Quick Q&A: If Your Leak Tester Isn’t Working Well, Should You Switch Brands? Try These 5 Steps First

In industries such as new energy, automotive parts, liquid cooling, consumer electronics, and medical devices,Air tightness testing equipmentWe serve as the final line of defense in ensuring product integrity.When equipment isn't working properly, problems quickly surface on the production line.::Testing the same product three times yields three different results; minor leaks are missed; a single-channel delay holds up the entire production line; fixture mismatches cause false positives and missed detections to occur repeatedly; equipment cannot be integrated with the automated production line or the MES system; when a malfunction occurs, after-sales service takes more than three days to arrive.The

You only realize the equipment isn’t working well after you’ve bought it, and replacing it takes both time and money. You’re faced with a dilemma:Repair, upgrade, or switch to a different brand altogether?

Below, with reference to domestically produced...Airtightness TesterManufacturerShenzhen Jingchenggongke Technology Co., Ltd.(JCGK)’s industry application experience, explained through six questions.

Q1:Air tightness testing equipmentIf it doesn't work well, do I have to switch brands?

Not necessarily. Let's figure out the cause first, then decide whether to replace it.The

Leak testing is a systematic process. The results depend not only on the instrument but also on the product’s structure, the fit of the test fixture, the test pressure, the filling time, the equilibration time, the test duration, and the ambient temperature. If any one of these factors goes wrong, the instrument will take the blame.

On-site Issues	Common Causes	Areas for Optimization
Poor repeatability	Product elastic deformation, temperature fluctuations, and fixture instability	Optimize the testing process and adjust the compensation parameters
High false positive rate	Poor assembly sealing; unreasonable test parameters	Inspection Fixtures and Test Conditions
Inaccurate micro-leak detection	The instrument's accuracy or detection principle is not compatible with the product	Reevaluate the Testing Protocol
Slow test speed	Excessively long detection time and insufficient single-channel efficiency	Optimize the takt time or add lanes
Data cannot be traced	System Functionality Mismatch	Add data export or MES integration

If the issue can be resolved through adjustments to parameters and tooling, there is no need to replace the equipment.Since the equipment’s core testing capabilities fall short of product requirements and the original manufacturer cannot provide an effective upgrade solution, switching to a different brand is the only viable option.

Q2: ReplacementAirtightness Tester, what should be the main focus?

Don't just look at the price, and don't just look at the specs on the brochure.. The following five items are listed in order of importance.

1. Measurement Accuracy and Repeatability

This isAirtightness TesterThe most critical metric. It’s not enough to look at the minimum resolution; you need to examine the performance in repeated tests under actual operating conditions.

Precision EngineeringAirtightness TesterVerification of Repeatability and Precision

JCGKDirect Pressure Airtightness TesterThere is a set of publicly available test data:The test pressure was set to 10 kPa, and the leakage limit was set to 50 Pa. After 11 consecutive tests on the same product, the measured leakage data remained stable between 6 and 7 Pa, with fluctuations in the historical records kept within ±1 Pa.The

Resolution, repeatability, and accuracy are three distinct concepts. When making a purchase, ask the supplier to provideActual ProductConduct multiple rounds of testing; do not accept just one set of parameter tables.

2. Check whether the testing principle is compatible with the product

Detection Methods	principle	Applicable Scenarios
direct pressure	Fill with air at a constant pressure and monitor the pressure drop	Routine seal testing: simple to perform and widely used
differential pressure	Compare the pressure changes between the reference chamber and the test specimen	High Precision, High Pressure, and Micro-Leak Detection
flow rate method	Monitor the gas flow rate passing through the leak point	Products with Specific Traffic Threshold Requirements
suction	Monitoring Pressure Changes After Evacuation	Products for which positive-pressure inflation testing is not feasible
volumetric method	Using a Sealed Chamber for Quantitative Leak Measurement	Products with no inflation ports and a fully sealed surface

If the principle is wrong, even the most expensive instrument won’t give accurate measurements.

3. Do you offer customization for non-standard tooling?

Products vary in structure, interfaces, and sealing locations, so standard jigs may not be suitable.Whether a supplier has the capability to design its own tooling directly determines whether a solution can be implemented.

4. Does it support automation and data traceability?

Companies engaged in mass production should verify the following items one by one: multi-channel inspection, PLC communication, automatic loading and unloading, barcode linking, automatic OK/NG classification, USB data export, and integration with the MES system. If even one of these is missing, it will result in additional costs for retrofitting later on.

5. After-Sales and Technical Support Capabilities

Replacing equipment isn't the same as buying a new instrument. Parameter validation, fixture design, on-site commissioning, and operator training—each step requires the supplier's engineer to be present.

Q3: DomesticAirtightness TesterCan it replace imported equipment?

Sure, provided it is verified using the actual product.The

In the past, high-end manufacturing companies tended to choose imported equipment, prioritizing measurement accuracy, stability, and a brand’s technical expertise. Today, domestically produced equipment covers a wide range of standard and high-precision industrial inspection applications.

Based on JCGK's JC-C10005 rangeDifferential Pressure Airtightness TesterFor example, it uses the differential pressure method to detect leaks by measuring changes in the pressure difference between a standard chamber and the workpiece being tested. Under appropriate testing conditions, it can be used for micro-leak detection in products such as new energy batteries, liquid-cooled systems, automotive components, precision structural parts, and medical devices.

The advantages of domestically produced equipment lie in four areas:Purchasing CostsThere is more flexible space,Customized ResponseBe able to design jigs and processes based on the product structure,Localization ServicesAllow engineers to go to the site to perform debugging,Automated AdaptationCan be configured with multiple channels, PLC communication, and MES interfaces according to the production line.

There are limits to substitution. In scenarios such as extreme vacuum or semiconductor-grade helium mass spectrometer leak detection, a specific evaluation must be conducted based on actual leak rate requirements; direct substitution is not possible.

Q4: The original equipment is already integrated into the production line. Would switching to a different brand be very difficult?

Whether it's a hassle or not depends on whether the new equipment is compatible with the existing production process.The

Specific problems call for specific solutions. If single-channel efficiency is insufficient, evaluate dual-channel or quad-channel solutions. If the equipment cannot recognize the product model, add a barcode scanner to link the barcode to the test data. If the equipment cannot connect to the production management system, evaluate the integration of the PLC and MES according to the interface requirements. If the fixtures are not compatible with the new product, redesign and customize the tooling. If manual inspection is inefficient, add robotic arms and automated loading/unloading. Suppliers such as JCGK can provide equipment, fixtures, and automation solutions tailored to the existing production line.

For production lines that are already in operation,Don't replace the entire unit right away.. The prudent approach is to first select one workstation as a pilot, complete parameter verification, takt time verification, and data comparison, and then roll it out to other workstations.

Q5: Before switching brands, how can I verify that the new device really works well?

Conduct comparative tests using “the same product, the same pressure, the same standards, and the same operating conditions” to verify the following four items:The

• Repeatability Testing: Measure the same product 10 to 20 times in a row to observe any fluctuations in the data.
• Standard Leak Verification: Use a calibrated standard orifice to verify the equipment's detection capability.
• Actual Product Validation: Use the customer's own products to test both good and defective items separately.
• Production Line Takt Time Verification: Simulate real production rhythms to verify that the equipment can meet production capacity requirements.

Test records for both the old and new equipment should be retained to compare false positive rates, repeatability, testing time, and maintenance costs.Only through testing with actual products and under real-world operating conditions can one determine whether the new equipment is worth replacing the original brand.

Q6: Domestically producedAirtightness TesterWhich manufacturers are worth considering?

When selecting manufacturers, apply the five criteria from Q2 and the verification methods from Q5 to evaluate them—applying the same standards to every manufacturer.The

JCGK (Jingcheng Engineering) can be added to the shortlist.TheShenzhen Jingchenggongke Technology Co., Ltd.(JCGK) was founded in 2016 and is headquartered in Shenzhen. It specializes inAir tightness testing equipment,Waterproof Tester,Burst Testercap (a poem)Customized Automated InspectionThe research and development, production, and sales of the product fall underA domestic manufacturer that, through years of dedicated effort, has become a leading brand in the industry.The

The product line includes direct-pressure, differential-pressure, positive- and negative-pressure hybrid, flow-based, and positive-displacement types.Air tightness testing equipment(math.) genusMultifunctional Testing Platform for Waterproof and Breathable Membranes(math.) genusBlast and Respiratory-Circulatory Testing Equipmentas well asMulti-Channel Customized Automated Inspection System. The applications span industries such as new energy, automotive parts, liquid cooling, consumer electronics, medical devices, home appliances, security and lighting, and robotics. According to publicly available company information,We have served more than 3,600 globally renowned corporate clientsThe

Here's how to do it:We provide comprehensive solutions for our customers’ actual products—from selecting inspection principles and tuning parameters to designing fixtures and tooling, and integrating automation.. Use the four-step verification process for the Q5 to determine whether this skill is a good fit.

Conclusion

If a piece of equipment isn't working well, the worst thing you can do is blindly switch to a different brand.First, identify the problem; then, assess the equipment's capabilities; finally, validate the solution using actual products....only then can we avoid the losses caused by duplicate purchases and production line downtime.

A supplier worth choosing must be able to test products—and do so accurately, consistently, and quickly—while keeping pace with production line upgrades. If you’d like to learn more about JCGK’s airtightness testing solutions, bring in your own products and have their engineers conduct a round of real-world testing.

📎 For more product information, visit our official website:www.air-tester.com

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Original Statement:this paper was written byShenzhen Jingchenggongke Technology Co., Ltd.Written by the technical team, reproduced with attribution.Data sources: Precision Engineering internal test data and customer cases.