Type B

Type B Thermocouple

Type B Thermocouple
Data and Polynomial


  • Description
    Pt(30%)-Rh / Pt(60%)-Rh
  • Data source
    National Institute of Science and Technology (NIST)
  • Raw Data
  • Octave format
  • Curve fit
    • mV -> temperature (C)
      e is maximum error (in degrees C)
      v1 andf v2 partition the domain into three segments, each with a polynomial fit
      c is vector of coefficients: a10, a9, ... a0
      Note: Each column of c corresponds to one range (<v1,v1 to v2, >v2)

      e = 26.625

      v1 = 0.43700

      v2 = 1.8220

      c =

         -3.3455e+09   -1.4991e+02   -1.1016e-08

          7.5722e+09   
      1.6431e+03    1.1361e-06

         -7.3495e+09   -7.9377e+03   -5.1819e-05

          3.9973e+09   
      2.2240e+04    1.3848e-03

         -1.3362e+09   -4.0005e+04   -2.4161e-02

          2.8337e+08   
      4.8279e+04    2.8985e-01

         -3.8027e+07   -3.9658e+04   -2.4484e+00

          3.1347e+06   
      2.2028e+04    1.4762e+01

         -1.5123e+05   -8.1042e+03   -6.5404e+01

          4.7382e+03   
      2.1402e+03    3.0364e+02

          3.1992e+01   -2.6389e+01  
      2.0160e+02



      type_b mV->C
    • temperature -> mV (range -127C-127C)
      e is maximum error (in mV)
      c is vector of coefficients: a10, a9, ... a0

      e = 0.00051429

      c =

          3.4607e-21

         -1.5444e-18

          2.3360e-16

         -6.2362e-15

         -2.1839e-12

          2.8814e-10

         -1.6048e-08

          4.4712e-07

          1.9541e-07

         -2.2761e-04

          8.7007e-05


      type_b temperature->mV curve fit


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