TX1A SERIES 200KOhm@25°C THERMISTOR SPECIFICATIONS
 
  General Information
  Interchangeability Tolerance and Accuracy
  Resistance vs Temperature (R-T) Table and Data Download

 General Information

Thermistor is a generic term describing a semiconductor device that exhibits an electrical conductivity that is highly sensitive to temperature. The name was derived from the words, "thermally sensitive resistor". These devices may be either positive temperature coefficient (PTC) or negative temperature coefficient (NTC) with respect to their resistance characteristics with temperature.

Our thermistor sensors have an NTC type resistance versus temperature characteristic. In addition, they have a matched resistance versus temperature curve and are interchangeable from one thermistor to another per the specified tolerance.

The tolerance used for our thermistors is typical in the industry and represents the best compromise between price and what is achievable with good manufacturing practices. Improved interchangeability can be provided at a higher cost. Sensors could also be sorted using third party calibration laboratories, or your own in-house calibrator, to ensure greater accuracy for each sensor installation (controller/sensor combination). Calibration is also useful when two sensors are attached to the same controller, since sensors that match can be selected. Regardless, the tolerances shown are the extreme, as required for engineering calculations. Most sensors are well within the Interchangeability Tolerance shown below.

Our temperature controllers are designed for "end point stability." Generally, for any given set point, control can be matched from controller to controller by making minor adjustments to the set point. With our PC compatible controllers, there is usually an Input Offset feature that can be used to make minor adjustments to the temperature being reported by the sensor.

Base Resistance at 25°C is 200,000 Ohms.

 
 

Interchangeability Tolerance and Accuracy

Note that the tolerance specifications of the sensor do not affect end point temperature control and temperature stability. They affect the accuracy of the temperature being "reported" by the sensor when using a PC compatible temperature controller, or a temperature controller with a front panel display. Our controllers are designed for excellent end point temperature control, but they are not meant to be calibration grade instruments (which are far more expensive). To improve the accuracy of the temperature reported by any of the sensors listed below, calibrate the sensor/controller combination to an in-house or third party standard. If you have a question about the thermistor tolerance specifications as related to your requirements, or about calibration, please  . There are many calibration techniques and tools.

Interchangeability Tolerance and Accuracy:
Warning: We do not recommend exposing the Teflon leads to temperatures greater than 200°C.
 
 
200K
TX1A SERIES THERMISTORS
200KOhm@25°C | 200000 Ohms@25°C | Based on FENWALL CURVE 16 | Similar to "J" Curve
Downloadable as CSV text file (right-click to download): TX1AResTemp200000.csv
TEMPERATURE vs RESISTANCE TABLE
°C Ohms °C Ohms °C Ohms °C Ohms °C Ohms
30 157781 66 34396 102 9564 138 3311 174 1347
31 150619 67 33089 103 9258 139 3223 175 1317
32 143825 68 31838 104 8964 140 3137 176 1287
33 137379 69 30641 105 8684 141 3055 177 1258
34 131261 70 29493 106 8414 142 2975 178 1229
35 125452 71 28396 107 8155 143 2897 179 1201
36 119934 72 27343 108 7903 144 2821 180 1174
37 114691 73 26335 109 7666 145 2749 181 1149
38 109710 74 25369 110 7429 146 2678 182 1123
39 104974 75 24441 111 7204 147 2609 183 1099
40 100471 76 23554 112 6986 148 2542 184 1074
41 96187 77 22703 113 6777 149 2478 185 1051
42 92111 78 21887 114 6574 150 2415 186 1027
43 88231 79 21102 115 6380 151 2354 187 1005
44 84538 80 20351 116 6191 152 2295 188 984
45 81021 81 19630 117 6009 153 2237 189 963
46 77671 82 18938 118 5832 154 2181 190 942
47 74478 83 18272 119 5663 155 2128 191 922
48 71436 84 17634 120 5498 156 2075 192 902
49 66534 85 17021 121 5339 157 2025 193 883
50 65778 86 16431 122 5185 158 1974 194 864
51 63064 87 15866 123 5037 159 1927 195 846
52 60474 88 15322 124 4894 160 1880 196 828
53 58003 89 14800 125 4756 161 1834 197 811
54 55646 90 14296 126 4621 162 1790 198 794
55 53395 91 13815 127 4491 163 1747 199 778
56 51248 92 13349 128 4366 164 1705 200 761
57 49198 93 12902 129 4244 165 1665 201 746
58 47240 94 12472 130 4127 166 1626 202 730
59 45370 95 12058 131 4012 167 1587 203 716
60 43583 96 11660 132 3902 168 1550 204 701
61 41876 97 11277 133 3796 169 1514 205 687
62 40243 98 10909 134 3693 170 1478 210 621
63 38682 99 10552 135 3593 171 1445
64 37190 100 10211 136 3496 172 1411
65 35762 101 9881 137 3402 173 1379