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Can STACIS Vibration Isolation Systems be Used in Vacuum Environments?

Mike Georgalis, North American Sales Manager at the Technical Manufacturing Corporation explains that STACIS vibration isolation systems can’t generally be used in vacuum environments, and a couple of good reasons why you would want to avoid deploying the system in a vacuum. In the realm of vacuum environments, the deployment of STACIS systems faces notable challenges. Despite…

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Mike Georgalis, North American Sales Manager at the Technical Manufacturing Corporation explains that STACIS vibration isolation systems can’t generally be used in vacuum environments, and a couple of good reasons why you would want to avoid deploying the system in a vacuum.

In the realm of vacuum environments, the deployment of STACIS systems faces notable challenges. Despite the fact that it’s feasible to thread electric cables through vacuum seals, which is a necessary step given the electro-mechanical nature of STACIS systems, this isn’t the most substantial hurdle.

Two more significant issues come into play. Firstly, the high voltages used to expand and attract the piezos in STACIS pose a risk for electrical arcing, due to the lack of a dielectric or resistance in vacuum environments. This lack of air around the system means that there’s an increased chance of arcing between areas of differing electric potential, which could lead to serious performance issues.

Secondly, components within STACIS systems, such as epoxies, rubber cables, wires, and dampening elements, are all potential sources of outgassing. When these materials are placed in a vacuum, the reduction of air pressure accelerates the outgassing process, which can compromise the sterility of the vacuum environment.

While STACIS systems were tested for outgassing in a vacuum, this was not done to test its compatibility with vacuum use. Instead, it was performed to understand the level of outgassing it could produce, given concerns about potential interference with clean room operations.

In essence, despite their utility in various settings, STACIS vibration isolation systems are not designed for use in vacuum environments. When considering system compatibility with vacuums, both the risk of electrical arcing and the likelihood of outgassing should be primary concerns. As such, alternative solutions need to be sought for these high-demand, sterile spaces.

Video TranscriptExpand ↓

Yeah. So stasis, you know, generally can't be used in vacuum environments. And and there's a couple reasons for that. One, it's an it's an electro mechanical system, which means it needs you know, you need to somehow figure out a way to get power to it. So if you've gotta run the cables to it, you gotta run it through your vacuum, and it's kinda difficult to create seals to run run electric cable through. But it's not undoable, but the big but the mirror the more important reasons are, one, if you're in a vacuum, we're dealing with safe isolators as electronics, and they also run a very, very high voltage. So so when you take the air out of electric system, you've got basically no die no dielectric, no resistance between places where there could be upstipolarity and have potential for electrical arcing. So we have, you know, a very, very high is used in stasis to expand and attract the piezos. And if you don't have air there to prevent arcing the isolator will likely have serious performance issues. The other reason is, Stasis contains various components of out gas like epoxies and rubber cables and wires and and solder and and soft spring like dammit components and things like that, which also have gas. So, you know, when you put something that outgasses in a vacuum environment and you reduce the outside air pressure, it's just gonna accelerate that outgassing. So what you'll find is if you're trying to keep a sterile vacuum environment, you put a high out gas structure in it, you have high potential of not rooting your environment by accelerating that ice not the outgassing. So so really, it's not designed for use in in vacuum environments. What they did, they wanted to figure out how much it outgassed. So they put it in a vacuum to measure that outgassed. So they intentionally outgassed it in a vacuum. So that's how the outgassing test works. But they were in a clean room environment, and they were concerned that the outgassing would cause problems with the clean room filters and whatever other operations they were doing there.

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