| 摘要 |
A device for sensing the density of liquid comprising a housing (10) to be immersed in the liquid and having a radioactive source material (13) therein in opposed relation to a radiation detector (14) which a chamber (15) separating the source (13) and detector (14) which is in fluid communication with the exterior of the housing (10); a counter circuit and an output for providing a measure of the density of the electrolyte. |
