Additional test circuits are useful if
- several test specimens simultaneously
- several test circuits in one test specimen simultaneously
- several tests in one system independently of each other
are to be tested.
Additional test circuits are available for the INTEGRA and INTEGRA evo leak testing systems.
With the INTEGRA model, up to two additional test circuits can be connected with the aid of the optionally available multi-circuit expansion.
A total of up to three test circuits can be operated on the INTEGRA evo.
All test circuits operate completely independently of each other.
They can use different or identical parameter sets.
They can be started simultaneously or one after the other.
Each test circuit can operate according to a different test method.
Thus, three different tests can be carried out per leak testing system.

