Abstract
In September of 1956, Shimadzu Corporation started to develop the DTA instrument under the guidance of Prof. Otsubo and Dr. Kato and this experimental instrument was installed in Waseda University as DT-1. After many improvements concerning the furnace, thermocouple arrangement, recorder and other hardware, especially the innovative methods of DTA noise reduction, Shimadzu Recording DTA Instrument, DT-1A, came firstly onto the Japanese market in 1958.
