Basics of conductivity measurement and how to select conductivity meter?


#1

What is electrical conductivity?

Conductivity is a measurement of ability of water to transmit electricity due to the presence of “dissolved ion”

As per the definition we can say that conductivity indicates dissolved ion content in water.

Selection of electrical conductivity electrode based on cell constant-

As per your electrical conductivity analysis range select based on cell constant as per given below table:

Selection of Electrode based on cell constant

Selection of Conductivity meter-

Application requirement-
Measurement range
Installation requirement
Pipe size and material
Hazardous location requirements
Conductivity system specification
Performance requirement
Fluid particles presence
Viscosity of fluids
Chemical compatibility of all wetted parts to process chemicals

Conductivity sensor / electrode technology-
Determine signal output requirement to match the right instrument

Conductivity instrument selection-
Meter,Controller,Monitor etc…