: New Product
announcing the eLogger V4!
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Nov 22, 2011
, 04:01 PM
Joined Nov 2003
Hi, in my experience, pressure variations in most cockpits have little effect on the actual altimeter readings. This is not true for airspeed, due to the much greater sensitivity of the sensor.
A way to validate this is to fly level (perhaps on the runway) and look for changes in altitude with the model traveling at different speeds, but at the same elevation.
The improvements in resolution, drift, filtering, and other improvements in the Altimeter V4 will far outweigh the potential error due to cockpit pressure variations IMO. However, if there are cases of the altitude readings varying significantly, it is relatively simple to seal both ends of the V4 with silicon after inserting a rigid tube (something like the ink tube inside of a ballpoint pen) and connecting that to a static source.