For an optimized DIT use the following settings:
Interval between integrity tests: 7 days
Pressure threshold to turn on compressor: 0.5 bar
Pressure threshold to turn off compressor: 1.5 bar
Max pressure loss during measurement period: 118 mbar (Virex Pro 1000), 200 (Phoenix 4), 310 (Phoenix 7), 530 (Phoenix 10), 730 (Phoenix 20)
Length of pressure decay measurement period: 600 s
Duration of dewatering: 120 s (Virex Pro 1000), 180 (Phoenix 4), 240 (Phoenix 7), 300 (Phoenix 10), 300 (Phoenix 20)
Idle period after de-watering before measuring: 0 s
Duration of integrity test: 600 s
Florian Ruther, 11th Jan 2012