Turbidity Sensor (High Power Sensor) - Electrolux ComfortLift ESF8735ROX Service Manual

3.11.

Turbidity sensor (High power sensor)

Control both the temperature and the turbidity of
the washing water.
Positioned externally on the sump in direct contact
with the water.
Fitted with an NTC sensor for control of the
temperature.
Fitted with an infra-red system for control of the
turbidity of the water (i.e. the quantity of dirt in the
water).
Constantly transmits the two signals to the
electronic control system for processing.
By correctly combining the signals received from the
two sensors (NTC and turbidity), enables the
appliance to perform "automatic" washing cycles
which automatically optimize the washing cycle
according to the type of load, the quantity of the load
and the degree of soiling.
The light is collected by a new technology and
guides the light into the measurement zone.
- Use of larger LEDs
• the light area increases from 3 to 20sqmm
• small dirt pieces cannot block the light
beam anymore
- LEDs are located in a colder area
- less temperature fluctuations around
the LED's
- higher precision during measurement
- improved signal stability
- measurement during higher pump speed
is possible.
OLD
1- Dirt pieces
3- Constant 23°C measured, because
LEDs are outside the hot water area
18/60
NEW
1
4
2- Temperature between 15-70°C in
water
4- The temperature sensitive electronical
components are out of the water
zone, where the temperature is colder
and more constant
2
3