The CMDP-Series is a family of low-cost dew point chilled mirror transmitter that can be configured as a duct, wall, or pipe unit. The unit offers stable, accurate and repeatable measurements that are traceable to NIST. Available air temperature option is available on the Wall configuration. Settable service cycles for balancing and cleaning the mirror. The CMDP is a primary measurement using a fundamental principle to measure the dew point very accurately. Simple maintenance to cleaning the mirror requires using a wetted cotton swab to restore the transmitter to normal operation. Because of its construction, the customer can enjoy a long life of excellent performance.