Had doubted what I had been told last week by an INFICON service tech. that our gauge could only tolerate 80C bake when the external electronics were removed. I was able to confirm this in INFICON's published Operating Manual BAYARD-ALPERT PIRANI GAUGE tina46e1-a (2010-03) which also specifies this 80C limit even when the external electronics are removed (why?)-> I don't see anything in the materials exposed to vacuum list that would explain this low temperature limitation so I sent them an email requesting that they confirm.
A follow up email from company tells us that there is a build-in calibration board at the sensor.