In some particular situations, i.e. when the maximum permitted leak is too small, the only solution is to close the piece being testing inside a hermetic bell and pass to a shut-off "compliance" system, like the new T8980.
This equipment has 2 measurement sections, the first injects test air inside the piece being tested, the second measures the pressure increase inside the gaps in the containment bell. Then, if the piece being tested has a leak, it will transfer the pressure load in the bell, causing the pressure to increase inside it, which will then be detected by the leaks measurement section.
By doing so, in complete safety, very high test pressure is used (even 100 bar) and extremely low leaks are detected, even a few cc/h.
The new T8980 equipment includes ports for the USB slave, RS232, RS485, Profinet, EtherNet IP and EtherCAT. Assembly may also include an optional Ethernet port and a 26-pole connector with 4 inputs and 8 outputs, which are completely programmable, for interfacing with the external valves, safety barriers, switches, etc...
The front panel has a master USB port assembled on it for connection to a USB key to save the tests conducted, backup/restore parameters and upgrade tool firmware.
The connection to thermal printers, barcode/data-matrix readers and markers takes place automatically using an internal menu.