See below linked pdf document for instructions to use a macro in COMPASS for Pressure to read ambient temperature and/or ambient relative humidity values from the .rht log file generated by LogWare.
This assumes that you already have the DewK setup in COMPASS. If not, see this article for instructions to setup a 1620A DewK temperature and relative humidity monitor in COMPASS
1620A DewK RH and Temp setup in COMPASS for Pressure (or Flow)
Questions? Contact Fluke Calibration Pressure Technical Support at the below link or by calling 1.877.355.3225