When a low-level sensor in Discovery’s propellant tank malfunctioned during Wednesday’s countdown, mission commander Eileen Collins must have had that “déjà vu” feeling. And she would have had no ...

Recently I came across some non-contact liquid level sensors and gathered them out of curiosity. They have been available in the market for the past few years, but this time I was lucky enough to get ...

In Part 2 we related the impact on signal quality to some possible real-world basic signal and shield grounding choices (both the good and the bad). But, even in that brief discussion, it is clear ...