Franz Ludwig Gesellschaft für Mess- und Regeltechnik mbH Qui sommes-nous ? We, the Ludwig Moisture Control GmbH, are a family-owned electronic manufacturer in its 3rd generation and have been dealing with development and production of moisture measurement and water dosing systems for almost 50 years. In this area of application we are one of the international leading expert companies. Foundation and metrological basis of our moisture measuring systems are the microwave quotient measuring method we developed ourselves. In addition, our moisture measurement sensors with wireless data transmission make their contribution to the automation and digitization of a wide range of industrial processes.