The temperature sensor of the electric water heater is broken. Is there any other influence besides temperature?

1 has other effects. According to the control mode of electric water heater and the working principle of temperature sensor, we can know that the temperature sensor is broken, which will cause the electric water heater to be in a heating state all the time.

2. The temperature sensor in the electric water heater is mainly used to detect the water temperature. When the water temperature reaches the set temperature, the power supply of the heating pipe is cut off by the control circuit.

3. The water temperature in the inner container of the electric water heater is transmitted to the temperature display through the sensor to display the water temperature, and the water temperature in the inner container of the electric water heater is transmitted to the temperature regulator through the sensor.

When it reaches the temperature you adjust, it will automatically stop boiling water. If there is no temperature sensor, the electric water heater will keep heating and will continue to burn when it is boiled.

Second, the use of temperature sensor matters needing attention:

1, whether the temperature of the measured object needs recording, alarm and automatic control, and whether it needs long-distance measurement and transmission;

2, the size of the temperature range and accuracy requirements;

3, the temperature measuring element size is appropriate;

4. When the temperature of the measured object changes with time, whether the lag of the temperature measuring element can meet the requirements of temperature measurement;

5. Whether the environmental conditions of the measured object are harmful to the temperature measuring element;

6. If the price is guaranteed, is it convenient to use?

Extended data:

I. Working principle of temperature sensor of electric water heater:

1, the metal will extend correspondingly when the ambient temperature changes, so the sensor can convert the signal of this reaction in different ways.

2. Bimetal is composed of two pieces of metal with different expansion coefficients stuck together. With the change of temperature, the expansion degree of material A is higher than that of another metal, which leads to the bending of metal sheet. The curvature of the bend can be converted into an output signal.

3. With the increase of temperature, the length of metal tube (material A) increases, but the length of unexpanded steel bar (metal B) does not increase, so that the linear expansion of metal tube can be transferred due to the change of position. In turn, this linear expansion can be converted into an output signal.

When the temperature changes, the volumes of liquid and gas will change accordingly.

5. Various types of structures can convert this expansion change into position change, thus producing position change output (potentiometer, induced deviation, baffle, etc.). ).

Two, the temperature control mode of electric water heater is divided into:

1, mechanical control electric water heater: The main component of temperature control of mechanical electric water heater is mechanical control electric water heater. A temperature controller with mechanical knob adjustment usually consists of a temperature probe, an adjustable driving mechanism and a pair of electrical contacts.

2. When the temperature at the probe rises, the medium (liquid or gas) in the probe expands, and the driving mechanism is pushed by the capillary to make the electric contact act. The working temperature of the electric contact can be adjusted by the adjustable driving mechanism, or the electric contact can be kept in a normally open state.

3. The main features of the thermostat for mechanical water heaters are: the working temperature can be continuously adjusted within a certain range, the operation is simple and convenient, and the price is low. Suitable for ordinary families. The disadvantage is that the temperature control mode is single, and only one mode of circulating heating can be realized.

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