How to do a drip experiment?What are the steps?

Here's how:

1. First of all, we need to prepare a measuring cup with a scale, then turn on the faucet and adjust the faucet to an untightened state. As shown in the figure below:

2. Then put the prepared measuring cup under the faucet, wait for the water, and start the timer at the same time to see how many milliliters of water can be received in one minute. As shown in the figure below:

3. After a minute of timing, a total of milliliters of water were connected to the measuring cup, and some knowledge of volume and density was also learned in the process. As shown in the figure below:

4. When the faucet is tightened, basically 1 drop of water can be leaked in 1 second, and a total of grams of water can be leaked in one minute. As shown in the figure below:

The drip test is a test to assess whether the electronic and electrical equipment, shells and seals can ensure the good performance of the equipment and components in the rainy environment.

It has the qualification of drip test and testing of electronic and electrical equipment, and is tested in accordance with the standard method of "GB T Environmental Test Part 2: Test Method Test R: Water Test Method and Guidelines".

Drip test equipment requirements

Drip tank

The drip tank should usually have a base area that is larger than the projected area of the specimen. If the bottom area of the drip tank is smaller than the test specimen.

, the specimen can be divided into several sections, each of which is large enough to be covered by dripping. The trials were conducted consecutively.

Until the entire area of the specimen is drenched within the specified time. The drip tank should be able to provide a rainfall of the specified intensity.

Uniform drip field.

The spacing of the dropper nozzles arranged in a grid should be 20mm or 25mm, and the distance from the bottom of the drip tank to the highest point of the specimen should be adjustable.

knots to m or 2 m. A suitable drip tank is configured as specified in and in the figure.

Fixtures for the specimen

The fixture of the specimen should simulate the installation state of the specimen in use as much as possible, for example, if the equipment is mounted on the wall, it will be fixed.

It should simulate a wall.

The support frame of the test piece

The bottom area of the support frame of the specimen should be smaller than the bottom area of the specimen. The support frame can be one with a rotation speed of 1r min and approx.

A rotary table with an eccentricity of 100mm (the distance between the rotating table shaft and the test piece shaft) can also be a non-rotating table.

Child. The support frame should be able to clamp the specimen in any test position and be tilted up to 45° from the vertical plane

Water supply control

The test water should be clean and high-quality tap water, in order to avoid clogging of the drip nozzle, the water should be filtered and softened, and the detailed characteristics of the water should be described in the appendix.

a. During the test, the temperature difference between the water and the test specimen should not exceed 5 K. If the water temperature is less than 5 K below the specimen.

, the pressure of the specimen should be balanced.

Drip test procedure.

Pretreatment

If specified in the relevant specifications, the test piece and seal should be pretreated.

Initial testing

According to the relevant specifications, the specimen should be inspected for appearance, size and function.

Conditional testing

The specimen should be installed on a support frame under the drip tank in its normal working position. The support frame should then be rotated, or tilted to a specified angle in one of four tilt positions. These locations are on either side of two vertical faces that are perpendicular to each other.

If special installation conditions are required (e.g. walls or ceilings), they should be specified by the relevant code.

Recovery

Unless otherwise specified in the relevant specifications, the specimen should be wiped down and thoroughly dried at room temperature using a low-speed forced air flow.

Final detection

The water ingress of the specimen should be checked, and the visual inspection, dimensional inspection and functional inspection should be carried out according to the provisions of the relevant specifications.

If possible, the amount of water intake should be measured and recorded.

1. Then we have to continue to use the balance scale, we still have to drip a drop of water on the dropper, the quality of a drop of water is that then we have to squeeze the dropper mountain slowly, to let the dropper drip out a drop of water, we must pay attention not to drip on the balance. 3. Then we want to continue to use the balance scale, we still have to drip a drop of water from the dropper, and the quality of a drop of water is finally completed.

1.Quasi-tremors are equipped with a balance scale, and a dropper with the right amount of water is weighed. 2.

Then we have to squeeze the dropper, and we have to let the dropper drip out to bring a drop of water. 3.Continuing to use the balance scale, we still have to drip a drop of water from the dropper.

This is the <> I just had

Water taps dripping directly into the beaker? For example, drop 20 ml in 5 minutes.

If you drip directly from the faucet into the beaker, it is a bit difficult to control the speed.

The dropper doesn't. Can be replaced with a straw.

A straw for drinking water will do.

Good. That balance has no <>

I'm a senior and I've forgotten a little bit about some of my knowledge.

The drip test device is suitable for exterior lighting and signaling devices as well as for the protection of automotive luminaire housings. The drip test device is designed and manufactured with reference to the GB4208-2007 standard technology corresponding to the GB4208-2007 standard technology of the car lamp shell protection.