原理，结构                                                                              

   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，输出相应的变送模拟量报警信号。                                          

特点                                                                                   

    无活动部件,免维护,安装方便,一种型号适用多种管径要求.开关量连续可调,极低的压力损失，有多种输出功能可选择。满足不同用户对自动化控制的需求。LED数码显示，按键设定菜单。                                                                                    

应用                                                                                   

    油混水信号器用于监测水电站、火电厂及大型泵站油系统中的混水或积水量。当油箱、油管路中混水或积水即发出报警信号，提醒值班人员及时检查系统，确保发电机组安全运行。技术参数                                                                            

●设定报警范围：                            0~5%,0~10%,0~50%                                             

●材质：                            探头：黄铜合金                                             

                            螺纹：黄铜合金                                              

●信号输出：                            两路开关量（常开or常闭）或模拟量信号                   

●连接方式：                            M27*2外螺纹（M20*1.5 G1/2可选）                          

●供电：                            24VDC 、110VAC 、220VAC                                               

●负载：                            5A（继电器型）                                          

●空载电流：                            250mA                                            

●耗损电流：                            ＜60mA                                            

●测量：                            0.20%                                              

●初始化时间：                         约8s                                                

●耐压范围：                            16bar                                                

●介质温度：                           0~100℃                                           

●电气保护：                            反相，短路，过载保护                                                

●防护等级：                            IP65                                                

●重量：                            约1.8kg                                           

●探头长度：                            100mm\150mm\按客户要求特殊定制                            

选型表                                                                                                     

性能概述                                                                              

FS66型                                                                                                                        

油混水变送器，适用介质：油基液体。工作压力16bar.介质温度0…100℃。电源：DC24V AC220V 。保护级别IP65.4~20mA模拟量+两路开关量输出,黄铜合金材质，LED数码显示，按键操作设定菜单。