Thermal Solutions APEX APX425C Installation, Operating And Service Instructions page 130

12
Troubleshooting
Table 12-11: Outdoor Sensor
Temperature vs. Resistance,
10kOhm NTC, Beta = 3435K
Outdoor Temperature
°F
-20 -28.9
-10 -23.3
0 -17.8
10 -12.2
20
30
40
50 10.0
60 15.6
70 21.1
76 24.4
78 25.6
80 26.7
90 32.2
100 37.8
110 43.3
120 48.9
130
(continued)
Ohms of
Resistance
°C
106926
80485
61246
47092
-6.7 36519
-1.1 28558
4.4 22537
17926
14356
11578
10210
9795
9398
7672
6301
5203
4317
APEX Installation, Operating, & Service Instructions
Table 12-12: Header Sensor
Temperature vs. Resistance,
10kOhm NTC, Beta = 3950K
Temperature
°F
32
50
68
77
86
104
122
140
158
176
194
212 100
248 120
Ohms of
Resistance
°C
0 32648
10 19898
20 12492
25 10000
30 8057
40 5327
50 3602
60 2488
70 1752
80 1256
90 916
697
386
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