MT-ST; is a device that measures tightness by pressure reduction method.
MT-ST; measures how much and at what rates the liquid or gas passes through the walls of the product being controlled. According to the measurement result, it is determined whether the product is acceptable or not. It gives instant notification when there is a leak. E.g; If there is a pressure loss in the tested device, the pressure value will start to decrease and when it reaches 1490 mm H2O value, the yellow light will turn on and give a pressure loss warning. Leakage will be detected by warning.