A hydrogen sensor, useful for trace hydrogen gas detection. The sensor involves providing a gas sample, generating modulated optical excitation sources, bringing the optical excitation source to the side of a metalized thin pyroelectric film, and detecting via a lock-in amplifier circuit the coherent...http://www.google.es/patents/US7116421?utm_source=gb-gplus-sharePatente US7116421 - Device and method for differential sensing of hydrogen gas using thermoabsorptance or thermoreflectance
Device and method for differential sensing of hydrogen gas using ...
