Precise H2 and CH4 sensor

[robtillaart]

No real advice so I googled for H2 and found this (hydrogen sensor review)

• http://www.insistec.net/files/2_FIS.pdf (overview)
• http://www.fisinc.co.jp/Enew051111/products/SpecE/ESB1900.pdf (H2)
  They have evaluation modules ...

and a PDF from Nasa with a scheme:

• http://www.hydrogenresearch.org/NRM_Nov05/UF-Lin-Wireless%20Hydrogen%20Sensor-Nov05.pdf

out of your pricerange but maybe they have eval kits too?

• KHS-100 HYDROGEN SENSOR