Hi everyone,
I have to measure conductivity in batch processing liquids, basis is water but additives are widly unknown and change every time. The batch temperature can be up to 140°C, and very high conductivity values up to 20.000 - 30.000 micro Siemens can be expected. Some Idea?
Thanks in advance

 

Conductivity is simply that. Find compatible materials, and force a voltage and measure a current. Cell designs are simple and well documented. With moderate flow to avoid polarization effects, it's about as simple as it sounds.

Regards

cww

 

Try "http://www.thorntoninc.com":http://www.thorntoninc.com

 

There are plenty of options for that range and temperature. Some of the better known manufacturers are:
"www.rosemount.com/":http://www.rosemount.com/
"www.foxboro.com/":http://www.foxboro.com/
"www.yokogawa.com/":http://www.yokogawa.com/

Vince

 

It is easier and cheaper to buy a conductivity measurement system from the folks who make them.

Unless, of course, you don't count your time.

Walt Boyes

---------SPITZER AND BOYES, LLC-------------
"Consulting from the engineer
to the distribution channel"
www.spitzerandboyes.com
[email protected]
21118 SE 278th Place
Maple Valley, WA 98038
253-709-5046 cell 425-432-8262 home office
fax:801-749-7142
--------------------------------------------

 

try "www.burkert-usa.com":http://www.burkert-usa.com
you may need to use inductive conductivity for your application

 

Conductivity is very dependent on temperature so you MUST compensate for temperature changes. The curve is not a straight line and also depends on the disolved material. You need to know what you are measuring to configure the instrument. Most modern instruments have automatic temperature compensation. Some only compensate for neutral salts others have a selection of common materials. The better ones alow you to enter values into a look-up table.