AAON RSMZ User Manual

35
RSMZ Technical Guide
Sensor Voltage and Resistance
The following sensor voltage and resistance table is provided to
aid in checking sensors that appear to be operating incorrectly.
See Table 8, this page. Many system operating problems can be
traced to incorrect sensor wiring. Be sure all sensors are wired
per the wiring diagrams in this manual.
If the sensors still do not appear to be operating or reading
correctly, check voltage and/or resistance to conrm that the
sensor is operating correctly per the tables. Please follow the
notes and instructions that appear after the chart when checking
sensors.
APPENDIX A: TROUBLESHOOTING
Temperature Sensor Testing
Table 8: 0-5V Temperature Sensor - Voltage and Resistance for Type III Sensors
Temp
(°F)
Temp
(°C)
Resistance
(Ohms)
Voltage @
Input (VDC)
72 22.2 11136 2.695
73 22.8 10878 2.665
74 23.3 10625 2.635
75 23.9 10398 2.607
76 24.4 10158 2.577
78 25.6 9711 2.520
80 26.7 9302 2.465
82 27.8 8893 2.407
84 28.9 8514 2.352
86 30 8153 2.297
88 31.1 7805 2.242
90 32.2 7472 2.187
95 35 6716 2.055
100 37.8 6047 1.927
105 40.6 5453 1.805
110 43.3 4923 1.687
115 46.1 4449 1.575
120 48.9 4030 1.469
125 51.7 3656 1.369
130 54.4 3317 1.274
135 57.2 3015 1.185
140 60 2743 1.101
145 62.7 2502 1.024
150 65.6 2288 0.952
Temp
(°F)
Temp
(°C)
Resistance
(Ohms)
Voltage @
Input (VDC)
-10 -23.3 93333 4.620
-5 -20.6 80531 4.550
0 -17.8 69822 4.474
5 -15 60552 4.390
10 -12.2 52500 4.297
15 -9.4 45902 4.200
20 -6.6 40147 4.095
25 -3.9 35165 3.982
30 -1.1 30805 3.862
35 1.7 27140 3.737
40 4.4 23874 3.605
45 7.2 21094 3.470
50 10 18655 3.330
52 11.1 17799 3.275
54 12.2 16956 3.217
56 13.3 16164 3.160
58 14.4 15385 3.100
60 15.6 14681 3.042
62 16.7 14014 2.985
64 17.8 13382 2.927
66 18.9 12758 2.867
68 20 12191 2.810
69 20.6 11906 2.780
70 21.1 11652 2.752
71 21.7 11379 2.722
Temperature to Resistance/Voltage Chart
Note: If the voltage is above 5.08 VDC the sensor or wiring is “open.” If the voltage is less than 0.05 VDC, the sensor or wiring is shorted.

AAON RSMZ Specifications

General

Brand	AAON
Model	RSMZ
Category	Control Unit
Language	English