The Testo 6741 (0555 6741) Dewpoint Transmitter is designed specifically for measuring trace humidity in compressed air or dry air. It boasts a polymer humidity sensor that features a high degree of accuracy and long-term stability. Use the 6741 Dewpoint Transmitter to prevent damage (e.g. in refrigeration dryers or membrane dryers). This can save you a considerable amount of money, because if the quality of the end product is impaired in any way, it can prove costly. The cost of running adsorption dryers can also be reduced: accurate humidity-controlled chamber activation precisely adjusts the use of regenerated air to meet requirements – not at a preset time increment, which often creates unnecessary, excess consumption of regenerated air.