Design and function
2017-05-22 / DIS 113_58300000186503_ara_en_c
Copyright by BSH Hausgeräte GmbH
Page 29 of 85
3.18
NTC
3.18.1
Structure
Fig. 26:
Components of the NTC
1
Electrical connection
3
Semi-conductor resistor
2
Connecting cables
4
Housing
The NTC is an electrical component. The housing (4) encloses the semi-conductor
resistor (1) and the connecting cables (2). Semi-conductor resistor and housing
touch each other.
The electrical connection (1) of the NTC is designed as a plug or socket.
3.18.2
Function
NTC resistors are conductive materials with a negative temperature coefficient
(
N
egative
T
emperature
C
oefficient =
NTC
). As the temperature rises, the electrical
resistance of the NTC drops.
Fig. 27:
The function of the NTC
The NTC converts the temperature in the detergent solution to electrical resistance.
The electronics evaluate the resistance of the NTC and actuate a switching
process if the setpoint temperature of the detergent solution is exceeded or drops
below the minimum.
3.18.3
Work area
The operating range is 0–99 °C
Measured values see circuit diagrams