In the world of hermeticity testing, equilibrium time (also known as stabilization time) is like a 'warm-up' before the test - invisible but indispensable. Many users often ask:How long should I set the equilibrium time on my airtightness leak tester (or airtightness tester for short)?
The truth is that there is no one-size-fits-all answer.Equilibration times typically range from a few seconds to tens of seconds and need to be adjusted flexibly depending on the situation. Just as there is no set time for cooking over a fire, but rather it depends on the state of the ingredients and the pan.
I. Behind the Scenes of Balance Time
Product Internal VolumeIt's like a space that needs to be filled. Imagine inflating a balloon or a swimming pool, which is faster? Obviously the balloon. Similarly, larger products naturally take longer to equilibrate.
test pressureIt's like the height of water. The higher the water level, the longer it naturally takes to reach equilibrium. High pressure testing often requires a fuller equilibration process.
Filling and exhausting speedIt is like the volume of water coming out of a faucet. When the faucet is turned up, the pool fills up faster; similarly, faster filling and exhausting results in a shorter equilibrium time.
connection lineIt is like a channel for water flow. The longer the test line, the greater the volume of air that follows, slowing the flow of gases and thus lengthening the equilibration time; similarly, rationally optimizing the volume of the piping space reduces the equilibration time.
Air Tightness Tester PerformanceIt is like a conductor's level. A good conductor will get the orchestra into shape faster; similarly, a high-performance leak detector will have more efficient pressure control.
Test System DesignIt is like the whole stage setup. If the stage is well set up, the performance will be smooth; if the test fixture is well designed and sealed, the balancing process will be more efficient.
II. Why is balancing time so important?
Equilibrium time is like 'focusing' before taking a picture - only when it is in focus can a clear picture be taken. In differential pressure detection, only when the pressure between the product under test and the reference chamber reaches a stable equilibrium can the differential pressure sensor keenly capture those tiny leakage signals.
If the balance is not adequate, it is like looking at the world through foggy glasses, and the test results are naturally blurredand may even putGood products misclassified as defective, or, worse yet, willProducts with leaks are misclassified as acceptableThe
III. How to find the 'just right' balance time?
Finding the right balance time is like adjusting the heat of cooking; it requires a combination of experience and wisdom.
First, consult the equipment manualThe manufacturer usually provides some basic reference values and recommendations. This is like a cooking guide on a recipe, giving you a general direction.
Secondly, hands-on experimentation is the most direct way to. Test your particular product several times and watch when the pressure curve levels off. It's like a chef finding the best fire for a particular dish through trial and error.
Third, reference to industry standards. Certain industries may already have well-established testing specifications, including recommended values for testing time. This is equivalent to learning from the experience of your predecessors and taking the road less traveled.
IV. Solutions from Precision Engineering
Precision Engineering understands the important impact of balance time on test efficiency and accuracy. In ourDifferential Pressure Leak TesterThe design pays special attention to the optimization of the equilibrium process.
die castingDifferential Pressure Leak Tester
Our devices not only offer flexible and adjustable equilibrium time settings, but also in differential pressure instrumentsIncorporates intelligent double-balance technology, which can automatically determine the leakage status according to the pressure change curveThis ensures both test accuracy and increased productivity.
IV. Solutions from Precision Engineering
Adjustment of equilibrium time in airtightness testing is like an art that requires patience and wisdom.There is no standard answer, but rather a need to find that 'golden equilibrium' that ensures both accuracy and efficiency on a case-by-case basis.
By mastering the art of balancing time adjustments, your airtightness inspection journey will be much smoother and more efficient. After all, a good start is half the battle, and adequate balancing is a good start to accurate testing.
Original Statement:this paper was written byShenzhen Jingchenggongke Technology Co., Ltd.Written by the technical team, reproduced with attribution.Data sources:Precision Engineering internal test data and customer cases.
