we should do a project for the waste water treatment process. but we do not know what kind of senor or transmitter we can use. can anyone help us?

~~thanks

 

Plenty of level sensors for waste water at:
http://www.almegcontrols.com If you need a specific conductivity sensor simply email from the site.

Thanks Bob Hogg

 

I have tried a few types, but now I stick with GLI's pH and conductivity. GLI agents could help you with the details you require.

 

EID, Corp. is an OEM manufacturer (100% made in U.S.A) for many kinds of conductivity cells (sensors) such as 2 and 4 cells for industrial and lab use.

Additionally, EID has industrial standard transducers (boards) that allow you to connect your conductivity cell on one side, and get equivalent(uS, mS or S/cm)voltage on the other. The boards are temperature compensated.

See the following links:

A. Conductivity Cells (Cup & Electrodes). K = 0.1, 0.5, 1, 10 or can be customized to fit your needs:
http://www.eidusa.com/Conductivity_Cells.htm

B. Industrial Electrodes and Sensors:
http://www.eidusa.com/Industrial_Electrodes.htm

C. Conductivity cell K=1 with 10K@25C thermistor interface board, with built-in temperature compensation.
http://www.eidusa.com/Interface_conductivity_cell.htm

D. CONVERTER - CNDD2. Industrial conductivity to voltage converter, with built-in temperature compensation, and LCD display:
http://www.eidusa.com/Interface_conductivity_pwr.htm

E. Applications note #93:
http://www.eidusa.com/Interface_Boards_Application_1.htm

F. Conductivity Theory Page:
http://www.eidusa.com/Theory_COND.htm

Best of luck,

Ron

 

Honeywell Conductivity
http://www.convectorcontrol.com