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本发明提供一种简单实用、效果明显的隔膜平衡式流体温度传感器。其技术方案为:限位体A设置于金属隔膜内,金属隔膜和绝缘限位体B设置在壳体内,金属隔膜与壳体及感温囊形成的密闭空间内充满感温液,利用改变金属隔膜两侧压力平衡与失衡来促使金属隔膜产生微变形,实现其与绝缘限位体B上的镀膜触点短路和断开的方法做压力平衡触发信号,来捕捉平衡压力值。本发明设计合理实用,不易损坏,提高了生产效率,降低了采油成本,适合普遍推广使用。
The present invention provides a simple and practical membrane diaphragm fluid temperature sensor with obvious effect. The technical proposal is as follows: the limit body A is arranged in the metal diaphragm, the metal diaphragm and the insulation limiter B are arranged in the casing, the metal diaphragm is filled with the temperature-sensitive liquid in the sealed space formed by the shell and the temperature-sensitive bladder, Pressure balance and imbalance on both sides of the diaphragm to promote the micro-deformation of the metal diaphragm to achieve its contact with the insulating limiter B coating contacts on the circuit and disconnect the pressure balance trigger signal to capture the equilibrium pressure value. The invention has reasonable and practical design, is not easily damaged, improves the production efficiency, reduces the oil recovery cost, and is suitable for universal promotion.