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Temperature Sensor

Temperature Sensor

Product introduction: Based on the principle of metal expansion, the metal of the sensor will have a corresponding extension after the environmental temperature changes, so the sensor can signal this reaction in different ways. The bimetallic sensor bimetal plate consists of two expansion coefficients

Product Details

product description:

Sensor based on the principle of metal expansion

Metal will have a corresponding extension after the ambient temperature changes, so the sensor can signal this response in different ways.

Bimetal sensor

The bimetal plate consists of two pieces of metal with different expansion coefficients glued together. As the temperature changes, the expansion of material a is higher than that of other metals, causing the metal plate to bend. The curvature of the bend can be converted into an output signal.

Bimetal rod tube sensor

As the temperature increases, the length of the metal tube (material a) increases, but the length of the non-expandable steel rod (metal b) does not increase, so the linear expansion of the metal tube can be shifted with the change of position. In turn, this linear expansion can be converted into an output signal.

Design of Liquid-Gas Deformation Curve Sensor

When the temperature changes, the volume of liquid and gas will also change.

Various types of structures can convert this expansion change into a position change, thereby generating a position change output (potentiometer, induced deviation, baffle, etc.).

Resistance sensing

As the temperature changes, the resistance of the metal also changes.

For different metals, when the temperature changes by one degree, the resistance value changes differently, and the resistance value can be directly used as the output signal.

Features:

1. Whether the temperature of the measured object needs to be recorded,

2. The size and accuracy requirements of the temperature measurement range;

3. Whether the size of the temperature measuring element is appropriate;

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

5. Whether the environmental conditions of the measured object damage the temperature measuring element;

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

Matters needing attention in product selection:

1. Whether the temperature of the measured object needs to be recorded, alarmed and automatically controlled, and whether it needs to be remotely measured and transmitted;

2. The size and accuracy requirements of the temperature measurement range;

3. Whether the size of the temperature measuring element is appropriate;

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

5. Whether the environmental conditions of the test product damage the temperature measuring element;


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