Master Leaks are used for checking calibration and calibrating ATEQ leak testers from the F and G range. The leaks are delivered with a certificate of calibration in a protective box, mounted on a quick connector. Operating instructions • The leak must be used with dry and clean air • The "O" ring located inside the leak must be checked • The leak must not be used under water, and must be put in its box after use • The Leak can be visually checked by generating bubbles using tubing under water • The zero of the instrument must be checked by blanking the instrument output with cap • Option: an extra Leak can be provided in the same box to allow a double calibration check or a spare calibration office to be used when one is sent to our Laboratory for a recertification Note: the values indicated above are given for information and can vary ± 20%. The true leak rate is precisely measured before delivery with an accuracy of ± 5% of the value for a use between 15°C to 35°C. Special master leaks can be manufactured on request, within ± 5% of the nominal value.

Master jets are used for checking calibration and calibrating ATEQ Flowmeters from the D range. The jets are delivered with acertificate of calibration in a protective box, mounted on a tube fitting. Pressure Operating instructions • Must be used with dry and clean air • Must not be used under water and must be put in their box after use • Must be periodically checked by ATEO's metrology department • Checking the zero of the instrument must be done by blanking the instrument test output with a cap • Option: an extra jet can be provided in the same box to allow a double calibration check or a...