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Bimetallic thermometers combine two metals with different linear expansion coefficients, one end is fixed, and when the temperature changes, the thermal expansion of the two metals is different, driving the pointer to deflect to indicate the temperature, which is the bimetallic sheet thermometer, as shown in the figure on the above page. The temperature measurement range is -80~500C, which is suitable for temperature measurement when the accuracy requirement is not high in industry. As a kind of temperature sensing element, bimetal can also be used for automatic temperature control.
| Nominal diameter of dial | 100 |
| Accuracy class | (1.0), 1.5 |
| Thermal response time | ≤ 40S |
| Protection grade | IP55 |
| Normal working atmospheric conditions | temperature - 25~+55 ℃, relative humidity ≤ 85% |
| Set point error | The set point error should not exceed 1.5 times the basic error limit. |
| Switching error | The switching error should not exceed 1.5 times the basic error limit. |
| Switching repeatability | The switching repeatability limit range is not greater than 1/2 of the basic error limit. |
According to the connection direction of the bimetal thermometer dial and the protective tube, the bimetal thermometer can be divided into four types: axial type, radial type, 135° type and universal type.
① Axial bimetal thermometer: the dial is connected to the protective tube vertically.
(2) Radial bimetal thermometer: the dial is connected with the protective tube in parallel.
(3) 135° directional bimetal thermometer: the dial is connected to the protection tube at 135°.
④ Universal bimetal thermometer: the Angle of connection between the dial and the protective tube can be adjusted arbitrarily.
Bimetallic thermometers combine two metals with different linear expansion coefficients, one end is fixed, and when the temperature changes, the thermal expansion of the two metals is different, driving the pointer to deflect to indicate the temperature, which is the bimetallic sheet thermometer, as shown in the figure on the above page. The temperature measurement range is -80~500C, which is suitable for temperature measurement when the accuracy requirement is not high in industry. As a kind of temperature sensing element, bimetal can also be used for automatic temperature control.
| Nominal diameter of dial | 100 |
| Accuracy class | (1.0), 1.5 |
| Thermal response time | ≤ 40S |
| Protection grade | IP55 |
| Normal working atmospheric conditions | temperature - 25~+55 ℃, relative humidity ≤ 85% |
| Set point error | The set point error should not exceed 1.5 times the basic error limit. |
| Switching error | The switching error should not exceed 1.5 times the basic error limit. |
| Switching repeatability | The switching repeatability limit range is not greater than 1/2 of the basic error limit. |
According to the connection direction of the bimetal thermometer dial and the protective tube, the bimetal thermometer can be divided into four types: axial type, radial type, 135° type and universal type.
① Axial bimetal thermometer: the dial is connected to the protective tube vertically.
(2) Radial bimetal thermometer: the dial is connected with the protective tube in parallel.
(3) 135° directional bimetal thermometer: the dial is connected to the protection tube at 135°.
④ Universal bimetal thermometer: the Angle of connection between the dial and the protective tube can be adjusted arbitrarily.
