Electrical resistivity and conductivity conductivity in a solution. A rough summary is as follows: This table shows the resistivity (ρ), conductivity and temperature coefficient of various materials at 20 °C (68 °F, 293 K) The effective temperature coefficient varies with temperature and purity level of the material. The 20 °C value is only an approximation when used at other temperatures. For example, the coefficient becomes lower at higher temperatures for copper, and the value 0.00427 is commonly specified at . The extremely low resistivity (high conductivity) of silver is characteristic of metals. George Gamow tidily summed up the nature of the metals' dealings with
Electrical conductivity meter the way temperature affects the conductivity "of a solution" can be modeled linearly using the following formula: where The temperature compensation slope for most naturally occurring waters is about 2%/°C, however it can range between 1 and 3%/°C. The compensation slope for some common water solutions are listed in the table below. Conductivity measurement is a versatile tool in process control. The measurement is simple, fast and most advanced sensors require only a little maintenance. The measured conductivity reading can be used to make various assumptions on what is happening in the process. In some cases it is possible to