溶解氧在线测试仪硬件系统的研究

Study of the hardware system of dissolved oxygen analytical instrument

介绍了溶解氧测试仪在线检测的原理,硬件系统的建立,工作系统的硬件电路设计,极化电压产生电路、信号采集电路,硬件电路的稳定性试验和仪器工作的稳定性试验。对溶解氧在线测试仪的硬件系统的电极工作电流和输出电压进行线性测试,极化电压与输出电压进行线性测试,通过对零氧值和饱和氧值的标定测量,并与北京华科仪电力仪表研究所的HK-258仪表进行对比试验,证明自制仪器的硬件系统性能可靠稳定。

Based on the introduction of the operating principle and system of the dissolved oxygen analytical instrument,the design of the hardware circuits,polarization voltage generating circuit,signal acquisition circuits,the stability testing of the hardware circuits and the instrument have also been introduced.The linearization testing of working circuits and output voltages of the hardware system and the linearization testing of polarization voltages and output voltages have also been told.The experiment of comparison Zero oxygen and saturation values with the instrument of HK-258 from Beijing Huakeyi Power Plant Instrument Institute proves the reliability and stability of the self-made hardware system.