SMTIR9901 SMTIR9902 INFRARED SENSORS
●Introduction
▲The Smartec infrared sensors SMTIR9901 and SMTIR9902 are sophisticated full silicon infrared sensors which can be used in measuring the radiation temperature without any contact. For the different radiation temperature ranges various filters are available. The sensor type SMTIR9902 contains a temperature sensor for measuring the temperature of the sensor itself. The temperature range of the sensor-element is between - 40 to 100 ºC. The sensor is available in a standard TO-05 encapsulation and with a 5.5. µm. high pass filter.
▲Easy and accurate measuring of the sensors temperature by means of a built-in temperature sensor (only for type SMTIR9902).
●Product description
▲Thermopiles are based on the Seebeck effect, which can be considered ever since a long time as standard for conventional thermocouples. The application of thin film technology allows the production of miniaturized and low cost sensor elements.
▲A series connection of thermo junctions deposited on a silicon substrate forms the thermopile. The hot junctions are thermally isolated from the cold junctions on the substrate by etching an extremely thin membrane. A black absorbing layer on the hot junctions transforms the incoming radiation into heat. A voltage proportional to the radiation is generated by the thermoelectric effect.
▲The used thermopiles are processed on 400 µm silicon substrates using BiSb and NiCr for the thermo junctions.
▲For different radiation spectra various filters are available to find the optimal solution.
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[ surface temperatures ][ infrared radiation ][ moving objects ][ thermal alarm systems ][ climate control ][ medical instruments ][ home appliances ] |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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October 6, 2016 |
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163 KB |
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