Garland EFW800, Руководство по обслуживанию

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Part # 4521056 Rev 2(02/21/12) Page 10
SENSOR DATA
The sensor used on the model is an NTC (negative
temperature coeffi
cient) thermistor. This is a sensor whose
resistance decreases with an increase in temperature.
The sensing circuit is arranged as a voltage divider circuit
shown below. The data chart shows the thermistor resistance
out of the circuit, in the circuit and voltage measured at the
input if the circuit is energized versus temperature.
I8
I6, - 1 2V
R 1
R2
VR 1
C 1
22uf
1 0k
temperature
sense
11 k, 1%
+1 2VDC
c omputer
interna l
resistan c e
76k ohm
t
20k 1%
Temperature - Resistance/Voltage Table
Temperature - Resistance/Voltage
Temperature Resistance
Out Of
Circuit
In-Circuit
Resistance
Voltage
In Circuit
(I8 to -)
°C °F
150 302 187.2 185.01 0.20
145 293 210.3 207.54 0.22
140 284 236.9 233.41 0.25
135 275 267.5 263.06 0.28
Temperature - Resistance/Voltage
Temperature Resistance
Out Of
Circuit
In-Circuit
Resistance
Voltage
In Circuit
(I8 to -)
°C °F
130 266 303.0 297.31 0.32
125 257 344.2 336.88 0.36
120 248 392.2 382.72 0.40
115 239 448.3 435.96 0.46
110 230 514.1 497.93 0.52
105 221 591.6 570.29 0.59
100 212 683.1 654.85 0.67
95 203 791.6 753.91 0.77
90 194 920.9 870.28 0.88
85 185 1075 1006.65 1.01
80 176 1261 1167.98 1.15
75 167 1485 1357.67 1.32
70 158 1756 1580.69 1.51
65 149 2087 1843.95 1.72
63 145 2256 1974.84 1.83
60 140 2491 2152.37 1.96
55 131 2989 2514.34 2.23
50 122 3604 2935.76 2.53
45 113 4369 3424.15 2.85
40 104 5326 3985.40 3.19
35 95 6530 4623.27 3.55
30 86 8056 5339.34 3.92
25 77 10000 6129.03 4.29
20 68 12500 6985.29 4.66
15 59 15720 7888.23 5.01
10 50 19920 8821.56 5.34
5 41 25440 9759.33 5.64
0 32 32740 10672.18 5.91
-5 23 42470 11533.50 6.14
-10 14 55580 12322.86 6.34
-15 5 73390 13023.59 6.51
-20 -4 97820 13627.55 6.64
-25 -13 131700 14134.09 6.75