Gas Leak Detection 7


Gas Leak Detection 7 : Types of Gas Detectors: (6) Holographic Detectors: Holographic gas sensors use light reflection to detect changes in a polymer film matrix containing a hologram. Since holograms reflect light at certain wavelengths a change in their composition can generate a colorful reflection indicative of the presence of a gas molecule. Holographic sensor require however illumination sources such as white light or lasers and an observer or CCD detector
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