Leak check stations are typically composed of two components. The first is a dual valve pressure controller which makes measurements every 30 ms and ensures the element under test remains at a set pressure while minimizing He usage. Meanwhile, highly sensitive PID tuning and setpoint ramping functionality help protect the membrane from flow spikes during testing. This is combined with a low pressure drop mass flow meter to characterize the slightest leaks, with a pressure drop as low as 0.07 PSID across the unit. These two instruments can be controlled from a single computer/PLC using an array of communication protocols for easy automation and data analysis.
