SelfTest

The SELFTEST is a system that checks the precision of the air flow rate. This check is necessary to avoid invalidation of the tests between annual controls for official certification.

The bell chamber is connected through a tube to the base station induction battery charger.

The base station includes the power supply for charging the TRIO.BAS air sampler batteries.

SELFTEST is only suitable for air samplers with induction chargers.

This system works by measuring the depression generated by the air sampler while air is aspirated through a special lid (aspirating bell) applied to the aspirating head. A differential pressure sensor measures that depression and compares it with the set value stored in the TRIO.BAS sampler under test.

The result appears at the end of the test, on the LDC of the TRIO.BAS™ air sampler. Results are displayed as: OK (the air sampler is calibrated), WARNING or ERROR (the air sampler is not within calibration specifics).

The result is recorded automatically into the air sampler according to data integrity.