差壓型氣密檢測儀是像密封腔體內部充入設定壓力的壓縮空氣，通過測量工件內部壓力或流量變化從而檢測出是否有泄漏存在的原理。
氣密性檢漏儀是密封腔體內充入設定壓力的壓縮空氣，通過測量工件內部壓力或流量變化，從而檢測出工件是否有漏孔存在。
儀器裝載了高感度、高耐壓的壓力變速器與密封性能高、動作可靠的專用氣動閥，組成基本空氣檢測回路。
The airtight leak detector is the compressed air filled with the set pressure in the sealing cavity. by measuring the change of the internal pressure or flow rate of the workpiece, the presence of the leak hole in the workpiece is detected.
The instrument is equipped with a high sensitivity, high pressure pressure transmission and a special pneumatic valve with high sealing performance and reliable operation
