The 473 is the lowest cost dew point instrument from Process Insights, yet it has high performance and the same user interface as its more expensive siblings. It features cable mounted dew point measuring heads that allow the user to measure directly within the application environment, and includes a temperature probe as standard. Using both measured variables, the 473 is able to calculate, display and output relative humidity. As an option, the 473 can be specified with a barometric pressure sensor. Two standard measuring heads with 2 m connecting cables are available (lengths up to 10 m can be provided on request).

The SH2 measuring head is supplied with a small sample fan with variable speed to generate a steady gas flow over the dew point mirror. The RP2 measuring head is designed to be placed directly into environments with existing gas flow.