Hb mini controller technical guide 21 – Orion System HB Mini User Manual
Page 21
HB Mini Controller
Technical Guide
21
Temperature – Resistance – Voltage For Type III 10 K Ohm Thermistor Sensors
Temp
(
º
F)
Resistance
(Ohms)
Voltage @
Input (VDC)
Temp
(
º
F)
Resistance
(Ohms)
Voltage @
Input (VDC)
Temp
(
º
F)
Resistance
(Ohms)
Voltage @
Input (VDC)
-10
93333
2.98
60
14681
1.96
86
8153
1.48
-5
80531
2.94
62
14014
1.93
88
7805
1.45
0
69822
2.89
64
13382
1.89
90
7472
1.41
5
60552
2.83
66
12758
1.85
95
6716
1.33
10
52500
2.77
68
12191
1.81
100
6047
1.24
15
45902
2.71
69
11906
1.79
105
5453
1.16
20
40147
2.64
70
11652
1.78
110
4923
1.09
25
35165
2.57
71
11379
1.76
115
4449
1.02
30
30805
2.49
72
11136
1.74
120
4030
0.95
35
27140
2.41
73
10878
1.72
125
3656
0.88
40
23874
2.33
74
10625
1.70
130
3317
0.82
45
21094
2.24
75
10398
1.68
135
3015
0.76
50
18655
2.15
76
10158
1.66
140
2743
0.71
52
17799
2.11
78
9711
1.63
145
2502
0.66
54
16956
2.08
80
9302
1.59
150
2288
0.61
56
16164
2.04
82
8893
1.55
58
15385
2.00
84
8514
1.52
Thermistor Sensor Testing Instructions
1.) Use the resistance column to check the thermistor sensor while disconnected from the controllers (not powered).
2.) Use the voltage column to check sensors while connected to powered controllers. Read voltage with meter set on DC volts. Place
the “-”(minus) lead on GND terminal and the “+”(plus) lead on the sensor input terminal being investigated.
If the voltage is above 3.3 VDC, then the sensor or wiring is “open.” If the voltage is less than 0.05 VDC, the sensor or wiring is shorted.
Table 8: Temperature Sensor - Voltage & Resistance for Type III Sensors