Building upon decades of sensor design experience, MSA has revolutionized sensor technology with design breakthroughs that improve performance. XCell exotic SO 2, NO2, Cl2, and NH3 Sensors for expanded monitoring applications. Sensor response and clear times in less than 15 seconds for most common sensor configurations. Bump test in less than 15 seconds for most common sensor configurations. Span calibration time of 60 seconds for most common sensor configurations. Greater signal stability and repeatability under changing or extreme environmental conditions. All XCell Sensors are capable of plug-and-play installation for easy reconfiguration.