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Sensors - LG RCWW-1 Operation & Maintenance Manual

Water-cooled screw r134a
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n Sensors
Negative Temperature Coefficient
Negative Temperature Coefficient is used to check the cold water inlet temperature, cold water outlet tempera-
ture, coolant water inlet temperature, coolant water outlet temperature and compressor discharge temperature.
◆ Cold water inlet temperature Sensor
◆ Cold water outlet temperature Sensor
◆ Coolant water inlet temperature Sensor
◆ Coolant water outlet temperature Sensor
◆ Compressor discharge temperature Sensor
The resistance of the measured temperature is as follows.
Temperature (℃) Resistance (kΩ ) Temperature (℃) Resistance (kΩ ) Temperature (℃) Resistance (kΩ ) Temperature (℃) Resistance (kΩ )
-40
235.83
-39
221.67
-38
208.47
-37
196.16
-36
184.67
-35
173.94
-34
163.92
-33
154.55
-32
145.79
-31
137.59
-30
129.91
-29
122.72
-28
115.98
-27
109.66
-26
103.74
-25
98.18
-24
92.95
-23
88.04
-22
83.43
-21
79.1
-20
75.02
-19
71.18
-18
67.57
-17
64.16
-16
60.95
-15
57.93
-14
55.07
-13
52.38
-12
49.84
-11
47.44
-10
45.17
-9
43.02
-8
40.99
-7
39.08
-6
37.27
-5
35.55
-4
33.92
-3
32.38
-2
30.92
-1
29.54
0
28.22
1
26.98
Chiller Water-cooled Screw
NTC Thermistor Temperature Vs Resistance Table
2
25.76
3
24.67
4
23.61
5
22.59
6
21.63
7
20.72
8
19.85
9
19.02
10
18.23
11
17.48
12
16.77
13
16.09
14
15.44
15
14.82
16
14.23
17
13.67
18
13.13
19
12.62
20
12.13
21
11.67
22
11.22
23
10.8
24
10.39
25
10
26
9.63
27
9.27
28
8.93
29
8.6
30
8.29
31
7.99
32
7.71
33
7.44
34
7.17
35
6.92
36
6.68
37
6.45
38
6.23
39
6.01
40
5.81
41
5.61
42
5.43
43
5.24
Table 11
- 42 -
44
5.07
45
4.9
46
4.74
47
4.59
48
4.44
49
4.3
50
4.16
51
4.03
52
3.9
53
3.78
54
3.66
55
3.55
56
3.44
57
3.33
58
3.23
59
3.13
60
3.04
61
2.95
62
2.86
63
2.78
64
2.69
65
2.61
66
2.54
67
2.47
68
2.4
69
2.33
70
2.26
71
2.2
72
2.14
73
2.08
74
2.02
75
1.96
76
1.91
77
1.86
78
1.81
79
1.76
80
1.71
81
1.67
82
1.62
83
1.58
84
1.54
85
1.5
86
1.46
87
1.42
88
1.38
89
1.35
90
1.31
91
1.28
92
1.25
93
1.22
94
1.19
95
1.16
96
1.13
97
1.1
98
1.08
99
1.05
100
1.02
101
0.99
102
0.98
103
0.95
104
0.93
105
0.91
106
0.89
107
0.87
108
0.85
109
0.83
110
0.81
111
0.79
112
0.77
113
0.76
114
0.74
115
0.72
116
0.71
117
0.69
118
0.68
119
0.66
120
0.65
121
0.63
122
0.62
123
0.61
124
0.59
125
0.58
126
0.57
127
0.56

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