Linear displacement sensors are often affected by temperature drift. Temperature drift is the change in the sensor output signal as the ambient temperature changes. It may cause errors in the measurement results of the sensor and affect the accuracy and stability of the measurement.

Taking the commonly used HL-6-300-15 sensor as an example, we introduce some influence and countermeasures on temperature drift of displacement sensor:

• Sensor sensitivity change: temperature change may cause the sensor HL-6-300-15 sensitivity to change, that is, the sensor’s response to displacement changes with temperature change. This causes the amplitude of the sensor output signal to change when measuring the same displacement at different temperatures.
• Offset and drift: The temperature change may also cause the offset and drift of the lvdt sensor output signal. Offset is the constant difference between the sensor output signal and the reference value at different temperatures. Drift is the change of the sensor output signal with time at the same temperature. These effects can lead to inaccuracies and instabilities in the measurement results.
• Temperature compensation: In order to reduce the impact of temperature drift on the LVDT displacement sensor HL-6-300-15, the temperature compensation technology is often used. Temperature compensation is a method that measures the ambient temperature and corrects the sensor output signal using a compensation algorithm. The compensation algorithm can build a model according to the temperature characteristics of the sensor to compensate the impact of temperature on the output of the postion sensor, so as to improve the accuracy and stability of the measurement.
• Temperature stabilization: Another way to reduce the effect of temperature drift is to stabilize the temperature of the position sensor HL-6-300-15 and the measurement environment. By controlling the ambient temperature or using temperature stabilization equipment, the effect of temperature changes on the sensor can be reduced, thus reducing the temperature drift error.

It should be noted that different types of linear displacement sensors have different sensitivity to temperature drift and temperature characteristics. In actual application, the impact of temperature drift shall be evaluated according to the specific sensor specifications and application requirements, and corresponding compensation or stabilization measures shall be taken to ensure the accuracy of the measurement results.