http://www.esafety.cn/blog/wll/66030/index.html

[化工]酸度计操作规程

作者[孙锡云] 发表于[2010-10-11 10:57:00]

酸度计操作规程

1、接通电源。

 

2、校正

(1)将开关,置于“pH”档位置。

(2)附适量之标准缓冲液注入试杯,玻璃电极插子插入电计“一”插口内,玻璃球及参比电极之毛细管全部浸入溶液,并缓缓摇动试杯。

(3)温度补偿器尖头旋钮一定要指于被测溶液的温度位置,并且必须做到被测液与标准缓冲溶液的温度差不大于1

(4)根据缓冲溶液之pH值,将量程选择开关,置于pH档,范围在“70档或“714档。

(5)调零点调节器,使指针指于pH7位置。

(6)按下读数开关,使电极接入酸度计,如果揿住读数开关,则在按下后旋动少许即可,然后调节定位调节器,使指针指在标准溶液的pH值位置。

(7)放开读数开关,指针应在pH7处,如有变动,则调节零点调节器,并重复(6)(7)的程序核对一次。

(8)校正至此结束,以蒸馏水冲洗电极,校正后切勿再旋动定位调节器,否则必须重行校正。

 

3、测量

(1)用滤纸将附于电极上的剩余溶液吸干,或用被测溶液洗涤电极。然后将电极浸入被测溶液中,并轻轻摇动试杯使溶液均匀。

(2)被检测溶液之温度须与标准缓冲溶液相同,否则需调节温度补偿器置于被测液的温度。

(3)指针在放开读数开关后必须指于“pH7处,否则应调节零点调节器㈡至“pH7处。

(4)按下读数开关,指针所指的值即为该溶液的pH值。

(5)如指针读数超出刻度范围“07在标度尺的左端,可将量程选择开关置于“714的位置。然后必须重复第(3)(4)二程序。

(6)测量完毕后,放开读数开关,冲洗电极。

 

4、测定完毕,切断电源。安置好酸度计。

 

  • 标签:酸度计 操作规程 
  • 圈子:注安之家 
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    原创

    作者[原创(游客)] 发表于[2016-9-30 16:18:04]
    原创(游客)http://rywkdks.lofter.com/post/1e698063_c7f72ce http://rywydx.lofter.com/post/1e6a68e3_c80cad0 http://rywkdks.lofter.com/post/1e698063_c7f6722 http://rywywj.lofter.com/post/1e6a80c3_c823329 http://njryw168.lofter.com/post/1e6983e5_c7e8acb http://rywkdks.lofter.com/post/1e698063_c7f46f1 http://njryw168.lofter.com/post/1e6983e5_c7ecd6e http://rywkdks.lofter.com/post/1e698063_c7f6721 http://rywydx.lofter.com/post/1e6a68e3_c80f655 http://rywkdks.lofter.com/post/1e698063_c7f7de6

    原创

    作者[原创(游客)] 发表于[2016-9-28 21:37:24]
    原创(游客)http://ywjseo.lofter.com/post/1e634752_c64f0a4 http://seogsywj.lofter.com/post/1e634756_c6de9c6 http://ywjseo.lofter.com/post/1e634752_c64f16e http://ywjseo.lofter.com/post/1e634752_c64f966 http://wztgywj.lofter.com/post/1e65f473_c6ef482 http://seogsywj.lofter.com/post/1e634756_c6de39d http://seogsywj.lofter.com/post/1e634756_c6de3d7 http://ywjseo.lofter.com/post/1e634752_c651bc8 http://seogsywj.lofter.com/post/1e634756_c6de24d http://wztgywj.lofter.com/post/1e65f473_c6ee022

    原创

    作者[原创(游客)] 发表于[2016-9-6 21:59:38]
    原创(游客)http://rywpxl.lofter.com/post/1e5a849c_c3d24d8 http://rywpxl.lofter.com/post/1e5a849c_c3d24d7 http://rywpxl.lofter.com/post/1e5a849c_c3d24d6 http://rywpxl.lofter.com/post/1e5a849c_c3d24d5 http://rywpxl.lofter.com/post/1e5a849c_c3d24d4 http://rywpxl.lofter.com/post/1e5a849c_c3d24d3 http://rywpxl.lofter.com/post/1e5a849c_c3d24d2 http://rywpxl.lofter.com/post/1e5a849c_c3d24d1 http://rywpxl.lofter.com/post/1e5a849c_c3d24d0 http://rywpxl.lofter.com/post/1e5a849c_c3d24cf
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