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Does helium degrade pressure sensor performance?

Question asked by Andrew Lintz on Apr 16, 2014
Latest reply on Apr 21, 2014 by Jose Alberto Reyes Morales

Does high concentration helium degrade absolute pressure sensor performance?  We use MPXA4115AC6U.  3 units returned from the field use were way out of calibration (reading low).  Voltage supplies are fine.  Customer then told us they use almost pure helium.  Could this be the cause of low readings (by helium leaking into the vacuum side of the pressure sensor)?

Thanks,

Andrew Lintz

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