PT100 equation

Discussion in 'Embedded Systems and Microcontrollers' started by anujab9, May 19, 2008.

  1. anujab9

    anujab9 Thread Starter New Member

    Joined:
    May 16, 2008
    Messages:
    4
    Hello all,

    There is one Equation for PT 100 for negative temperature:
    Rt = R0(1+aT+bT²+cT³(T-100))

    R0=100 ohms
    Rt is resistance of PT100
    a=0.003069
    b=0.000000587
    c=4.27x10^-12
    T temperature

    so form this eq what will be the equation for T?
    means T=?
    Thanks in advance
     
    Last edited: May 19, 2008
  2. Mark44

    Mark44 Well-Known Member

    Joined:
    Nov 26, 2007
    Messages:
    626
    Location:
    Snohomish County, USA
  3. anujab9

    anujab9 Thread Starter New Member

    Joined:
    May 16, 2008
    Messages:
    4
    Hello mark

    I got the equation thank you soo much.
    But ther is one doubt... which root should I take for futher calculations?as there are 4 values of T
     
  4. mrmeval

    mrmeval Distinguished Member

    Joined:
    Jun 30, 2006
    Messages:
    833
  5. hgmjr

    hgmjr Moderator Staff Member

    Joined:
    Jan 28, 2005
    Messages:
    9,030
    Location:
    Tennessee, USA (GMT-6)
    I suggest you put the equation into a spreadsheet and graph the equation to see what it looks like.

    hgmjr
     
Loading...

Share This Page