Frequently Asked Questions

How long does it take to design and build a shroud?

Shroud design typically takes 2 to 12 weeks, depending on the complexity of the shroud. XL specializes in complex shapes and many thermal zones. Our engineers look for the common elements in any shroud design which will simplify the engineering, design and fabrication time.

Shroud fabrication also depends on size and complexity. Full shrouds typically take from 4 to 16 weeks after receipt of material. Smaller cold panels and platens can be completed more quickly.

How big a vacuum chamber can you build?

XL can fabricate and outfit a chamber up to 12' (3.6 meters) in diameter in our facility. Larger chambers are manufactured in partner fabrication facilities in sizes that are subject only to over-the-road clearance restrictions. Chambers, larger than can be transported intact, are constructed in major sub-sections and assembled on site. XL and its partners have completed chambers as large as 50' (15 meters) in width/diameter.

What TCU sizes are available? How do you measure their performance?

XL TCU's are currently available in three models:

• Model 100 - with gas flow from 80 to 150 CFM - suitable for small chambers or zones
• Model 300 - with gas flow from 150 to 400 CFM - suitable for medium sized chambers or zones
• Model 600 - with gas flow from 350 to 800 CFM - suitable for the largest chambers and zones, or the most demanding thermal conditions

Each TCU can be matched to a specific shroud configuration and payload test requirement to ensure sufficient gas flow to achieve ramp rates and uniformity. The XL TCU Calculator provides a quick approximation of the size of TCU required for a given thermal load.

Larger sizes using XL's proven vacuum insulated TCU design are optionally available.

What tools do you use to assist your engineering effort?

We use SolidWorks modeling and AutoCad drawing software applications. These are supplemented by SolidWorks Simulation (formerly CosmosWorks) for Finite Element Analysis. We use Microsoft Project to plan our projects and to share schedules and milestone expectations with our customers.

Can I upgrade my old chamber?

Yes!

New shrouds, TCU's and control systems are the most common upgrades. Pumping systems are also refurbished or replaced. Chamber modifications, ports, rail systems, platforms, and telemetry are all possible. Chambers can be relocated across the room or across the country.

Can I link all my chambers into one control system? What control hardware & software platforms do you support?

We network many chambers using a variety of hardware and software components. We often integrate existing/legacy systems with newer/modern systems.

We support all major brands of PLC (including Allen Bradley & GE Fanuc). We use a variety of SCADA packages depending on customer requirements (including Labview, RSView, Wonderware, Cimplicity and Infilink).

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