss your gas monitoring needs with our teams of experts.

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Yes, Air-Met Scientific supplies a wide range of personal and confined space gas detectors for sale and rental. Our product range includes multi and single gas monitors that can simultaneously detect six different gases for a wider safety coverage to gas monitors which can detect just one gas. Contact your local Air-Met Rental office to discuss you gas detection hire needs. 

We recognise the critical need to minimise downtime and ensure the optimal performance of your equipment which is why we have established six service centres nationwide as well as a fleet of on-site service vehicles for added convenience. Our service technicians are dedicated to servicing, maintaining, and calibrating your gas detection equipment, ensuring it remains in top condition, keeping your team safe. Contact your local service office or click here to book a service.

According to the Australian Standard for Confined Spaces AS 2865-2009, a confined space is defined as:

An enclosed or partially enclosed space that is not designed or intended for continuous human occupancy and has:

  • Limited means of entry or exit; and 
  • Poor natural ventilation; and 
  • Is a risk of:
    • Asphyxiation due to an inadequate oxygen atmosphere;
    • Entrapment due to collapsing or flowing materials; or 
    • Poisoning due to airborne contaminants. 

The standard also clarifies that a confined space can be:

  • Totally enclosed: A space with no openings, such as a tank or silo. 
  • Partially enclosed: A space with limited openings, such as a pit or trench. 

It's important to note that not all enclosed spaces are considered confined spaces. For example, an office or a factory building would not be considered confined spaces because they are designed for continuous human occupancy and have adequate ventilation.

Confined space gas detectors or personal gas monitors are used by various professionals and industries where workers may be exposed to potentially hazardous atmospheres within confined spaces. Industries such as refineries, wastewater treatment plants, mines and manufacturing sites use these devices to continuously monitor hazardous gas levels within enclosed spaces for the presence of specific gases that may pose a threat to human health or safety.

These devices typically use various sensors to detect different types of gases,and when the concentration of a hazardous gas exceeds a preset threshold, the detector triggers an alarm to alert users of the potential danger. Common gas limits displayed on a personal gas monitor include:

  • Lower Explosive Limit (LEL) 
  • Upper Explosive Limit (UEL)
  • Short-Term Exposure Limits (STEL) 
  • Oxygen Monitoring.

Hazardous gases in confined space are commonly monitored using fixed gas detectors and personal gas monitors. Fixed gas detection provides continuous monitoring of a site while personal gas monitors are worn by workers to alert them of potential exposure to dangerous gases when working in confined spaces. Portable gas monitors are clipped onto a workers clothing and can provide real time data and alert workers on exceeding hazardous gas levels, whereas fixed gas monitors can provide a reading of ambient air inside a confined space and alert workers of unsafe levels of hazardous gas before they enter the enclosed space.

Yes, in Australia everyone needs a permit to enter confined spaces. The entry into confined spaces is regulated to ensure the safety of workers, as these spaces can present various hazards such as limited access, restricted movement, and potential atmospheric dangers. The permit system is designed to control and authorise entry into confined spaces, and it usually involves a careful assessment of the potential risks and the implementation of appropriate safety measures.

The permit to enter a confined space is typically issued after a thorough evaluation of factors such as the atmosphere inside the confined space, the nature of the work to be performed, and the availability of necessary safety equipment such as a confined space gas monitor. A confined space entry permit must be issued by a competent person and needs to state:

  • Identification of the specific space in question. 
  • Name of the authorised person entering the confined space. 
  • Scheduled timeframe for the work to be conducted. 
  • Comprehensive control measures addressing potential entry and work-related risks. 
  • A segment for the competent person's acknowledgment that all personnel have exited the confined space.

The Australian Standard for confined space, AS 2865-2009- Safe Working in a Confined Space, is jointly prepared by representatives of the National Occupational Health and Safety Commission (NOHSC) and the Standards Australia Committee. The Standard was passed to eliminate, or where possible, minimise the need for workers to enter confined spaces. It emphasises the organisation’s responsibilities whilst also covering the requirements and risk controls for managing work in confined spaces. AS 2865-2009 applies to anyone entering such spaces for any purpose, including maintenance, cleaning, inspection, or other reasons. The AS 2865-2001 is just one element of confined space safety in Australia.

Businesses should also be aware of relevant Work Health and Safety (WHS) regulations and codes of practice in their state or territory.

In Australia, workplace exposure standards for gases (and other hazardous substances) are set by Safe Work Australia. These standards outline the maximum allowable airborne concentrations of hazardous substances in the workplace to protect the health and safety of workers. The specific workplace exposure standards for gases can vary depending on the type of gas and its potential health effects.

For the most accurate and up-to-date information on workplace exposure standards for gases in Australia, it's recommended to consult the Safe Work Australia website or directly refer to the latest edition of the "Workplace exposure standards for airborne contaminants" publication. This publication provides detailed information on exposure standards for various gases, vapours, dusts, fumes, and other airborne contaminants commonly found in workplaces.

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Gas monitors are essential lifesaving device designed to keep your site and your team safe. Your peace of mind begins with the unparalleled quality of service that only our Industrial Scientific trained service technicians and genuine Industrial Scientific parts can provide. Proudly distributing and servicing Industrial Scientific gas monitoring solutions since 2002, our service technicians only utilise genuine Industrial Scientific parts during maintenance, guaranteeing the authenticity and reliability of every component, safeguarding product warranty and ensuring optimal performance and accuracy.

Contact our network of service centres today to book a service.