Abstract: Embodiments relate generally to systems and methods for a low profile PID typically including a flexible substrate; two or more electrodes containing an array of holes; a spacer with one or more holes; and two or more contacts corresponding to the electrodes. Typically, the unfolded flexible substrate defines a plane, and the electrodes are disposed on the flexible substrate such that when the flexible substrate is folded, one electrode is located on a top plane and another electrode is located on a bottom plane and the spacer is disposed between the electrodes to form an ionization chamber for use with a UV radiation source.

Abstract: An optical communication device is provided. The optical communication device includes at least one light source and a controller configured to continuously control, by a light source control signal, each of the at least one light source to operate in at least two modes. The at least two modes include a first mode and a second mode. The first mode is used to transfer a first information, and the second mode is used to transfer a second information different from the first information. For any one of the at least one light source, in the first mode, the light source control signal has a first frequency so that a stripe presents in a first image of the light source obtained when the light source is photographed by a CMOS image sensor, and in the second mode, a second image of the light source obtained when the light source is photographed by the CMOS image sensor is substantially free from any stripe.

Abstract: Embodiments relate generally to an ultraviolet lamp (100) for use with a photoionization detector comprising a sealed tube (102) configured to contain at least one gas; a coating (120) applied to the inner surface (110) of the sealed tube (102); and a crystal window (112) attached to the sealed tube (102), configured to allow transmittance of ultraviolet (UV) light generated within the sealed tube (102).

Abstract: Embodiments relate generally to an ultraviolet lamp (100) for use with a photoionization detector comprising a sealed tube (102) configured to contain at least one gas; a coating (120) applied to the inner surface (110) of the sealed tube (102); and a crystal window (112) attached to the sealed tube (102), configured to allow transmittance of ultraviolet (UV) light generated within the sealed tube (102).

Abstract: Embodiments relate generally to an ultraviolet lamp (100) for use with a photoionization detector comprising a sealed tube (102) configured to contain at least one gas; a coating (120) applied to the inner surface (110) of the sealed tube (102); and a crystal window (112) attached to the sealed tube (102), configured to allow transmittance of ultraviolet (UV) light generated within the sealed tube (102).

Abstract: Embodiments relate generally to an ultraviolet lamp (100) for use with a photoionization detector comprising a sealed tube (102) configured to contain at least one gas; a coating (120) applied to the inner surface (110) of the sealed tube (102); and a crystal window (112) attached to the sealed tube (102), configured to allow transmittance of ultraviolet (UV) light generated within the sealed tube (102).

Abstract: An optical communication device is provided. The optical communication device includes at least one light source and a controller configured to continuously control, by a light source control signal, each of the at least one light source to operate in at least two modes. The at least two modes include a first mode and a second mode. The first mode is used to transfer a first information, and the second mode is used to transfer a second information different from the first information. For any one of the at least one light source, in the first mode, the light source control signal has a first frequency so that a stripe presents in a first image of the light source obtained when the light source is photographed by a CMOS image sensor, and in the second mode, a second image of the light source obtained when the light source is photographed by the CMOS image sensor is substantially free from any stripe.

Abstract: Embodiments relate generally to an ultraviolet lamp (100) for use with a photoionization detector comprising a sealed tube (102) configured to contain at least one gas; a coating (120) applied to the inner surface (110) of the sealed tube (102); and a crystal window (112) attached to the sealed tube (102), configured to allow transmittance of ultraviolet (UV) light generated within the sealed tube (102).

Abstract: A gas separation cartridge including a housing comprising an inlet port for an air sample to enter; a top cover attached to the housing; an upper cavity comprising individual chambers comprised of a chemical or an absorbent or a mixture thereof attached to the top cover wherein each end of each chamber has an opening; a bottom cover attached to the upper cavity, wherein the bottom cover comprises a lower cavity, a separate opening for an air sample traveling from an individual chamber to pass through, and a separate opening for an air sample that does not pass through an individual chamber; and a base upon which the bottom cover of the cartridge is seated, wherein the base has an exit port.

Abstract: The present invention provides an explosion-proof miniaturized combustible gas sensor, comprising: a metal casing having an accommodation space therein; a wire mesh, a vertical surface perpendicular to a side surface where the wire mesh is located and the other side surface opposite thereto being used as a transfer surface of the combustible gas; a heat insulation module embedded in the metal casing; a detection module sensitive to a combustible gas; a compensation module insensitive to a combustible gas and matching the detection module; where the detection module has a higher catalytic combustion activity than the compensation module; a sealant, where a bonding length of the sealant in the accommodation space of the metal casing is used as an effective bonding surface, and the effective bonding surface is perpendicular to the transfer surface. The present invention has the advantages of a miniaturized size, good explosion-proof property and reliable performance.

Abstract: A gas separation cartridge including a housing comprising an inlet port for an air sample to enter; a top cover attached to the housing; an upper cavity comprising individual chambers comprised of a chemical or an absorbent or a mixture thereof attached to the top cover wherein each end of each chamber has an opening; a bottom cover attached to the upper cavity, wherein the bottom cover comprises a lower cavity, a separate opening for an air sample traveling from an individual chamber to pass through, and a separate opening for an air sample that does not pass through an individual chamber; and a base upon which the bottom cover of the cartridge is seated, wherein the base has an exit port.

Abstract: The present invention provides an explosion-proof miniaturized combustible gas sensor, comprising: a metal casing having an accommodation space therein; a wire mesh, a vertical surface perpendicular to a side surface where the wire mesh is located and the other side surface opposite thereto being used as a transfer surface of the combustible gas; a heat insulation module embedded in the metal casing; a detection module sensitive to a combustible gas; a compensation module insensitive to a combustible gas and matching the detection module; where the detection module has a higher catalytic combustion activity than the compensation module; a sealant, where a bonding length of the sealant in the accommodation space of the metal casing is used as an effective bonding surface, and the effective bonding surface is perpendicular to the transfer surface. The present invention has the advantages of a miniaturized size, good explosion-proof property and reliable performance.