Process analyzers are critical components in many advanced process control and environmental monitoring applications. Besides being critical, they're often complex, or at least if the analyzer is not complex, the associated sample system can be. However, just as one often overlook the infrastructure necessary to support other field instruments, the same happens to the protection of the analyzer system - the shelter and its design. But designing a suitable process analyzer shelter, even for a complex system, does not have to be an intimidating task. The article presents some basic guidelines in designing an analyzer system housing.