Wet sponge leak detector is mainly used to detect pinholes and leakage points on the surface of coatings. By combining wet sponge with conductive liquid, it uses the principle of conductivity to detect defects in insulation coatings (such as paint, resin, etc.).
This device uses high-pressure water spray to wet the surface of the sponge, forming a conductive layer and detecting the presence of bubbles, pinholes, or leaks on the coating surface. When the wet sponge comes into contact with the coating, if there are defects, the current will form a path through the defect area, and the instrument will determine the defect location through voltage changes.
Wet sponge leak detector is a commonly used tool for detecting water pipeline leaks. The principle is to utilize the characteristic of sponge swelling after absorbing water, and place the wet sponge at the location of the water pipeline that needs to be tested. If the water pipeline leaks, the wet sponge will absorb the leaked water and expand, thus achieving the purpose of detecting water leakage.
Instructions for use
1. Preparation: Before using the wet sponge leak detector, it is necessary to turn off the water source to ensure that there is no water flow in the testing area.
2. Prepare sponge: Soak the dried sponge in water for a period of time until all the water is absorbed, then wring out any excess water to keep the sponge moist.
3. Installing Sponge: Place the wet sponge at the location of the water pipeline that needs to be inspected, and determine if there is any water leakage by observing the expansion of the sponge.
4. Observation results: Observe the expansion of the sponge. If a large degree of expansion is found, it indicates that there is water leakage in the area and repair is needed.
Precautions
1. The sponge should be moist but not too moist, otherwise it will affect the accuracy of the test.
During testing, it is advisable to avoid interference from other factors such as wind, temperature, water flow, etc.
After the test is completed, the sponge should be promptly removed and cleaned for future use.
The wet sponge leak detector, with its advantages of low voltage, high sensitivity, and easy operation, has become a core tool for coating detection in industries such as chemical, petroleum, and electronics. Users can choose appropriate models based on coating thickness, testing environment, and budget, and strictly follow standardized operating procedures to ensure the accuracy and reliability of testing results.