Order number: 900350.011
V2.70
Seite 11
Fryer design features
The special features in the design of the deep-fryer must be taken into account. The temperature
measurement value depends on the thermal coupling of the sensor to the oil or heating system. If the thermal
coupling disappears with little oil, then the temperature also increases slowly or not at all.
Sensor
Gas burner
Electric heating
Electric heating
A
B
C
D
Sensor
Sensor
The illustrations show different constructions and thermal coupling to the sensor
Oil shortage or missing oil
Sensor
Gas burner
Elektric heating
Electric heating
A
B
C
D
Sensor
Sensor
The illustrations show the conditions in case of lack of oil or missing oil.
Temperature behavior of the different designs
Example A:
If there is so little oil present that the sensor is no longer immersed in oil, it measures approximately the air
temperature instead of the oil temperature and hardly changes the measured value during heating.
The lack of oil then becomes noticeable as too little temperature rise.
Example B:
In design B, a mixing temperature can occur because the sensor has thermal contact with the oil and the tank
wall.
The temperature at the sensor rises when the oil heats up, or when heat is transferred to the sensor via the
tank wall through heat conduction.
