Hamilton Company | Hamilton Sensors

Conductivity

Conductivity sensors measure the ability of a solution to conduct a current. The higher the concentration of ions in the solution, the higher the conductivity, which is measured in microSiemens (mS). Unlike pH which only measures the concentration of hydrogen ions, conductivity measurements take into account all the ionic species present.

Conductivity measurements can be used to determine the concentration of a solution provided the dissolved species are known but will not differentiate between acid and base. A common use of conductivity measurement is found in CIP (clean-in-place) systems utilized in pharmaceutical and food applications. Here, specific concentrations of the cleaning solution are critical to the process as well as ensuring the solution has been completely rinsed away at the end of the cycle.

2-Pole Sensor Features:

Low cost solution
Accurate measurement of solutions with extremely low or high ionic strength

4-Pole Sensor Features:

Measurement linearity over a large range
No polarization effects
Less sensitive to coating from contaminated samples

Sub Categories
Products
Downloads and Links

Low Conductivity & UPW
	For many industrial and vital processes low conductivity liquids play a dominant role. The probably most important ones are drinking water, ultra-pure water, water for injection and boiler feed water. An accurate measurement is essential to monitor the quality of these liquids. It's carried out best by using Hamilton's 2-pole conductivity sensors in combination with the Arc technology.

Standard & Broad Range
	In solutions with medium or higher conductivity polarization effects and coating of the electrodes might affect the measurement when 2-pole sensors are used. To avoid these negative effects 4-pole conductivity sensors should be used. Another advantage is their excellent linearity over a broad range so that they're often used in wastewater treatment and for CIP monitoring.