sensitivity is a particular concern . Super cially , a gas sensor might appear to the untrained eye to be no more than a simple small cylinder , 20mm in diameter and 17mm high , with two or three electrodes . In fact , nothing could be further from the truth . Such an unremarkable looking component is the operating heart of all gas detection equipment , which saves countless lives and prevents damage to property worth billions of dollars .
Oxygen Sensors Gas sensors are in fact complex pieces of equipment : 4OXV , the new oxygen sensor , is constructed from more than 20 individual components , which are manufactured to exceedingly tight tolerances and assembled to create the nished product on an automated assembly and test line . As an example of the technology behind the design of gas sensors , consider the 4OXV oxygen sensor that is used in portable gas detectors in mines . Humidity changes are another signi cant cause of false alarms . 4OXV features an integrated moisture protection membrane to prevent the ingress of humid air into the chamber . �e implications in the mining environment are self-evident .
Bump testing for personal gas detection equipment , in which the instrument is exposed to its target gas to check for correct operation , would normally take place on the surface . Descending in high speed li�s to the working levels will result in rapid increases in temperature and humidity , potentially causing the instrument to false alarm , with a consequent loss of time and con dence while the issue is sorted out . Instruments tted with 4OXV do not suffer from such issues , improving efficiency and reducing down time .
Carbon Monoxide Sensors “ Speed is of the essence ”. A truism applied to many different situations , but a statement that is arguably critical in mining life safety applications , where delay can literally prove to be fatal . Carbon monoxide , a colourless , odourless , tasteless , and initially nonirritating gas is very difficult for people to detect . Exposure to 100 ppm or greater can be dangerous to human health , and as the symptoms of mild exposure include lightheadedness and confusion , while larger exposures can lead to death , the provision of an effective CO detector is an imperative for personnel who may encounter it during the course of their work . CO is commonly found in mines , so a fast and effective CO detector is an essential piece of equipment .
�e Future Without doubt , today ' s sophisticated gas detection technology has saved many lives in what is still one of the world ' s most dangerous industries . Gas detection instrument manufacturers typically rely on gas sensors from specialist manufacturers . Typically b as e d on electro chemical technology , the characteristics of the gas sensor itself determine , to a great extent , the instrument ' s performance and reliability in use . To offer their users reduced lifetime cost of ownership , enhanced performance and features that improve the functionality , reliability and effectiveness of personal and xed gas detection , OEMs require the gas sensor manufacturers to innovate sensors that have better stability , greater resistance to cross-contamination , longer life and faster response .
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