Building or upgrading a fully integrated, production-ready system isn’t just about selecting equipment—it’s about making the right decisions early to avoid costly redesigns, bottlenecks, or test limitations down the road.
The way these leak test systems are designed impacts product quality, production efficiency, and long-term manufacturing costs. Whether you are developing a new product, scaling production, or replacing an aging test process, the decisions made early in the system design phase will shape how effective and adaptable your leak test solution is over time.
A fully engineered solution is rarely “one-size-fits-all.” Factors such as part design, test pressure and leak rate requirements, throughput goals, automation level, and plant constraints all influence how a system should be configured. Understanding these variables upfront helps ensure the test method, hardware, software, and level of automation are aligned with both your current needs and future growth.
Below are 7 key considerations to review before designing or specifying an integrated leak test system—and why each one matters.
1. Part design and variants
Part design has a major impact on how a component can—and should—be tested. Important design factors include the material (plastic vs. steel vs. cast, etc.), number of test cavities, the internal volume of each cavity, whether the part is sealed or vented, and the length and contours of potential leak paths. These details directly affect test methods, test sensitivity, stabilization time, achievable cycle times, fixtures, seals, and more.
If your system must accommodate multiple product variants or configurations, this also adds another layer of complexity. A flexible test fixture, adaptable tooling, and configurable software logic may be required to ensure all variants are tested accurately and efficiently without excessive changeover time. Identifying these needs early helps drive the correct system architecture from the start.
2. Test pressure and leak rate
Defining minimum and maximum test pressures, along with permissible leak rates, is the first step in determining the optimal test method and system design. These parameters influence everything from sensor selection and test media to fixture sealing strategies and overall system cost.
It’s common for manufacturers to know their pass/fail criteria but be unsure which test method—such as air decay, tracer gas, or even fluid-based testing—is best suited for their application. That’s okay! CTS will work with you to get the information we need, including pressure ranges, leak limits, part characteristics, and any details on how the current process may be failing (leaking), to identify the appropriate method during the system design process.
If leak rate requirements are still being defined, calculating acceptable leak rates based on part function and market requirements is a critical step before finalizing the system design.
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3. Goals for throughput and cycle time
Factors like production volume and required cycle time play a major role in how an integrated leak test system is configured. High-volume applications may require parallel testing, multiple test stations, or faster test methods to meet throughput demands without sacrificing accuracy.
Cycle time goals can also influence whether testing is performed sequentially or in parallel, how long stabilization periods can be, and how many parts are tested at once. In some cases, throughput requirements may justify a higher level of automation or additional test stations to avoid bottlenecks on the production line.
Clearly defining throughput targets early helps ensure the test system supports production goals rather than limiting them.
4. Level of automation
Custom solutions can range from fully manual to fully automated, with many semi-automatic configurations in between. Determining the operator’s role (if any) in the test process is an important design consideration.
Manual systems may rely on an operator to load parts, initiate the test, and interpret results. Semi-automatic systems can reduce operator involvement by automating test sequences, data logging, and pass/fail indication, while still relying on manual loading. Fully automated systems may include robotic or conveyor-based part handling, automatic clamping, and integration with upstream or downstream equipment.
The right level of automation depends on production volume, long-term goals and scalability, labor considerations, and budget.
5. Any special testing requirements
Some applications require capabilities beyond standard leak or pressure testing. These may include validating IP67, IP68, etc. ingress protection ratings, testing in a clean or laboratory-controlled environment, or incorporating barcode scanners and printers for part traceability.
Other specialized needs might include helium recovery systems, environmental controls, or compliance with specific industry standards. Identifying these requirements early ensures they are properly engineered into the system rather than added as an afterthought.
6. System scope and space
Not every project requires a completely new test line. Some applications may be best served by a benchtop system, a standalone test station, or an upgrade to an existing setup.
It’s also important to understand how the test system will integrate with other equipment on the plant floor. This includes electrical, pneumatic, data, and control system interfaces. Available floor space and layout constraints will directly influence system footprint, orientation, and material flow.
7. Current test setup and results
If a test process is already in place, reviewing how it has performed in the past provides valuable insight. Understanding what works well—and what doesn’t—helps guide improvements in accuracy, repeatability, cycle time, or ease of use.
Existing test data and yield trends can inform better system design. This is also an opportunity to evaluate whether more advanced data collection, analysis, or management capabilities are needed to support quality initiatives, traceability, or continuous improvement efforts.
Partner with CTS to build your leak test systems!
When you work with CTS, you gain a dedicated, expert partner invested in your success. Cincinnati Test Systems delivers fully integrated, production-ready test systems tailored to your part and process. By combining proven CTS leak testing instrumentation with custom fixturing, data integration, and validation, our team delivers solutions that ensure product quality, streamline operations, and accelerate time to market.
Learn more about CTS Integrated Test Systems Services →
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