Effect of temperature on LVDT displacement sensors – Turck

Create Date: 2024-8-30 12:03:23|Source: TURCK/TURCK

LVDT displacement sensor has a very high measurement accuracy, mainly used for accurate measurement of displacement and position in use, so do you know what is the influence of temperature on LVDT displacement sensor?

Effect of temperature on LVDT displacement sensors – Turck

Effect of temperature on LVDT displacement sensors – Turck

Effect of temperature change on the output signal

Temperature changes can affect the LVDT's output signal in two different ways, including mechanical expansion and changes in the LVDT's electrical characteristics. Mechanical expansion results in relative motion between the LVDT core and the LVDT windings. The final effect is to send a faulty core motion signal, resulting in zero migration faults. Temperature may also alter the primary input current of the LVDT or the magnetism of the core data, which can affect the electrical characteristics of the LVDT. This can lead to a change in the share factor or a trip offset error.

Effect of temperature on LVDT data

The effect of temperature change on magnetic function is negligible, as is the impact of LVDT core data and transformer operation within the normal operating temperature range. In order to counteract the influence of the thermal expansion coefficient of the LVDT data, the LVDT is structurally symmetrically extended from the center to both ends. The new production skills and materials also enable LVDTs to operate in harsh environments, including pole high temperatures and low temperatures. Custom LVDTs can be designed to operate at temperatures up to 400°F. The high temperature rating is achieved by welding with a special high melting point using specially made data and linear displacement sensors.

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