France ATEQ Instruments FAQ

First, if the product is not connectedTestFor the circuit, when we perform calibration, we only need toStandardLeak orificeConnect to the leak detector's quick connector, change the display unit in the program to ml/min, and enter an estimated effective volume value; carry out inflation, stabilization, andTest, exhaust; there will be a result value displayed in ml/min; adjust the effective volume value based on the magnitude of the data so that the displayed ml/min matches theStandardLeak orificeThe data just needs to be roughly close;

     However, it is usually usedStandardLeak orificeWhen it is time, the leak detector needs to be calibrated.TestThe effective volume of the entire system comprising the fixture and the product; at this point, unless the customer can guarantee that the entire system is at zero leakage, the effective volume calibrated according to the previous calibration method will not causeTesterror; however, this situation does not exist, yet all customers are instructed to calibrate using this method, and a leak rate offset is applied; this method is incorrect, and the consequence is that the leak rate set by the system is inconsistent with that required in the instruction manual; this directly leads to misjudgment of product pass/fail!

      So how do you calibrate products that have leaks? In most cases, this is a necessary step, because we cannot find a zero-leak part, so this error must be avoided during calibration. We need to calibrate the leak rate and effective volume of the leak detector, piping, fixture, and reference part separately.

     If an incorrect equivalent volume is calibrated (in general, the volume value calibrated by an incorrect method tends to be on the small side), the product leak rate displayed by the system will be on the small side, and the missed-detection rate will increase significantly; forAir tightnessIn leak testing, stability and reliability are crucial—they must be far higher than the customer's finished product yield rate in order to demonstrateAir tightnessfunctionality of the leak testing system; otherwise, it is merely a formality and a waste of labor.