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City Technology launches 4OxLL oxygen sensor

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World Coal,

City Technology, a leading manufacturer of gas sensors and a part of Honeywell International, will unveil a new addition to its gas sensing range – the 4OxLL long-life oxygen sensor – at QME 2014.

Protecting workers in underground mines from oxygen depletion and the hazards of toxic and flammable gases is a continuous challenge. Companies must not only maximise safety and adhere to stringent regulations, they must also leverage operational cost efficiencies, while ensuring their people and assets are protected. Selecting the right gas sensing solution is an intrinsic aspect of fulfilling this remit.

The new AN/NZS 4641 compliant 4OxLL “redefines oxygen sensing for mining applications”, according to the company, “with unsurpassed stability in challenging environmental conditions, minimised nuisance alarms and extended operational life.”

One of the key drivers of the launch in Australia is improving the reliability of gas detectors in underground mines, while reducing cost of ownership, according to ?Mario Moura, Marketing Director for Honeywell Life Safety: “Mining applications represent some of the most challenging environments for portable gas detectors. Temperature and relative humidity can fluctuate dramatically as workers move from external locations into hot and humid mining environments, and pressure shocks can occur during mine shaft lift descent – sometimes resulting in incorrect oxygen readings. These aspects can make nuisance alarms a prevalent and costly issue.”

“A portable gas detector is only as good as the sensors it contains,” continued Moura. “The serious safety concerns created by the abundance of flammable and toxic gases and the depletion oxygen in underground mines means only the highest performing sensors can be used.”

The 4OxLL oxygen sensor is the result of more than 35 years’ experience serving the mining industry for City Technology. It incorporates patented electrochemical cell (ECC) internal geometry – designed using Six Sigma and FEM modelling practices and manufactured to exacting standards – which helps to eliminate occurrences of nuisance alarms or sensor damage.

“Aside from enhancing safety and ensuring maximized device uptime, the 4OxLL can also dramatically reduce ongoing costs,” Moura concluded. “Designed as a five year solution, this sensor lasts as long as the operational life of a typical portable gas detector. [In contrast,] most oxygen sensors last approximately 2 years. This longevity reduces maintenance costs considerably, with no need for sensor change out and its patented design helps to extend calibration intervals, delivering further cost reductions.

Written by City Technology. Edited by

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