You are not registered yet. Please click here to register!


 
 
plc storereviewsdownloads
This board is for PLC Related Q&A ONLY. Please DON'T use it for advertising, etc.
 
Try our online PLC Simulator- FREE.  Click here now to try it.

---------->>>>>Get FREE PLC Programming Tips

New Here? Please read this important info!!!


Go Back   PLCS.net - Interactive Q & A > PLCS.net - Interactive Q & A > LIVE PLC Questions And Answers

PLC training tools sale

 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old December 19th, 2017, 11:25 PM   #1
sparkie
Lifetime Supporting Member
United States

sparkie is offline
 
Join Date: Nov 2014
Location: KS
Posts: 786
Temperature Controls in a Glycol Chilling System

I'm starting on the controls of a set of glycol cooling vats this week. Something the customer wants is a centralized HMI to control and monitor all the vats, but he also wants to be able to set the temperature at the each vat. Each vat also has a roughly foot and a half deep threaded thermal well for a temperature sensor. My questions are two-fold.

I'm thinking of using a Type J RTD to monitor temperature. Is there any reason these will not work for this type of application?

I'm running into an issue with changing the temperature at the vats and at the HMI. I have to parallel them so that neither takes precedence in sending the data to the PLC. I was thinking of using a temperature controller to read the RTD and send a 4-20mA back out to the PLC, but the issue still remains with viewing and changing the setpoint from each individual station. Any suggestions on this?
  Reply With Quote
 
Jump to Live PLC Question and Answer Forum

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Topics
Thread Thread Starter Forum Replies Last Post
Cooling Tower Temperature and Vacuum Control daniyal LIVE PLC Questions And Answers 4 January 17th, 2013 03:25 PM
Is a PLC the right way to go in this case? Fasthotrod LIVE PLC Questions And Answers 30 November 2nd, 2007 12:31 PM
Eurotherm controls 2500 I/O system Uno LIVE PLC Questions And Answers 0 August 11th, 2003 12:34 AM
how often should I trigger the PID? Ron Beaufort LIVE PLC Questions And Answers 11 February 22nd, 2003 10:57 AM


All times are GMT -5. The time now is 03:46 AM.


.