×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Potentiostatic method for Clorine

Potentiostatic method for Clorine

Potentiostatic method for Clorine

(OP)
Can any one tell me how works Potentiostatic method for  Clorine mesures and wich sensors they use. Thanks.

RE: Potentiostatic method for Clorine

abelpinto
Look up ORP instruments, if that is what you are looking for.
Hydrae

RE: Potentiostatic method for Clorine

Ablepinto,

The system works as a simple battery by using the chlorine in the water to oxidise a metal electrode. The ammount of current it generates (mA) is proportional to the amount of chlorine in the water (more amps, more chlorine). I have used Deplox units maufactured by Wallace and Tiernan. They use a platinum electrode to measure the chlorine with a built in refference electrode to correct the result for changes in pH.

I hope this is usefull.

Paul

RE: Potentiostatic method for Clorine

Hi mate

There are a few manufacturerers that produce residual analysers.  If you are looking for products Prominent do a cheap alternative to the W & T Deplox.  But you need to check the pH prior to purchase as there is a point where the pH correction probes will not accurately correct the  measured chlorine and you will require a buffered system that will correct the sample pH prior to measuring the chlorine residual.  Severn trent Services or capital control are the only buffered test gear I have used, which works well.  As the above postings say you measure a conductive potential across electrodes which relate to a residual but this must be calibrated to the water to be sampled usually with a colour based test unit.  The reading is then calculated against the pH and this is where the problems start.  Multiplying small number with large correction factors resulting in poor quality  reading.

Hope this is of some help.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources