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material do curso - LSI - USP

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QUIMIO-RESISTORES<br />

Óxi<strong>do</strong>s metálicos : SnO 2<br />

– Padrão industrial<br />

• 1968 Figaro Engineering Inc. : 50 milhões vendi<strong>do</strong>s<br />

– Adição de traços de metais catalíticos (Pt, Pd) seletividade<br />

– Temperatura de operação : 300 o C a 400 o C<br />

– Potência : 1 W , microssensor : 100 mW<br />

– Baixo custo<br />

– Vida útil : 3 a 5 anos

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