Description

The amount of water or water power plant monitoring hydropower station, and large pumping station in oil systems for the YHX oil annunciator. When the fuel tank, pipeline of water or water and an alarm signal is sent out to remind the staff on duty, timely inspection system, to ensure the safe operation of generating unit. 二、工作原理 Two, work principle 装置采用电容式原理。电容式传感器由内、外电极(相当于电容两个极板)及电路部分组成。当油中混水或积水后，由于二者介电常数相差很大，则由内、外电极构成的电容值发生显著变化。传感器电路产生一稳幅高频方波，当电容值发生变化，则方波频率发生变化，经过对信号的处理放大比较，输出相应的报警信号。 Device with capacitive principle. Capacitive sensor consists of an inner, outer electrode (equivalent to the capacitor two electrode) and a circuit part. When water or water in oil, because of the two dielectric constant varies greatly, the capacitor from within, the outer electrode of value changes. Sensor circuit produces a stable amplitude and frequency of Fang Bo, when the capacitance value is changed, then square wave frequency changes, after processing of signal amplifier, the output of the corresponding alarm signal. 三、技术参数 Three, the technical parameters ■ 供电电源： DC*4V±*0% 或交直流通用型DC**0V，AC**0V ，DC*4V. ■ power supply: DC*4V ± *0% or AC-DC general DC**0V, AC**0V, DC*4V ■ 功率：5W ■ power: 5W ■ 相对湿度： ≤*0% ■ relative humidity: ≤ *0% ■ 工作温度：5℃～**0℃ ■ working temperature: 5 ℃ ~ **0 ℃ ■ 贮存：**5℃～**0℃ ■ storage: **5 ℃ ~ **0 ℃ ■ 报警接点输出：常开一组 ■ alarm contact output: normally open a group ■ 容量：5A/AC**0V或5A/DC*0V ■ capacity: 5A/AC**0V or 5A/DC*0V ■ 量程设置：2.5% 与 0～5%/*0%可选 ■ range setting: 2.5% and 0 ～ 5%/*0% optional ■ *4V/**0：信号器工作电源，按极性连结 ■ *4V/**0: signal power, according to polarity connection ■ J：信号器输出接点（SPST） ■ J: signal output contact (SPST) ■ 信号器电源连接应使用屏蔽线，导线截面积不小于2.5mm2。 ■ signal power supply connection should use the shielded wire, wire cross-sectional area of not less than 2.5mm2. ■ 短路块为选择报警分档用，其中1、2相连表示报警值为5%，短路块2、3相连表示报警值为2.5%，出厂设置为5%。 ■ short block to select the alarm classification, including 1, 2 connected to said alarm value is 5%, 2, 3 short block is connected with said alarm value is 2.5%, the factory is set to 5%. 五、安装方式 Five, installation 传感器安装时，应保证电极长度L2（有效测量范围）段完全没入油中。 Sensor installation, should guarantee the electrode length L2 (effective range) segment is totally not into the oil. 三种安装方式：顶部安装、侧部安装、底部安装 Three installation: installed at the top, side, bottom mounted installation 在在油箱相应位置打一圆孔，并车好M*6×1.5 (可定制)螺纹，将传感器旋紧固定，保持良好密封即可。 In the play of a hole in the corresponding position of tank car, and M*6 * 1.5 (customizable) thread, the sensor is fixed, can keep good sealing. 六、选型说明 Six, selection