Can the MPX5100 series sensors be used to measure domestic gas, i.e Methane and Hydrogen Sulphide?
In general, the Freescale sensors were designed and are warranted for use in clean dry air only. The media compatibility disclaimer suggests that the customers are responsible for determining media compatibility in other environments. Customers are urged to conduct their own in-house evaluations and characterizations to determine if the devices are suitable for use in their non-clean dry air environment.
In case you are interested, I recommend a couple of application notes that give some ideas for using the devices in liquid environments.
The gel coating on the die should not come in contact with moisture as when wet, the gel can swell and cause unreliable readings. The gel must remain intact as it protects the active surface of the die and wire bonds from oxidation.
Hope this information will be useful for you.
Have a great day
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