Force Stress Test
The QB2 electronic pressure regulator accepts feedback from many types of transducers to “close the loop” around a specific process. In a force stress test, a load cell is used to send force feedback to the QB2, which then responds with pressure control on a cylinder to provide the exact force necessary.
In this drawing, a Proportion-Air QB2 is controlling the amount of force being applied to automobile seats. This test is designed to simulate seat usage as well as wear and tear over time. The load cell senses the force and provides a feedback to the QB2. The solenoid valve is used to extend (compression) and retract (tension) the cylinder. The monitor feedback is providing an analog signal to the panel meter to show the amount of force being applied.
This works because the QB2 and load cell are calibrated to a known force designed for the specific cylinder.
Learn more about the QB2X here