电磁浓度计发送器的改进  

Improvement of Transducer of Electrodeless Concentration Measurement Instrument

作　　者：蒋健[1] 黄友之[1] 

机构地区：[1]北京理工大学化工系

出　　处：《分析仪器》1989年第3期65-67,共3页Analytical Instrumentation

摘　　要：对测量液体电导和浓度的传感器作了两项改进。传感器采用液体耦合的初级和次级变压器线圈。初级变压器由方波振荡器激励,以增加稳定性;次级变压器馈入零输入阻抗放大器,以消除磁力线引起的铁芯中磁导率的变化。This paper describes two improvements of the transducer for measuring fluid conductance or concentration. The transducer employs fluid-coupled primary and secondary transformer windings. The primary transformer is energized by a square-wave oscillator for enhancing stability. The secondary transformer is feeded into a zero-input-impedance amplifier for eliminating any flux-induced permeability changes in cores.

关 键 词：电磁浓度计 发送器 浓度计 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]