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  1. #1
    Join Date
    Apr 2003
    Posts
    109
    Post Likes

    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
    146
    Post Likes
    Can you just use a PID those work well in kit control. Or a reset??

  3. #3
    Join Date
    Apr 2003
    Posts
    109
    Post Likes
    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
    146
    Post Likes
    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
    1,781
    Post Likes
    I have a program object for R22.
    Go Rangers!

  6. #6
    Join Date
    Sep 2002
    Location
    Hampton Roads, Virginia
    Posts
    1,806
    Post Likes
    Lane I would be interested in that program too


    Thanks


    Kevin


    Email in my profile

    Sent from my DROID RAZR using Tapatalk 2
    "There is plenty of room at the top because very few people care to travel beyond the average route. And so most of us seem satisfied to remain within the confines of mediocrity." -- Benjamin Nnamdi Azikiwe, first president of Nigeria

    "It's not the customer's job to know what they want." -- Steve Jobs

  7. #7
    Join Date
    Jan 2002
    Location
    Fort Worth\Dallas, Texas
    Posts
    1,781
    Post Likes
    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
    Location
    Melbourne
    Posts
    1,611
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    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

    Be brave. You cannot get eaten by an imaginary tiger.

  9. #9
    Join Date
    May 2006
    Location
    Greater Seattle Area
    Posts
    520
    Post Likes
    I would be interested in a copy as well.

    tia

  10. #10
    Join Date
    Jan 2002
    Location
    Fort Worth\Dallas, Texas
    Posts
    1,781
    Post Likes
    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
    109
    Post Likes
    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
    28
    Post Likes
    I would appreciate a copy, thank you.

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

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