Multigas DetectorWith MSA XCell™ Sensor TechnologyFrequently Asked Questions The ALTAIR® 4X Multigas Detector uses the NEW MSA XCell In recent years MSA has developed its own sensor ASIC. This chip1 Sensors. Aren’t all electrochemical and catalytic beadsensors basically the same? contains a microprocessor, all circuits to drive and compensate the sensor, and a digital signal converter.All sensors are not the same. Sensors are the heart of an instrument; Every MSA XCell Sensor contains an ASIC. This chip is much moresensor performance can vary greatly depending upon manufacturer. than a smart sensor; digital XCell Sensors perform real-timeMost multigas detectors use the same sensors from the same few environmental corrections and provide plug-and-play capabilities,global suppliers. MSA has designed a superior gas detection sensor greater RF immunity, and a higher overall performance level. Dueplatform specifically optimized for MSA gas detectors. MSA XCell to digital output, this sensor is not backwards-compatible withSensors are designed for longer life, faster response, and higher older MSA instruments, but instead establishes MSA’s futureperformance when used with MSA’s ALTAIR 4X Multigas product platform.Detector.MSA has designed and manufactured gas detection Historically, oxygen (O2) sensorsensors and instruments for decades. Our expertsare there to support you with any product or 3 technology is seen as a weak link and the first to die in every instrument.application concerns, allowing you to How does MSA’s XCell O2 Sensorfocus on your core business. actually achieve a typical lifespan of more than four- years? I read that every MSA2 XCell Sensor is built withan embedded application Most O2 sensors on the market today use aspecific integrated circuit consumable chemical(ASIC). What is an ASIC and why reaction where a piece of lead isis it important? consumed and converted to lead oxide. These sensors have aAn ASIC is a microchip specifically very finite life. Once enoughdesigned for one application. lead is gone, the sensor stopsASICs are most commonly working.associated with consumerelectronics that have been greatly The MSA XCell O2 Sensor uses areduced in size over the years (i.e. non-consumable chemicalcellular phones). In ASIC reaction. O2 is converted todevelopment a complete water and then back to O2. Theelectronic circuit with multiple sensor does not “use itself up”larger components is reduced to each time it sees O2, generating aone tiny microchip dedicated to a much longer shelf-life andspecific purpose, such as sensor overall lifespan.control.