Hi Ingo Debus,
Yes, the MPL311A2 is protected with Fluorosilicone Gel (Type FE-53) just like the MPXM2202A, so it may work with a non-aggressive media different than air, however, there is a possibility that other media than dry clean air has the potential to dissolve, or be absorbed by the gel and corrupt the die surface or lead to wire-bond breakage. Some types of media will take longer to corrupt the die than others.
I would like refer you to the application note AN3728: “Media Compatibility for IPS PRT Pressure Sensors” that would be worth to be considered in addition to the provided information.
AN3728: Media Compatibility for IPS PRT Pressure Sensors
http://www.nxp.com/files/sensors/doc/app_note/AN3728.pdf
In this application note at page# 3, you can see that we have tested a couple of media, mainly on parts having media resistant gel, but we cannot give a guarantee about the long term reliability of these devices under these conditions.
We normally recommend that if a customer wants to use the pressure sensor with a different media than “Dry Clean Air”, they must validate the product performance in their application and assume all risk and liability. A determination must be made if this impact is acceptable for the application.
Have a great day,
Jose
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