| 摘要 |
The invention relates to a method for testing the air-tightness of a closed container (3), comprising an evacuation of the container (3), measuring the pressure (p) in the container (3), measuring the time and providing an indication depending on values of the pressure (p), wherein the container (3) can be evacuated during a certain predetermined time period (t0). The method according to the invention is characterized in that it comprises: a first level detection, wherein the current value of the pressure (p) is compared with a first limit value (p2), the evacuation being switched off if the pressure is below said limit value (p2); and a second level detection after said time period (t0) has elapsed, wherein the current value of the pressure (p) is compared with a second limit value (p3), an indication regarding a leakage being provided if the second limit value (p3) has been exceeded. The invention provides a simplified and cheap, but still safe, testing of the air-tightness of closed containers, in particular fuel tanks for motor vehicles. The invention also relates to a device intended for use in the above-mentioned tightness testing of a container.
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