Unfortunately the Cockpit software was obsoleted long ago as it will not function on later releases of Windows. The latest version it will function with is Windows7 32 bit (will not function with 64 bit version)
You could consider our COMPASS for Pressure software as it allows you to launch just a PPC4 window to view/control the PPC4 but it is not a direct emulation of the PPC4 user interface. Here is what the PPC4 screen looks like for comparison and you can change pressures, etc. from it:
COMPASS for Pressure is a full calibration/automation software so has many other benefits and is a common platform for all Pressure references, DUTs, etc.
Product info - https://us.flukecal.com/products/calibration-software/pressure-calibration-software/compass%C2%AE-pressure-software
COMPASS Overview Video - https://us.flukecal.com/literature/articles-and-education/calibration-software/video/compass-pressure-version-4-overview
COMPASS Usage Video - https://us.flukecal.com/literature/articles-and-education/software-calibration/video/using-compass-pressure-videos