RdF Corporation
AN-S // Temperature Sensors
_ _
_ _
overview
product catalog
application notes
_
company info
news & updates
contact us
_
_
introductiontypesselection guidemountingapplicationsspecs  
RdF Surface Temperature Sensors
VI. Surface Thermocouple Specifications
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
TC Type _  Conductor
 Material
_  20° to 200°C
 Sensitivity

 Avg. µ v/°C
_  ANSI
 Color Code
_
  CONDUCTOR IDENTIFICATION:
_ Max. Long-Term
Temp.
Range, °C**
_  Limits
 of Error
 Standard*
  Positive + _   Negative –
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _
J _  Iron
 /Constantan
_ 54 _  White
 /Red
_  Magnetic _  Non-Magnetic _  0 to 320 _  ±2.2°C
 ±0.75%
T _  Copper
 /Constantan
_ 45 _  Blue
 /Red
_  Copper Color
 Non-Magnetic
_  Non-Magnetic  _  -200 to 200 _  ±1°C
 ±0.75% or
±1.5%<0°C
K _  Chromel
 /Alumel
_ 41 _  Yellow
 /Red
_  Non-Magnetic _  Magnetic _  -200 to 480 _  ±2.2°C
 ±0.75% or
 ±2%<0°C
E _  Chromel
 /Constantan 
_ 67 _  Purple
 /Red 
_  Non-Magnetic _  Silver Color
 Non-Magnetic
_  -200 to 370 _  ±1.7°C
 ±0.5% or
 ±1%<0°C

*Limits of error are new material interchangeability expressed in percentage of positive or negative Celsius temperature when greater than basic limit.
**Temperature range is for the small or stranded wires in surface TCs.

  _
VII. Platinum Resistance Ration Table
Temperature Coefficient 0.00385ohms/ohms/°C – Nominal IEC751– Class B Interchangeability
°C ±Class B _ R/R0 _ °C ±Class B _ R/R0 _ °C ±Class B _ R/R0
_ -200 _ _ _ 0.185 _ _ _ 50 _ _ _ 1.194 _ _ _ 300 ±1.8 _ _ 2.120 _
_ -190 _ _ 0.228 _ _ 60 ±0.6 _ 1.232 _ _ 310 _ _ 2.156 _
_ -180 ±1.2 _ 0.271 _ _ 70 _ _ 1.271 _ _ 320 _ _ 2.191 _
_ -170 _ _ 0.313 _ _ 80 _ _ 1.309 _ _ 330 _ _ 2.227 _
_ -160 _ _ 0.355 _ _ 90 _ _ 1.347 _ _ 340 ±2.0 _ 2.262 _
_ _ _ _ _ _
_ -150 _ _ 0.397 _ _ 100 ±0.8 _ 1.385 _ _ 350 _ _ 2.297 _
_ -140 ±1.0 _ 0.439 _ _ 110 _ _ 1.423 _ _ 360 _ _ 2.332 _
_ -130 _ _ 0.480 _ _ 120 _ _ 1.461 _ _ 370 _ _ 2.367 _
_ -120 _ _ 0.521 _ _ 130 _ _ 1.498 _ _ 380 ±2.2 _ 2.402 _
_ -110 _ _ 0.562 _ _ 140 ±1.0 _ 1.536 _ _ 390 _ _ 2.436 _
_ _ _ _ _ _
_ -100 ±0.8 _ 0.603 _ _ 150 _ _ 1.573 _ _ 400 _ _ 2.471 _
_ -90 _ _ 0.643 _ _ 160 _ _ 1.610 _ _ 410 _ _ 2.505 _
_ -80 _ _ 0.683 _ _ 170 _ _ 1.648 _ _ 420 ±2.4 _ 2.540 _
_ -70 _ _ 0.723 _ _ 180 ±1.2 _ 1.685 _ _ 430 _ _ 2.574 _
_ -60 ±0.6 _ 0.763 _ _ 190 _ _ 1.722 _ _ 440 _ _ 2.608 _
_ _ _ _ _ _
_ -50 _ _ 0.803 _ _ 200 _ _ 1.759 _ _ 450 _ _ 2.642 _
_ -40 ±0.5 _ 0.843 _ _ 210 _ _ 1.795 _ _ 460 ±2.6 _ 2.676 _
_ -30 _ _ 0.882 _ _ 220 ±1.4 _ 1.832 _ _ 470 _ _ 2.709 _
_ -20 _ _ 0.922 _ _ 230 _ _ 1.868 _ _ 480 _ _ 2.743 _
_ -10 _ _ 0.961 _ _ 240 _ _ 1.905 _ _ 490 _ _ 2.776 _
_ _ _ _ _ _
_ 0 ±0.3 _ 1.000 _ _ 250 _ _ 1.941 _ _ 500 ±2.8 _ 2.810 _
_ 10 _ _ 1.039 _ _ 260 ±1.6 _ 1.977 _ _ 510 _ _ 2.843 _
_ 20 _ _ 1.078 _ _ 270 _ _ 2.013 _ _ 520 _ _ 2.876 _
_ 30 _ _ 1.117 _ _ 280 _ _ 2.049 _ _ 530 _ _ 2.909 _
_ 40 ±0.5 _ 1.155 _ _ 290 _ _ 2.085 _ _ 540 ±3.0 _ 2.942 _
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
  _
VII. Useful Conversions
Temperature:
°C = 5/9 (°F – 32) °F = 9/5 (°C) + 32 °K = °C + 273.15 °R = °F + 459.67
Heat Transfer Coefficient: _ _
Multiply By To Obtain
BTU / (HR) (FT2) (°F) 0.0001356 CAL / (SEC) (CM2) (°C)
  1.929 x 10-6 BTU / (SEC) (IN2) (°F)
_ 0.0005674 WATTS / (CM2) (°C)
Thermal Conductivity: _ _
Multiply By To Obtain
BTU / (HR) (FT2) (°F / FT) 0.00413 CAL / (SEC) (CM2) (°C / CM)
_ 12 BTU / (SEC) (F2) (°F/IN)
_ 0.0173 WATTS / (CM2) (°C / CM)
 
_
  products proudly manufactured in the USA _ Specialists in Temperature Measurement
_
 
    ©Copyright RdF Corporation. All rights reserved.