What is the maximum gauge increment for tests requiring pressure above 100 psi?

For tests requiring pressure levels above 100 psi, the maximum gauge increment of 2 psi is mandated by the applicable mechanical code to ensure accurate monitoring of pressure conditions. This increment ensures that pressure tests can be conducted with enough precision to identify any potential leaks or issues within the system.

Utilizing a gauge increment of 2 psi strikes a balance between accuracy and practicality. If the increments were any larger, there could be a risk of missing smaller fluctuations in pressure that could indicate a problem. The choice of this specific increment reflects industry standards that emphasize safety and reliability in systems that operate under high pressure.

In this context, smaller increments than 2 psi may not be required due to the higher tolerance needed for testing at such elevated pressures. Therefore, having a maximum gauge increment of up to 2 psi provides a suitable method for monitoring while ensuring compliance with safety regulations and maintaining system integrity.