A Cheap, Semiquantitative Hand-Held Conductivity Tester
A Cheap, Semiquantitative Hand-Held Conductivity Tester
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廉价的半定量手持式电导率测试仪
DOI：
10.1021/ed072p728
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发表时间：
1995
影响因子：
3
通讯作者：
Susan K. S. Zawacky
中科院分区：
文献类型：
--
作者：
Susan K. S. Zawacky
本文介绍了一种简单的手持式电导率测试仪的结构和使用方法，当测试电解质浓度为0.001至0.10 M的溶液时，该测试仪给出了大致的定量结果。该测试仪使用由LM3914 IC驱动的条形图LED，并由单节9V电池供电。这个测试仪可以从部分可在无线电棚屋商店约10美元使用烙铁和其他一些工具。
This article describes the construction and use of a simple hand-held conductivity tester which gives roughly quantitative results when solutions ranging in electrolyte concentration from 0.001 to 0.10 M are tested. The tester uses a bar-graph LED driven by an LM3914 IC and is powered by a single 9V battery. This tester can be constructed from parts available at Radio Shack stores for about $10 using a soldering iron and a few other tools.