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Precision Refrigerator temperature sensing probe Manufacturer

Product Item: Precision Refrigerator temperature sensing probe Manufacturer
Category: NTC Sensor
The temperature sensor known as the temperature probe. In the home appliance control, it is generally used as a sensing element that senses the temperature of a specific part, and converts the temperature signal into an electrical signal to control the system to operate in a prescribed mode. The temperature sensors used in the refrigerator industry are mainly direct-heated negative temperature coefficient (NTC) thermistors: That is, in the working range, the thermistor whose resistance value decreases as the temperature of its resistor body increases.

  • PRODUCT DETAIL
The temperature sensor known as the temperature probe. In the home appliance control, it is generally used as a sensing element that senses the temperature of a specific part, and converts the temperature signal into an electrical signal to control the system to operate in a prescribed mode. The temperature sensors used in the refrigerator industry are mainly direct-heated negative temperature coefficient (NTC) thermistors: That is, in the working range, the thermistor whose resistance value decreases as the temperature of its resistor body increases.

Precautions for using the temperature probe:
In order to feel the accuracy of the temperature point, each temperature sensor must be fixedly installed in the corresponding position. In particular, the temperature probe of each evaporator must be closely attached to the evaporator and in good contact with the evaporator. The sensing line and the temperature sensor must be sealed intact, without damage or cracking, to avoid parameter drift caused by moisture intrusion.



The first sensor: Next to the second tube of the evaporator in the refrigerator;
The second sensor: Inside the hinged lid on the door;
The third sensor: On the right side of the inner shelf of the upper shelf of the fruit and vegetable box in the refrigerator;
The fourth sensor: Beside the refrigeration tube behind the second drawer of the freezer;
5th sensor: Inside the soft freezer evaporator.


The main function of the refrigerator sensor:
1. Variable temperature zone sensor: Temperature sensor for displaying the temperature and control of the changing greenhouse.
2. Refrigerator evaporator sensor: Temperature sensor for controlling the temperature of the refrigerator compartment.
3. Defrost sensor: The temperature sensor is generally disconnected at normal temperature, closed below -7 ° C, and the defrosting heater is energized to generate heat and defrost the evaporator.
4. The refrigerator operation sensor is used to observe whether the compressor is running.
5. The compressor protection sensor is used to protect the compressor.
6. There is a sensor for the refrigerator door. When the refrigerator door is opened, the light inside the refrigerator is turned on, the refrigerator door closed light is turned off, and so on.


model  Rated resistance value(R25) B value Operating temperature Dissipation factor(mW/℃) Thermal time constant(S)
resistance value
(KΩ)
Tolerance
(± %)
Nominal value
(K)
MF53-102-3950 1 ±1%
±2%
±3%
±5%
3950 -40℃
~
+300℃
≥2.0
Still air
≤15
Still air
MF53-202-3435 2 3435
MF53-472-3950 4.7 3950
MF53-502-3470 5 3470
MF53-502-3950 5 3950
MF53-682-3950 6.8 3950
MF53-103-3435 10 3435
MF53-103-3470 10 3470
MF53-103-3600 10 3600
MF53-103-3950 10 3950
MF53-103-3977 10 3977
MF53-103-4100 10 4100
MF53-153-3950 15 3950
MF53-203-3950 20 3950
MF53-233-3950 23 3950
MF53-303-3950 30 3950
MF53-333-3950 33 3950
MF53-40.27-3950 40.27 3950
MF53-473-3950 47 3950
MF53-493.12-3950 49.12 3950
MF53-503-3950 50 3950
MF53-503-3990 50 3990
MF53-503-4050 50 4050
MF53-104-3950 100 3950
MF53-104-3990 100 3990
MF53-104-4200 100 4050
MF53-204-3950 200 3950    
MF53-204-4260 200 4260    
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