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Leak Detector Too Expensive? That’s Because You Don’t Know These Things!!!
Many business owners who just purchased a leak detector may have faced this dilemma: products are frequently returned due to leakage issues. Determined to invest in a high-end leak detector, you open it up only to find that it doesn’t look all that “high-end.” You start feeling the money wasn’t worth it? Don’t worry. As an engineer with over 10 years of experience at WAFU Brothers, I’ll share how to choose a truly suitable, cost-effective leak detector—so that every penny is spent wisely!
To select the right leak detector, the key lies in “knowing both yourself and the equipment.” You must not only understand your product’s sealing requirements but also grasp the technical aspects of the tester. Below, I’ll walk you through these two crucial points step by step.
1. Identify the Core Requirements of Your Product
1. Test Pressure Value: First, determine the appropriate test pressure value for your product—how much working pressure it can withstand in real conditions. If the pressure is set too high, it adds unnecessary trouble and cost; too low, and it cannot accurately detect leaks.
2. Number of Test Channels: Multi-channel means the instrument can test multiple products at once. The more channels, the higher the fixture cost. Therefore, decide the number of channels based on your product’s daily throughput.
3. Reasonable Budget: Your budget will increase with more requirements. Controlling the requirements essentially means controlling the budget.
2. Understand the Mainstream Testing Technologies
Common testing methods on the market include direct pressure testing, differential pressure testing, and flow testing, as well as specialized helium mass spectrometry. Each method has its strengths—there is no absolute “best,” only what best fits your product!
- Principle: Air is directly charged into the product, and sensors monitor internal pressure changes to determine leakage.
- Advantages: Low cost, fast testing speed, widely used, simple operation.
- Disadvantages: Accuracy is easily affected by environmental noise and conditions.
1. Direct Pressure Testing
- Principle: The product is inflated to a target pressure, similar to controlling water flow from a tap. The system then measures how much the flow changes per minute; deviations indicate leakage.
- Advantages: Fast detection speed, results are independent of the product’s internal volume, suitable for large-volume components.
- Disadvantages: Requires a reliable reference part, and the testing process is relatively complex.
2. Differential Pressure Testing
- Principle: Air is charged into the product, and flow sensors measure pressure differences to determine leakage.
- Advantages: High accuracy, quick detection, widely applicable.
- Disadvantages: Higher cost compared to other methods.
3. Flow Testing
- Principle: The tested part is first evacuated, then filled with helium, which is detected using a helium mass spectrometer.
- Advantages: Extremely high precision (up to 10⁻¹² Pa·m³/s), absolute results, unaffected by product volume or deformation.
- Disadvantages: Very expensive equipment, slower detection speed, helium requires periodic replenishment, leading to high maintenance costs.
4. Helium Mass Spectrometry
Another factor that affects the price is whether it is an open-type test or a sealed test. These two testing types are determined by your product and the location to be tested. Generally, sealed testing is slightly more expensive because it requires fixture sealing and a gas tank.
3. How to Choose a Suitable Leak Detector
1. If your product belongs to the high-end category, with very strict testing requirements, pursuing ultimate precision and not constrained by budget, you can choose helium mass spectrometry testing.
2. If you require high accuracy and stability, you can select from several common testing methods. Their prices do not differ significantly, usually around 200,000 RMB, but the exact cost still depends on the product.
3. If your budget is limited and you’re looking for a more affordable option, you can consider direct pressure or water immersion testing. At WAFU Brothers, we also provide targeted non-standard customized solutions.
4. Choosing an Excellent Company
Selecting the right testing principle not only ensures better detection of product leaks but also delivers great value for money. However, many decision-makers may still feel uncertain when making a choice. At this point, choosing an outstanding company becomes especially important. Here, I strongly recommend Shenzhen WAFU Brothers — a company with 16 years of industry experience in testing, having served numerous enterprises both domestically and abroad. Their sales team and engineering team are highly experienced professionals, and their expertise speaks for itself. They can provide you with the most cost-effective products in the industry!
Finally, when it comes to purchasing a leak detector, I hope the four key points I’ve shared will help business owners find the right product that fits their needs. If you still have unresolved questions, please contact WAFU Brothers or visit the official website (www.wafubrother.cn) for more details!