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液压系统中,高压管道内的油流,具有较高的压力和一定的流速。要准确测量管道内的油流温度,就必须将温度传感器装入管道内。因此要求传感器(1)体积要小,密封性好,承受一定的压力后,温度特性不变;(2)要有一定的刚性,能承受冲击不损坏;(3)要及时反映油温的波动,要求反应时间越快越好。过去由于国内还未有适合此测试条件的现成温度传感器,故往往习惯地用点温计或其他温度计在管道外壁测量温度,或测量油箱内的油
In the hydraulic system, the oil flow in the high-pressure pipeline has a higher pressure and a certain flow rate. To accurately measure the flow of oil in the pipe, the temperature sensor must be installed in the pipe. Therefore, it is required that the sensor (1) should be small in volume, good in sealing performance and maintain the same temperature characteristic after being subjected to certain pressure; (2) to have certain rigidity and withstand impact without damage; (3) , Requiring the reaction time as soon as possible. In the past as there is no ready-made temperature sensor suitable for this test condition, it is often customary to use a thermometer or other thermometer to measure the temperature on the outer wall of the pipe or to measure the oil in the tank