What is the successful pressure range for metallic bellows when used in instrumentation?

The successful pressure range for metallic bellows used in instrumentation typically falls within the range of 0.5 to 75 psig. This range reflects the operational limits where metallic bellows can function effectively without experiencing failure due to pressure-induced stresses.

Metallic bellows are designed to accommodate small movements while also providing a sealing function, and their construction allows them to handle moderate pressure levels reliably. The specified range ensures that the bellows can maintain their integrity and performance characteristics, such as flexing and elastic recovery, under varying conditions.

At pressures below 0.5 psig, the bellows may not operate effectively, as they might not move adequately to respond to changes in pressure or other measurements. Conversely, pressures exceeding 75 psig can lead to overstressing, which can compromise the structural integrity of the bellows, increasing the risk of leaks or catastrophic failure.

This pressure range highlights the importance of adhering to manufacturer specifications and the design limits of the materials used in instrumentation applications. Understanding these parameters enables technicians and engineers to select appropriate components for their systems effectively.