29
0
10
20
30
40
50
-20 -10
0
10 20 30 40 50
< Thermistor for lower temperature >
Temperature (
:
)
Resistance (K
"
)
<Thermistor Characteristic graph>
•Room temperature thermistor(TH1)
•Pipe temperature thermistor/liquid(TH2)
•Condenser/Evaporator temperature
thermistor(TH5)
Thermistor R
0
=15k
'
± 3%
Fixed number of B=3480 ± 2%
Rt=15exp { 3480( ) }
0
:
15k
'
10
:
9.6k
'
20
:
6.3k
'
25
:
5.2k
'
30
:
4.3k
'
40
:
3.0k
'
Thermistor for
lower temperature
1
273+t
1
273
HWE1007B.qx 6/2/15 4:27 PM Page 29
