Abstract
Fluid flow measurement technique by heating method, in which the flow quantity is calculated from heating quantity and the temperature difference between the outlet and inlet of the heating section, is described. This method is expected to be especially useful for the cryogenic fluid flow measurement, since it is generally low in velocity and therefore, the usual orifice method may not be applicable and also since very accurate temperature measurement up to the order of 0.01K is possible by the use of germanium thermometer in the cryogenic temperature region. This heating method was applied to cryogenic helium gas flow measurement and some technical know-how and the accuracy obtained are described.
