Abstract: An explosion-proof detector assembly for a flame ionization detector (FID) including an explosion-proof detector assembly enclosure configured to house the FID therein. A vent assembly coupled to the assembly enclosure includes a sintered metal frit configured to allow exhaust generated by the FID to vent from the detector assembly enclosure. A hydrogen supply line assembly coupled to the assembly enclosure includes a sintered metal frit configured to deliver a supply of hydrogen to the FID. A sample line assembly coupled to the enclosure includes a sintered metal frit configured to deliver a sample gas to the FID. A pressure relief assembly coupled to the assembly enclosure includes a sintered metal frit configured to ensure the pressure inside the detector assembly enclosure does not exceed a predetermined pressure.

Abstract: A metal hydride storage system for a portable intrinsically safe (IS), flame ionization detector (FID) device includes a portable intrinsically safe FID device and a metal hydride storage vessel is coupled to the FID device configured to store a predetermined amount of compressed hydrogen at a predetermined low pressure and deliver the hydrogen gas to the FID device.

Abstract: A supplemental air system for a portable, intrinsically safe (IS), flame ionization detector (FID) device includes a portable, intrinsically safe, FID device and a supplemental air system coupled to the FID device configured to store compressed air and deliver a flow of regulated air to the FID device as needed.

Abstract: A battery pack assembly for an intrinsically safe device including a housing assembly. A pair of opposing end caps coupled to the housing assembly is configured to align a plurality of cells in a predetermined orientation. A potting compound is disposed in the housing which completely encapsulates all the surfaces of the plurality of cells and provides a uniform thickness of potting compound about the cells. The potting compound is configured to dissipate heat generated by an internal short of one of the plurality of cells and/or heat generated by over-charging or under-charging one of said cells such that the temperature of any external surface of the battery pack assembly does not exceed a predetermined temperature and prevents a venting of one of the plurality cells within the potting compound.