Trane RTHC - Page 28

Temperature Sensors
22 RTHC-SVD01B-EN
Table 3-5: Outdoor Air Temperature Sensor
Actual
Te m p.
(F)
Actual
Resistance
(Ohms)
Thermistor
Voltage
(Volts DC)
Actual
Te m p.
(F)
Actual
Resistance
(Ohms)
Thermistor
Voltage
(Volts DC)
Actual
Te m p.
(F)
Actual
Resistance
(Ohms)
Thermistor
Voltage
(Volts DC)
-10 121326 4.72 32 32862 4.11 74 10764 3.02
-9 117371 4.71 33 31936 4.09 75 10503 2.99
-8 113555 4.70 34 31039 4.07 76 10248 2.96
-7 109877 4.69 35 30171 4.05 77 10001 2.93
-6 106328 4.69 36 29330 4.03 78 9760 2.90
-5 102905 4.68 37 28515 4.01 79 9526 2.87
-4 99603 4.67 38 27726 3.98 80 9298 2.84
-3 96417 4.66 39 26962 3.96 81 9076 2.81
-2 93342 4.65 40 26221 3.94 82 8861 2.78
-1 90375 4.63 41 25503 3.92 83 8651 2.75
0 87511 4.62 42 24808 3.89 84 8446 2.72
1 84746 4.61 43 24134 3.87 85 8248 2.69
2 82078 4.60 44 23480 3.84 86 8054 2.66
3 79501 4.59 45 22846 3.82 87 7866 2.64
4 77013 4.58 46 22232 3.79 88 7683 2.61
5 74610 4.57 47 21636 3.77 89 7504 2.58
6 72289 4.55 48 21059 3.74 90 7331 2.55
7 70048 4.54 49 20499 3.72 91 7162 2.52
8 67883 4.53 50 19955 3.69 92 6997 2.49
9 65790 4.51 51 19428 3.67 93 6837 2.46
10 63769 4.50 52 18917 3.64 94 6680 2.43
11 61816 4.49 53 18420 3.61 95 6528 2.40
12 59928 4.47 54 17939 3.59 96 6380 2.37
13 58104 4.46 55 17472 3.56 97 6236 2.35
14 56340 4.44 56 17018 3.53 98 6095 2.32
15 54635 4.43 57 16578 3.51 99 5958 2.29
16 52987 4.41 58 16151 3.48 100 5824 2.26
17 51393 4.39 59 15736 3.45 101 5694 2.23
18 49852 4.38 60 15333 3.42 102 5568 2.21
19 48361 4.36 61 14942 3.39 103 5444 2.18
20 46920 4.34 62 14562 3.37 104 5324 2.15
21 45525 4.33 63 14193 3.34 105 5206 2.12
22 44176 4.31 64 13835 3.31 106 5092 2.10
23 42871 4.29 65 13487 3.28 107 4980 2.07
24 41608 4.27 66 13149 3.25 108 4871 2.04
25 40386 4.25 67 12820 3.22 109 4765 2.02
26 39203 4.24 68 12501 3.19 110 4662 1.99
27 38058 4.22 69 12190 3.17 111 4561 1.97
28 36951 4.20 70 11889 3.14 112 4462 1.94
29 35877 4.18 71 11596 3.11 113 4366 1.91
30 34839 4.16 72 11311 3.08 114 4273 1.89
31 33834 4.14 73 11034 3.05 115 4181 1.86
Notes:
1. Overall accuracy for the sensor is at least +1 over the range shown.
2. As you compare a thermistor resistance (or input voltage) reading with the “actual” temperature indicated by the
thermometer, be sure to consider the location and precision of the thermometer when you decide whether or not the
thermistor is out of specified accuracy.
3. The thermistor resistances given do not account for the self-heating effects that are present when connected to the UCM.
A connected “operating” thermistor will read a slightly lower (less than 1%) resistance.