The Pressure Decay - Leak Standard test is used to determine a leak rate/flow rate calculated by the instrument from the pressure loss calculation. CTS Sentinel instruments are equipped with an Absolute Pressure Transducer that measures the delta pressure loss (psig) and converts that measurement to a flow rate (scc/m). For accuracy the instrument needs to be calibrated to perform the conversion. Once the calibration is complete converting the delta pressure to a flow rate is performed automatically by the instrument.
Pressure Decay Program Calibration
- A non-leaking Master Part is tested to establish the “Zero Leak” setpoint (Master Part Loss).
- The Master Part is tested with the Leak Standard included in the test circuit to determine the maximum Acceptable Leak Rate (Master + Leak Loss).
Using these setpoints the instrument establishes the ‘Target Flow Window’ for a pressure decay flow leak test.
Pressure Decay Leak Standard Calibration Cycle
测试周期填充了指定的测试压力的测试零件，测试零件是从源空气中隔离的，测试压力稳定的，并运行压力衰减测试。该仪器测量三角洲压力损失，并将其与流动单位相关联并报告测试结果。如果流速在“可接受的泄漏速率流量限制范围内，则该零件将通过泄漏测试。如果超出目标限制，则该零件将使泄漏测试失败并被拒绝。
