Outdoor Air Temperature sensor
24 Carrier Sensors
Thermistor Resistance vs. Temperature Values for Outdoor Air
Temperature Sensor
10K Type II (CP/MCI)
-40
-31
-22
-13
-4
5
14
23
32
41
50
59
68
77
86
95
104
113
122
131
140
149
158
-40
-35
-30
-25
-20
-15
-10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
335,651
242,195
176,683
130,243
96,974
72,895
55,298
42,315
32,651
25,395
19.903
15,714
12,494
10,000
8,056
6,530
5,325
4,367
3,601
2,985
2,487
2,082
1,752
Wiring specifications
Cable from sensor to controller: If <100 ft (30.5 meters) 22 AWG, unshielded
If >100 ft (30.5 meters) 22 AWG, shielded
Maximum length: 500 feet (152 meters)
Mounting location
For applications with an economizer, mount the sensor immediately upstream from the outdoor air damper
where it will accurately sense the temperature of the outdoor air entering the mixing box.
For applications without an economizer, mount the sensor in the outdoor air duct near the outdoor air intake
or on the northern exterior of the building.
Do not mount the sensor:
• In direct sunlight
• Near the exhaust from air-handling units or compressors
• Near leakage drafts of indoor air
• Near shrubbery or trees
• Under direct water runoff