Retrotec FanTestic Integrity (ISO) - Manual (Page 43)

rev-2014-10-27
Page 43 of 50
©Retrotec Inc. 2012
If the venting dataset is expressing the leakage of “enclosure and vent “and peak pressure is to be
relieved using leakage of the “vent only”, then the “Leakage area for enclosure” is subtracted from the
leakage area from the venting dataset to create the “enclosure and vent” leakage area for the peak
pressure calculations.
If the venting dataset is expressing the leakage of “enclosure and vent“ and peak pressure is to be
relieved using leakage of “enclosure and vent”, then the leakage area from the venting dataset is used
directly as the leakage area for the peak pressure calculations.
4.4 Venting and Peak Pressure Analysis test results
Separate results are calculated for positive peak pressure and for negative peak pressure. Calculations
vary depending on the equation set chosen to use – FSSA, VdS, or FIA. The equation for this test is set in
the drop down, and a default can be chosen from the Settings menu.
Negative results are only provided where appropriate: for Halocarbon agents if FSSA or FIA equations
are chosen and if leak to volume curve data exists for the agent.