电导率仪的使用方法

请教一下
2025-04-04 09:42:23
推荐回答(1个)
回答1:

电导率仪的使用方法:1、未开电源开关前,观察表针是否指零,如不指零,可调整表头上的螺丝使表针指零。2、将校正、测量开关?扳在“校正”位置。3、插接电源线,打开电源开关,并预热数分钟(待指针完全稳定下来为止)调节“调正”器使电表满度指示。4、当使用(1)~(8)量程来测量电导率低于300?的液体时,选用“低周“,这时将?板向“低周“即可。当使用(9)~(12)量程来测量电导率在300?至?范围里的液体时,则将?扳向”高周“。5、将量程选择开关?扳到所需要的测量范围,如预先不知被测溶液电导率的大小,应先把其扳在最大电导率测量档,然后逐档下降,以防表针打弯。6、测量读数:一般的测量其“常数”的旋钮都打到1.0档,测量前调正(ADI)旋到最大值,然后再慢慢地调节,把测量开关打到校正档调好零点,选好量程,再把测量开关打到测量的位置然后再读数。7、电极的使用:使用时用电极夹夹紧电极的胶木帽,并通过电极夹把电极固定在电极杆上。(1)当被测溶液的电导率低于10?,使用DJS——1型光亮电极。这时应把R?调节在与所配套的电极的常数项对应的位置上。例如,若配套电极的常数为0.95。则应把R?调节在0.95处,有如若配套电极的常数为1.1,则应把R?调节在1.1的位置上。(2)当被测溶液的电导率在?~?范围,则使用DJS——1型铂黑电极。同(1)应把R?调节在与所配套电极的常数相对应的位置上。(3)当被测溶液的电导率大于?,以致用DJS——1型铂黑电极测不出时,则使用DJS——10型铂黑电极。这时应把R?调节在所配套的电极的常数的?位置上。例如:若电极的常数为9、8,则应使R?指在0.98位置上。再将测得的读数乘以10,即为被测溶液的电导率。8,将电极插头插入插口内,旋紧插口上的紧固螺丝,在将电极浸入待测溶液中。9、接着校正(当用(1)~(8)量程测量时,校正时?扳在低周。当用(9)~(12)量程测量时,则校正时?扳向高周),即将?扳到“校正“,调节?使指示针满度。注意:为了提高测量精度,当使用“×?”,?“×?”这两档时,校正必须在电导池接妥(电极插头插入插孔,电极浸入待测溶液中)的情况下进行。???

10、此后,将?扳向测量,这时指示数乘以量程开关?的倍率即为被测液的实际电导率。例如?扳在0~0.1?一档,指针指示为0.6,则被测液的电导率为0.06?(0.6×0.1?=0.06?)又如?扳在0~100?一档,电表指示为0.9,则被测液的电导率为90?(0.9×100?=90?),其余类推。11、当用0~0.1或0~0.3?这两档测量高纯水时,先把电极引线插入电极插孔,在电极未浸入溶液之前,调节使电表指示为最小值(此最小值即为电极铂片间的漏电阻,由于此漏电阻的存在,使得调?时电表指针不能达到零点)。然后开始测量。12、如果要了解在测量过程中电导的变化情况,把10mV输出接至自动电位差计即可。13、当量程开关?扳在“×0.1”,?扳在低周。但电导池插口未插接电极时,电表就有指示,这是正常现象,因电极插口及接线有电容存在。只要调节:“电容补偿”便可将此指示调为零,担不必这样做,只须待电极引线插入插口后,再将指示调为最小值即可。???14.用(1),(3),(5),(7),(9),(11)各档时,都看表面上面一条刻度(0~1.0);而当用(2),(4),(6),(8),(10)各档时,都看表面下面一条刻度(0~3)

北京菁美瑞科技有限公司是专业从事气体检测仪、水质检测仪、空气环境质量检测设备、食品安全卫生检测设备、科学/实验室生化分析设备、无损检测设备、气象检测设备、建筑工程/石油化工分析仪、光谱/分光光度计、安全防护设备等仪器仪表的研发、设计、生产、销售以及运营维护服务的企业。公司JMR-423型电导率仪采用大屏幕、LCD段码显示,具有手动、自动温度补偿功能。选用电导池常数0.01cm-1的钛合金电极和密封测量槽,可用于高纯水的测量。

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