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SAFETY


stability over time that, along with the catalytic bead support wire protecting the sensor from shock and increased toxicity resistance, decreases downtime and the frequency of sensor replacements. Monitoring oxygen levels is equally


as important as detecting combustible gases in mining environments. Breathing oxygen is absolutely necessary to human life. Moreover, it is critical that the gas detector is turned on and that oxygen levels are measured from ground level and during the descent into the mine in the lifts. MSA’s XCell O2


lead-free sensor


is well suited for demanding mining environments. It allows the Altair 4X to provide greater accuracy and repeatability during changing environmental conditions including pressure spikes, humidity and temperature fl uctuations. Carbon monoxide is the most


dangerous of all the toxic gases that occur in mines. It is almost always contained in the afterdamp, a toxic mixture of gases left in a mine following an explosion of coal dust or fi redamp. T e XCell range of sensors makes it possible to equip the Altair 4X with a CO/NO2


combination


sensor that not only detects deadly carbon monoxide but also the equally dangerous nitrogen dioxide, a gas often released in conjunction with carbon monoxide.


The presence of combustible gases is the main gas risk faced by miners in their daily work


T e detection of methane and carbon monoxide – as well as monitoring oxygen levels – is crucial to safety in mines, but measures must go much further. Some underground coal mines require the monitoring of increased levels of carbon dioxide resulting from oxygen displacement. MSA can off er the ideal tool for this – the Altair 5X multigas detector with fi eld-proven integral pump and equipped with a reliable and long- lasting infrared sensor.


Other gases to be detected T ere are also other, less frequent toxic gases that must be detected,


TOUGH YET SMART I


nnovative sensor technology is at the heart of the Altair 4X gas detector. With its 24- hour battery, it is as tough and functional as it looks. A rugged IP 67 housing (dust and waterproof) provides excellent durability, including


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the ability to withstand a 6m drop onto concrete. Additionally, the product provides an advanced safety feature with its optional glow- in-the-dark case, ideal for low-light conditions in mining applications. ●


particularly in ore and mineral mines, such as hydrogen sulphide, naturally occurring seam gas and sulphur dioxide produced by blasting operations. T ese can be measured by XCell sensors installed either in an Altair 4X or 5X if it is necessary to monitor up to six gases in one instrument. T e Altair 5X rugged housing


provides impressive durability and with large, glove-friendly buttons and an optional, high-contrast colour display, it is easy to operate in mining environments. Features such as MotionAlert and InstantAlert are standard on the Altair 5X as well as on the 4X, providing added user confi dence. Both detectors are an ideal choice, not only from a safety point of view but also when considering the total cost of ownership. Due to the harsh mining


environments in which miners need to use their equipment, using high- quality gas detectors with innovative and valuable features is key to safe operations. ●


For more information visit www.msasafety.com


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