A thermometer for oceanographic research with a time constant of about 1 ms and a resolution of less than 0.001 K: Its properties and results of its application on cruises

The author has developed a new thermometer with a time constant of about 0.5 ms as a part of his two-phase alternating current bridge. The thermometer permits the application of a Pt-wire with a low resistance of about 10-50 mOmega. A resolution of less than 0.001 K in the range of40degC can be reached. Properties, experiments, and results from measurements with this fast thermometer are described.