Monitoring the growth of tension in a liquid contained in a Berthelot tube

A new method of measuring the critical tension which a liquid contained in a steel Berthelot tube can sustain is described which enables one to monitor the growth of this tension prior to its critical value at which the enclosed liquid breaks. The pressure and tension changes in the liquid inside the cylindrical Berthelot tube are measured by attaching a pressure transducer to the tube in such a way that the diaphragm of the transducer forms one of the end walls of the tube. Earlier methods used for the calculation of the critical tension are discussed and compared with the new method.