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Visual Leak Detection Testing Machine Sealing Quality Inspection Equipment

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Detail

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The Air Tightness Tester is an advanced testing solution designed to measure leakage and verify the sealing integrity of products under controlled pressure conditions. It helps manufacturers ensure that components and assemblies meet specified airtightness requirements before shipment or final assembly.

Equipped with a precision pressure sensor and an intelligent control system, this air leak testing machine can perform automated testing by monitoring pressure variations within a test sample. Depending on the selected testing method, the system evaluates leakage levels and determines whether the tested product meets predefined acceptance criteria.

The industrial air tightness tester is suitable for a wide range of applications, including automotive components, battery enclosures, electronic housings, plastic parts, pneumatic components, valves, pipes, and household appliances. It can be integrated into production lines or used as a standalone inspection device in laboratories and quality control departments.

With programmable test procedures, clear result displays, and customizable testing parameters, this air tightness testing equipment helps simplify inspection processes and reduce dependence on manual testing. Customized test fixtures and automated loading solutions can also be developed to accommodate different product designs and production requirements.

By identifying potential leakage problems at an early stage, an air tightness tester supports improved product durability, reduced defect rates, and more consistent manufacturing quality. It is an effective choice for businesses seeking dependable leak detection equipment for modern industrial production.

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1. Working principle

It is based on the pressure difference leak detection method. During testing, the sample is placed in a transparent testing tank of a visual leak testing machine, and positive pressure, negative pressure, or water pressure is applied through an automatic control system to create a pressure difference between the inside and outside of the sample. If there is a small leak, gas or water molecules will be expelled from an unsealed area to form bubbles, which can be clearly seen by the testing personnel through the fully transparent acrylic tank of the visible leak testing machine. This method improves the efficiency of disassembly and inspection by 80% compared to traditional water immersion methods, and does not damage the sample.

2. Application fields

Sealing testing is conducted on products such as underwater lighting fixtures, underwater connectors, underwater sensors, automotive parts, waterproof watches, waterproof phone cases, etc,

3. Functions

It’s used to evaluate the sealing reliability of products in continuous immersion environments. Fully transparent design, which detects the leakage point of the sample by checking whether there are bubbles after immersion in water, quickly locates whether the product is sealed tightly, and facilitates the design, improvement, calibration, and factory inspection of the product. It is a key tool for research and quality control

4. Execution standard

IEC 60529: 2001 Degrees of security provided by enclosures (IP Code)

GB 4208-2008 Degrees of protection provided by enclosure (IP code)

GB 7000.1 -2015 Luminaires Part 1: General Requirements and Tests

5. Features of the equipment

The machine has three testing functions, including the IPX8 waterproof rating testing on products, with a water depth of 30 m.

A. Water pressure testing; B. Air pressure testing; C. Negative pressure testing.

5.1. Water pressure test

5.1.1. Working principle

a. Place the sample on the sample platform inside the testing tank in advance,

b. Cover the lid, tighten the screws, set the test pressure and time, and then start the equipment.

c. The sample platform immerses the sample in water, increases the air pressure on the water surface to the set value, and then maintains the pressure. If there is a leakage point in the sample, the water will be pressed into the sample, and the air inside the sample will be discharged. The leakage point of the sample can be observed through bubbles.

d. The test is completed, and the sample platform rises out of the water with the sample, open the lid and take out the sample.

5.2. Air pressure testing

5.2.1. Working principle

a. Place the sample on the sample platform inside the testing tank in advance,

b. Cover the lid, tighten the screws, set the test pressure and time, and then start the equipment.

c. The sample platform stops with the sample in the air on the water surface, increases the air pressure on the water surface to the set value, and maintains the pressure. If there is a leakage point in the sample, the air will be compressed into the sample.

d. After the holding time is up, the sample platform immerses the sample in water while releasing the pressure on the water surface. At this point, the air pressure inside the sample will be released, and the leakage point of the sample can be identified by observing bubbles.

e. The test is completed, and the sample platform rises out of the water with the sample, open the lid and take out the sample.

5.3. Negative pressure testing

5.3.1. Working principle

a. Place the sample on the sample platform inside the testing tank in advance,

b. Cover the lid, tighten the screws, set the test pressure and time, and then start the equipment.

c. The sample platform immerses the sample in water, vacuumize the water surface to the set value and maintain pressure. If there is a leak in the sample, the air inside the sample will be evacuated and the leak can be observed through bubbles.

d. The test is completed, and the sample platform rises out of the water with the sample, open the lid and take out the sample.

6. Structure and material

6.1. Test tank material

The tank body is made of acrylic material and is fully transparent around it (for easy observation of the test sample testing situation). The pressure tank has undergone a double pressure withstand test in the factory and is equipped with a safety valve to ensure the safety of users.

6.2. Special silicone sealing ring

With good elasticity, not easily damaged, and a service life of up to 10 years.

6.3. Control system

Adopting a 7-inch color touch screen, parameters such as holding time, test pressure, and delayed release time can be set, with full touch operation for easy use.

6.4. Electronic  control components

Imported brands (such as LS, Omron, etc.); The pneumatic components are made of Taiwan's original Yadeke, ensuring the stability and service life of the equipment.

6.5. Pressure control

Adopting a high-precision pressure sensor of level 0.5, with a water depth control accuracy of ± 20cm

6.6. Internal  dimensions

L600 × H500mm

6.7. External dimensions

L800 × W550 × H1000mm

6.8. Tank wall thickness

10 mm

6.9. Tank material

Acrylic material

6.10. Flange thickness

20 mm

6.11. Flange material

Stainless steel

6.12. Sample tray size

Diameter 330 mm

6.13. Tray load-bearing

≤10KG

6.14. Height of tray from the bottom

195mm

6.15. Weight

About 100KG

7. Functional parameters

7.1. Pressure control method

Automatic adjustment

7.2. Pressure error value

± 0.2 meters/± 0.002 MPa

7.3. Test water depth

1-30 meters

7.4. Pressure range

Negative pressure range: -0.05-0MPa;

Positive pressure range: 0.01-0.3MPa

7.5. Exhaust pressure of safety valve

0.15Mpa

7.6. Holding time

0-999999 S adjustable

7.7. Protective device

Mechanical safety valve protection, leakage switch protection

7.8. Power supply

220V, 1ph, 50/60HZ

7.9. Power

100W

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+86 13018663273

Mail:

carleen@sailham.com

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