Request InfoHamamatsu CorporationHamamatsu Corp.’s thermopile detectors offer high sensitivity to mid-infrared wavelengths, making them suitable for gas analysis and temperature distribution measurements. The T11262-01 single-element thermopile is sensitive to 3- to 5-µm wavelengths, a spectral range where gases (carbon dioxide, carbon monoxide, sulfur oxides, etc.) have signature spectral emissions. The T11722-01 dual-element thermopile is designed for measuring carbon dioxide concentrations. It allows simultaneous measurement of carbon dioxide at 4.3 µm and a reference at 3.9 µm. 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