Wearable Devices Used for Long Term Exposure Monitoring

What is Long Term Exposure Monitoring?

Long Term Exposure Monitoring is the act of monitoring a worker's exposure to hazardous airborne substances across their entire working schedule. For long-term exposure monitoring, the measurements are made using a Time-weighted Average (TWA) concentration in which samples of a worker's breathing zone are made over the entire workday and averaged. Exposure is measured against Threshold Limit Values (TLVs) and are often monitored in conjunction with Short Term Exposure Limits (STELs).

Benefits of Long Term Exposure Monitoring

Long term exposure limits are usually determined by governmental or regulatory bodies and often mandated. Benefits of actively monitoring hazardous exposure is improved employee health, and a reduction of lost-time injuries and occupational health lawsuits.

How Do the Following Wearables Provide Long Term Exposure Monitoring?

There are two leading methods of monitoring personal toxic gas exposure for industrial workers. The most accurate way is to provide workers with a personal toxic gas monitor, which monitors the air directly in the worker's vicinity at all times. An alternative approach is to provide workers with location tracking devices and mount fixed toxic gas monitors within the working environment where the threats are expected to occur, then combine the two data sources and monitor personal limits remotely using software.

Due to power requirements and technology constraints, most personal gas monitors on the market are relatively bulky and will not always be carried by all personnel that may be exposed to threats. However, personal toxic gas monitors come with the benefit of being more accurate and can alert the worker immediately when they have reached a limit. Alternatively fixed or wall-mounted sensors in combination with wearable location tracking devices are far more prevalent, affordable, and lightweight, but will require third-party software to combine the air-quality measurements with worker locations.

Related Workplace Applications

Employee Location Tracking, Short Term Exposure Monitoring & Occupational Health and Safety

Zebra Dart Tag

Worn on the Body (Anywhere) and used for Industrial applications.
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Leica Pegasus Backpack

Worn on the Torso and used for Industrial applications.
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Zebra WT6000 Wearable Computer

Worn on the Wrist and used for Industrial applications.
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Deloitte Smart Helmet

Worn on the Head and used for Industrial applications.
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