Metrology Lab Enclosures: A Guide to Modular Environments
Even with the best CMM in the world, if the environment is wrong, your measurements won’t be right. Small variations in temperature, even if only by a few degrees, can cause errors in readings and affect the accuracy of metrology equipment. That’s why, for any project involving metrology labs, enclosures are more important than ever to keep environmental conditions under control, and ultimately to yield better results. In this article, we’ll take a look at what metrology lab enclosures are, what conditions they can control, some of their benefits, features, and more.
What Is a Metrology Lab Enclosure?
A metrology lab enclosure is simply a sectioned-off room that holds measurement equipment, such as CMMs, laser scanners, or other dimensional tools. In effect, they create controlled environments where temperatures are kept within narrow ranges, often allowing no more than a degree or two of difference, and may also reduce airborne particles or regulate other environmental factors.
The purpose of them is to, of course, remove any conditions that may hamper accurate measurements. As we alluded to already, even a slight change in temperature can expand or contract a material during a reading. Often, they are required to control such conditions via ISO/IEC 17025 regulations.
Metrology rooms can be found in manufacturing environments, research areas, cleanrooms, calibration centers, and other locations. These days, modular enclosures are increasingly common, especially because they can be installed quickly, are low cost, and can be expanded later on.
What Environmental Conditions Do Metrology Labs Control?
As we’ve discussed already, metrology enclosures are made to control environmental conditions. What factors are controlled will depend on the type of equipment being used, but here are a few common conditions that are often managed.
Temperature
CMMs and similar instruments often require room temperatures around 68°F (20°C), with minor fluctuations limited to ±1.8°F (±1°C). Because small variations in temperatures can cause material to expand or contract, this helps create both accurate and repeatable measurements.
Humidity
Furthermore, humidity can also mess with metal parts and materials. Some enclosures may deploy dehumidifiers or special HVAC systems designed to keep relative humidity within a tight range as well, typically around 45% RH.
Particle Levels
Unfortunately, particles can also affect readings. Things like dust, lint, and even some viable particles can interfere with measurements. Sometimes, high-efficiency particulate air (HEPA) filters are used to keep the air clean, and in fact, many metrology labs need to reach ISO 7 / ISO 8 standards.
Vibrations
Finally, external vibrations (even minor ones) from machinery or even heavy walking, can throw off measurements. Some of these enclosures include vibration-damping flooring systems, or else they position the equipment on isolated slabs or platforms.
A Few Common Features of Modular Metrology Enclosures
These days, modular enclosures are the most efficient way to get your equipment and the environment around it under control. With traditional construction, you’ll often have to shut down your operations, and have to deal with countless uncertainties to boot. To avoid this, many companies are now turning to modular systems, and some of their common features include:
Wall and Ceiling Panels
Most panels are made of composite materials to help control conditions. Common materials include anodized aluminum, fiberglass-reinforced plastic (FRP), vinyl-clad gypsum, and others.
HVAC Systems and HEPA Filters
Of course, HVAC systems are also often deployed, along with HEPA filters (if you need to control particles); airflow can be directed depending on the setup needed, and positive/negative pressure controls can be added as well.
Roll-up Doors
High-speed roll-up doors are also fairly common, in either vinyl or steel, and help you create openings for large equipment or materials. These doors can close fast, often in under 10 seconds, which helps keep the climate under control. Special locking systems can also be added to them.
Electrical Integration
Further, modular panels include vertical raceways (within the anodized aluminum that separates one panel from another) to help route electrical wiring, data cables, and air or gas lines. They can support CAT5/6, DI water lines, compressed air outlets, and more.
Windows
Many enclosures may also have special windows, including double-glazed or anti-reflective types. Windows allow technicians and/or supervisors to watch work being done without having to disturb the environment within.
Fire and Sound Protection
Lastly, modular panels often have fire-resistant cores or sound-dampening insulation. Obviously, lowering noise will help protect the instruments from making errors, but also from risks in case there is a fire.
The Bottom Line
If accurate measurements matter to you, then environmental conditions should too. Metrology lab enclosures help you stay in control of your instruments by managing temperature, humidity, particles, vibrations, and more. And these days, modular systems are making that easier than ever.
Interested in setting up modular enclosures at your location? Reach out to the experts at MachinEnclosure.com for a quote on new structures.
FAQs About Metrology Lab Enclosures
1. How long does it take to install a modular metrology lab enclosure?
The exact time it takes will depend on the size of the enclosure, its features, and other factors, but if they’re simple, it may only take a few days. With traditional construction, it might take weeks or even months.
2. Can a modular metrology enclosure be relocated or changed later?
Yes, absolutely! One of the biggest advantages of modular enclosures is that they can be moved, expanded, or downsized as your needs change.
3. Can these enclosures be built around CMMs and other inspection tools?
Yes, certainly. Modular enclosures can be installed around equipment that’s being used already. Our panels can be brought through regular doors, so it won’t require you to shut down your operations for long, if at all.
