Differential pressure method airtightness tester

NegotiableUpdate on 05/07

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Overview

The differential pressure method airtightness tester has also been widely recognized and popularized in the medical device/medical industry. At present, widely used products include blood pressure monitors, electronic thermometers, endoscope capsules, surgical punctures, medical irrigation guns, electronic stethoscopes, medical dental cleansers, medical urine bags, water storage bags, and various infusion and oxygen tube tests.

Product Details

　　Differential pressure method airtightness testerIt is a widely used testing equipment in the fields of automotive, electronics, medical, aviation, etc., used to detect the leakage and airtightness of products under various gas pressures, in order to ensure the quality and safety of products.

The working principle is based on the principle of differential pressure sensors, which detect air leakage by measuring the pressure difference between the measured object and the atmosphere. The tester includes components such as the tester host, pressure sensor, differential pressure sensor, air circuit unit, and controller. During the testing process, the test object will be sealed in the test chamber, and the gas pressure will be increased to a certain value through a pump. Then, the gas path will be closed and the system will be maintained for a period of time. The differential pressure sensor will be used to detect the amount of leakage, and the airtightness performance of the test object will be evaluated by calculating the leakage rate, leakage amount, and other indicators.

Instruments are widely used in fields such as automotive, electronics, medical, aviation, etc., for leak detection and airtightness performance testing of automotive engines, transmissions, braking systems, air conditioning systems, fuel systems, etc., airtightness testing of medical equipment, electronic devices, etc., as well as equipment airtightness testing in aerospace and other fields. In the automotive manufacturing industry, it is widely used in quality inspection and R&D testing on factory production lines, which can quickly and accurately detect the leakage of various systems in the car, ensuring the quality and safety of the car.

When using, the following points should be noted:

1. Select the tester model and testing parameters based on the type of test object, airtightness requirements, and testing requirements to ensure accurate and reliable test results.

2. Secondly, install and connect the tester correctly according to the instructions, ensuring that the air path between the tester and the tested object is unobstructed.

3. Then, perform pre leak testing and calibration to ensure the accuracy and stability of the testing instrument.

4. When conducting a leak test, it is necessary to adjust and repair the leak location of the tested object in a timely manner based on the test results to achieve airtightness.

In the new form of the market, the application of differential pressure airtightness testers in the medical device/medical industry has also been widely recognized and popularized. At present, widely used products include blood pressure monitors, electronic thermometers, endoscope capsules, surgical punctures, medical irrigation guns, electronic stethoscopes, medical dental cleansers, medical urine bags, water storage bags, and various infusion and oxygen tube tests.

With the development and progress of technology, the medical device industry/medical industry guided by public health is becoming an important component of emerging industries. The improvement of living standards has promoted the awareness of public health, which has also driven the rapid development of the medical device industry. Quality issues are crucial in the production of various medical device products in the medical device industry. When it comes to the quality issues of various components of medical devices during production, we may wonder if this product has undergone a quality control process of air tightness testing before leaving the factory. Once medical device products ignore the issue of airtightness, it directly affects the health of the public.

Next, let's talk about several steps that need to be evaluated before choosing a differential pressure airtightness tester:

1. When the company's quality engineer is responsible for determining the specifications, production processes, and testing procedures for new components, the product manufacturer should first consider the cost and benefits of leak testing to determine whether the tested components are needed.

2. If it is determined that leakage testing is necessary for the manufactured components, the next step is to identify potential leakage paths. Common areas include welding, sealing, microcracks, and pinholes. Most leaks are small and invisible to the naked eye, which is why data rich test results are needed.

3. After determining the potential leakage path, engineers establish a leakage rate rejection limit for the application based on theoretical calculations, industry standards, and comparisons with similar existing application standards.

4. Next, manufacturing engineers can collaborate with manufacturer engineers to determine appropriate leak testing methods, whether it is differential pressure attenuation, positive pressure testing, negative pressure testing, or flow testing. Based on the company's budget, product specifications, determined testing methods, and production integration requirements, product manufacturers can choose leak testing instruments that are suitable for their needs.

5. Most of the time, product manufacturers hope to integrate the airtightness tester with the production line. If this is the case, once the airtightness tester is selected, engineers can work closely with customers and machine manufacturers to design personalized fixtures to meet their testing requirements.

in the selectionDifferential pressure method airtightness testerWhat should we pay attention to when doing so?

1. Users can choose a tester without input or output ports, which needs to be used separately for sealing testing and does not need to be connected to other control systems.

2. When the internal volume of the sealing test is greater than 5l, flow type should be selected as much as possible; For the sealing detection of workpieces with an internal volume less than 5l, flow type or differential pressure type can be selected according to process requirements.

3. When there are many varieties to be tested on the production line, each variety requires different parameters. In this case, users need to choose an airtight detector with channel function.

4. For workpiece detection with strict requirements for leakage indicators, it is necessary to choose a high-precision and high-quality airtight detector.