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Thermopile detector T11722-01

Thermopile detector T11722-01
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For CO2 concentration measurement, High sensitivity The T11722-01 is a dual-element type thermopile detector designed to detect CO2 concentration with high accuracy. It consists of a high sensitivity dual-element thermopile detector and two band-pass filters for sensing two wavelengths (reference: 3.9 μm, CO2: 4.3 μm) simultaneously. 2 wavelengths detection (Reference: 3.9 μm, CO2: 4.3 μm) Metal package (TO-5) High sensitivity Absolute maximum ratings Parameter Symbol Value Unit Operating temperature Topr -30 to +85 °C Storage temperature Tstg -40 to +125 °C Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the product within the absolute maximum ratings. Electrical and optical characterisitics (Ta=25 °C) Parameter Photosensitive area (per 1 element) Spectral response range Photosensitivity*1 Element resistance Noise voltage Noise equivalent power*1 Detectivity*1 Rise time Temperature coefficient of element resistance Band-pass ﬁlter, center wavelength (FWHM) 1 Hz, 500 K Johnson noise Absorption layer size

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Thermopile detector Spectral transmittance characteristics of window material (typical example) Operating circuits Single power supply type +V Since the thermopile output signal is very low in the order of microvolts, use an amplifier with a low offset voltage. (Example: LTC1050) KIRDC0104EA

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Thermopile detector Dual power supply type +V Dimensional outline (unit: mm) Common Case

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Thermopile detector Precautions The band-pass filters used in this product have a secondary transmission at wavelengths longer than 10 μm. If the secondary transmission aﬀects measurements, install a sapphire glass, etc. in front of the light input window to block long wavelength light. Related information www.hamamatsu.com/sp/ssd/doc_en.html Precautions ∙ Disclaimer ∙ Metal, Ceramic, Plastic package products/Precautions Information described in this material is current as of February 2017. Product specifications are subject to change without prior notice due to improvements or other...

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