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  1. #1
    Join Date
    Apr 2003
    Posts
    106

    Niagara AX- Need a Pressure Temperature Conversion block

    Does anyone have refrigerant pressure temperature logic blocks or something they can share with me? I need to control exv's from superheat directly in the jace. I was trying to play around with writing something in the program editor but my skill level is not up to par with line by line code.

  2. #2
    Join Date
    Jul 2009
    Location
    Wa
    Posts
    112
    Can you just use a PID those work well in kit control. Or a reset??

  3. #3
    Join Date
    Apr 2003
    Posts
    106
    Yea I am going to use a pid but I need the chart to know what the superheat is. I would need 50 reset blocks to try to make this so I'd rather write a custom module

  4. #4
    Join Date
    Jul 2009
    Location
    Wa
    Posts
    112
    Any suction pressure transducers?? Suction line temp?? This could all help. R-22?? 410??

  5. #5
    Join Date
    Jan 2002
    Location
    Fort Worth\Dallas, Texas
    Posts
    1,694
    I have a program object for R22.
    Go Rangers!

  6. #6
    Join Date
    Sep 2002
    Location
    Hampton Roads, Virginia
    Posts
    1,556
    Lane I would be interested in that program too


    Thanks


    Kevin


    Email in my profile

    Sent from my DROID RAZR using Tapatalk 2
    "Profit is not the legitimate purpose of business. The legitimate purpose of business is to provide a product or service that people need and do it so well that it's profitable."

    James Rouse

  7. #7
    Join Date
    Jan 2002
    Location
    Fort Worth\Dallas, Texas
    Posts
    1,694
    Shoot me an email and I will send it to you. It took me forever to find the right equation for this and then when I did I had trouble getting it in the program object and functioning correctly. I have to give the final credit to Ron aka Codewriter for getting it completed for me. You can set the input to PSIG,PSIA, or KPA.
    Go Rangers!

  8. #8
    Join Date
    Jul 2008
    Posts
    1,420
    Quote Originally Posted by lwarren View Post
    I have a program object for R22.
    PV=mRT ... hmm would like a look at the program object too if poss.
    1 + 1 = 3 ( *** for very large values of 1)

    ...everybody wants a box of chocolates and long stemmed rose

  9. #9
    Join Date
    May 2006
    Posts
    345
    I would be interested in a copy as well.

    tia

  10. #10
    Join Date
    Jan 2002
    Location
    Fort Worth\Dallas, Texas
    Posts
    1,694
    I don't see your email listed Matrix. Whoever wants it just send me an email.
    Go Rangers!

  11. #11
    Join Date
    Apr 2003
    Posts
    106
    Quote Originally Posted by Norriski Tech View Post
    Any suction pressure transducers?? Suction line temp?? This could all help. R-22?? 410??
    yes i have suction pressure transducers and suction line temp. This is r134, but i can take the r-22 table and edit all the values to change it to 134.

  12. #12
    Join Date
    Feb 2009
    Location
    Pawtucket, RI
    Posts
    15
    I would appreciate a copy, thank you.

  13. #13
    Join Date
    Jan 2013
    Location
    San Diego, CA
    Posts
    1
    Me too, I would appreciate a copy of this program object. Thank you!

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