Trane RTWA 70-125 TON - Manual (Page 18)

18 RLC-SVD03A-EN
Temperature Sensor Checkout
1. Overall accuracy for the sensor is at least + 2 F 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.
Table 4 Sensor Conversion Data: Saturated Condenser and Entering Oil Temperature Matched Pairs
(6RT12, 3B1RT1; 6RT13, 4B1RT2)
Actual
Temp.
(F) Actual
Resistance
(Ohms) Thermistor
Voltage
(Volts DC) Actual
Temp.
(F) Actual
Resistance
(Ohms) Thermistor
Voltage
(Volts DC) Actual
Temp.
(F) Actual
Resistance
(Ohms) Thermistor
Voltage
(Volts DC)
0.0 87510.3 4.651 50.0 19955.0 3.765 100.0 5824.3 2.356
1.0 84745.9 4.641 51.0 19427.9 3.740 101.0 5694.2 2.327
2.0 82072.1 4.630 52.0 18916.5 3.715 102.0 5567.4 2.300
3.0 79500.1 4.619 53.0 18420.3 3.689 103.0 5443.8 2.272
4.0 77012.3 4.608 54.0 17938.8 3.664 104.0 5323.3 2.244
5.0 74609.7 4.596 55.0 17471.6 3.638 105.0 5205.9 2.217
6.0 72288.8 4.584 56.0 17018.0 3.611 106.0 5091.5 2.189
7.0 70047.4 4.572 57.0 16577.8 3.585 107.0 4979.9 2.162
8.0 67881.9 4.560 58.0 16150.5 3.558 108.0 4871.1 2.135
9.0 65790.2 4.547 59.0 15735.7 3.531 109.0 4765.0 2.108
10.0 63768.7 4.534 60.0 15332.9 3.504 110.0 4661.5 2.082
11.0 61815.3 4.521 61.0 14941.7 3.477 111.0 4560.6 2.055
12.0 59927.8 4.507 62.0 14561.9 3.450 112.0 4462.2 2.029
13.0 58103.1 4.494 63.0 14193.0 3.422 113.0 4366.3 2.003
14.0 56339.6 4.479 64.0 13834.6 3.394 114.0 4272.6 1.977
15.0 54634.7 4.465 65.0 13486.5 3.366 115.0 4181.3 1.951
16.0 52986.4 4.450 66.0 13148.3 3.338 116.0 4092.2 1.926
17.0 51392.6 4.435 67.0 12819.8 3.310 117.0 4005.3 1.901
18.0 49851.6 4.420 68.0 12500.5 3.282 118.0 3920.5 1.876
19.0 48360.9 4.404 69.0 12190.2 3.253 119.0 3837.7 1.851
20.0 46919.2 4.388 70.0 11888.7 3.225 120.0 3756.9 1.826
21.0 45524.6 4.372 71.0 11595.6 3.196 121.0 3678.1 1.802
22.0 44175.6 4.355 72.0 11310.7 3.167 122.0 3601.1 1.777
23.0 42870.3 4.338 73.0 11033.7 3.139 123.0 3526.5 1.754
24.0 41607.6 4.321 74.0 10764.4 3.110 124.0 3453.6 1.730
25.0 40385.3 4.303 75.0 10502.6 3.081 125.0 3382.4 1.707
26.0 39202.7 4.285 76.0 10248.0 3.051 126.0 3313.0 1.684
27.0 38057.9 4.266 77.0 10000.0 3.022 127.0 3245.1 1.661
28.0 36950.0 4.248 78.0 9759.6 2.993 128.0 3178.9 1.638
29.0 35877.4 4.229 79.0 9525.4 2.964 129.0 3114.2 1.615
30.0 34838.9 4.209 80.0 9297.5 2.935 130.0 3051.0 1.593
31.0 33833.3 4.190 81.0 9075.9 2.905 131.0 2989.2 1.571
32.0 32861.4 4.170 82.0 8860.2 2.876 132.0 2928.9 1.549
33.0 31935.3 4.150 83.0 8650.4 2.847 133.0 2870.0 1.528
34.0 31038.7 4.130 84.0 8446.2 2.817 134.0 2812.4 1.506
35.0 30170.5 4.109 85.0 8247.5 2.788 135.0 2756.2 1.485
36.0 29329.5 4.088 86.0 8054.1 2.759 136.0 2701.2 1.464
37.0 28515.0 4.067 87.0 7865.8 2.730 137.0 2647.5 1.444
38.0 27725.9 4.045 88.0 7682.5 2.700 138.0 2595.0 1.423
39.0 26961.4 4.024 89.0 7504.2 2.671 139.0 2543.7 1.403
40.0 26220.8 4.002 90.0 7330.5 2.642 140.0 2493.6 1.383
41.0 25503.0 3.979 91.0 7161.4 2.613 141.0 2444.6 1.364
42.0 24807.5 3.957 92.0 6996.7 2.584 142.0 2396.7 1.344
43.0 24133.3 3.934 93.0 6836.3 2.555 143.0 2349.9 1.325
44.0 23479.7 3.910 94.0 6680.1 2.526 144.0 2304.1 1.306
45.0 22846.1 3.887 95.0 6528.0 2.498 145.0 2259.2 1.287
46.0 22231.9 3.863 96.0 6379.8 2.469 146.0 2216.0 1.269
47.0 21636.2 3.839 97.0 6235.5 2.440 147.0 2172.8 1.250
48.0 21058.7 3.815 98.0 6094.8 2.412 148.0 2131.6 1.232
49.0 20498.4 3.790 99.0 5957.8 2.384 149.0 2090.4 1.215
150.0 2051.2 1.197