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A miniature mass spectrometer with an array detector for measurement of ion intensities have been developed at the Jet Propulsion laboratory (JPL). The spectrometer has a focal plane geometry, and can measure the intensities of different masses simultaneously. The array detector has a spatial resolution of 25 μm and is based on the ion-electron-photon conversion process.. Because of its simultaneous measurement of ion intensities, the mass spectrometer is uniquely suited for combination with a microbore capillary column to produce a miniature, high performance GC-MS system for air quality monitoring in space human habitats.

A small, low power, low maintenance sensor for monitoring air quality in human exploration and planetary habitats is being developed.. The sensor is based on the technologies of a focal plane mass analyzer, and an array detector. It is a nonscanning type of mass spectrometer measuring signals at all masses simultaneously. It will possess high sensitivity (ppb concentration levels). The miniature mass spectrometer (MMS) can also be used for chemical and isotopic analysis of planetary atmosphere, and surface /rock materials. MMS, when fully developed, will weigh 0.5 - 0.7 kg and consume ∼ 1 W of power.