The RO-PDM series is a precision portable dew point transmitter that provides quick and accurate humidity, dew point and temperature measurements for compressed air applications. It has a wide temperature range of -60°C to 20°C at 25C ambient temperature and is resistant to most chemicals. This portable unit has two configurations, either AC powered or battery powered. The unit has flexibility where the sensor can be removed from the sample chamber and inserted directly into the process if needed.