The DX probe uses the chilled mirror reference technique for dew point/frost point measurement. It is compact with integrated temperature measurement and has a 1″ 1/4 NPT male thread for direct insertion into a process. Measuring the dew point temperature and dry temperature at the same location improves relative humidity accuracy. The active cooling of the DX probe enhances its stability and offers a range of -40 to +95°CPR. Compensation and isolation of the active PRT temperature probe eliminate drift.