Jump to content

How to connect sensor to PLC

Recommended Posts

  • 4 weeks later...
  • MVP 2023

Here are Andrew's schematics-

On to the question.  The TetraCon 325 is the actual conductivity sensor, which must be connected to a conditioner/amplifer.  You have mentioned a WTW LF96 for this.  Clicking the English flag for the link you posted reports that particular item is not available, so we'll move on. 

Page 4 of your schematic shows the analog inputs, which you currently have as two wire loop powered sensors.  If whatever conductivity amplifier you choose has an analog output, it is most likely powered by the amplifier.  So you connect the + of the analog output to AN4 and the - to COM on the module.

Joe T.


electro schematics.1.pdf

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...