Mitsubishi Electric QUHZ-W40VA, Руководство по обслуживанию

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GHH15010
19
500
400
300
200
100
0
40 20 0
60 80 100 120
Resistance (k
ȍ
)
Temperature (°C)
0
50
60
70
80
90
40
30
20
10
100
110
120
130
140
150
-20 -30 -10 0 10 20 30 40 50 60
Resistance (k
ȍ
)
Temperature (°C)
7-5. HOW TO CHECK THE COMPONENTS
<Thermistor feature chart>
Low temperature thermistors
‡
Thermistor <Defrost> (TH2)
Thermistor R0 = 33.18
Nȍ
± 2%
B constant = 3900 ± 3%
R
t
=33.18exp{3900(
273+t
–
273
)}
1
Thermistor R100 =
Nȍ
± 2%
B constant = 4014 ± 2%
R
t
=13.36exp{4014(
273+t
–
373
)}
1
1
High temperature thermistors
‡
Thermistor <Discharge> (TH1)
‡
Thermistor <Hot water> (TH4)
1
0
°C
33
Nȍ
10
°C
20
Nȍ
20
°C
13
Nȍ
25
°C
10
Nȍ
30
°C
8.0
Nȍ
40
°C
5.3
Nȍ
20
°C
250
Nȍ
30
°C
161
Nȍ
40
°C
107
Nȍ
50
°C
72
Nȍ
60
°C
50
Nȍ
70
°C
35
Nȍ
80
°C
25
Nȍ
90
°C
18
Nȍ
100
°C
13
Nȍ
110
°C
9.9
Nȍ