| 摘要 |
Temperature-compensated fluid density sensor used in e.g. gas immersed (SF6) high voltage switches. The sensor is immersed in an airtight constant volume container, comprising: a variable volume chamber being in communication with said container; at least one switch actuatable by a rod; said rod being fixed to said chamber; characterized in that said sensor comprises a shape memory spring, of adjustable length, fixed on one side to a fixed point of said sensor and on the other side to said variable volume chamber. |
